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Groups > comp.lang.c++ > #67441

Re: Performance of unaligned memory-accesses

From David Brown <david.brown@hesbynett.no>
Newsgroups comp.lang.c++
Subject Re: Performance of unaligned memory-accesses
Date 2019-08-08 15:53 +0200
Organization A noiseless patient Spider
Message-ID <qih9ft$9v1$1@dont-email.me> (permalink)
References (6 earlier) <slrnqkmasn.1th.ccollins476ad@pseudoephedrine.nightmare-heaven.no-ip.biz> <qifbmh$edd$1@dont-email.me> <bLH2F.488756$YG3.461935@fx16.am4> <qign4s$bqv$1@dont-email.me> <RSU2F.718$QR4.98@fx01.am4>

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On 08/08/2019 14:48, Bart wrote:
> On 08/08/2019 09:39, David Brown wrote:
>> On 07/08/2019 23:52, Bart wrote:
> 
>> I don't see much connection between struct sizes and what we have
>> discussing, but I will try to answer anyway.
> 
> I was picking up on the suggestion to just let a compiler get on with
> its job. I'm saying that for things like this it will still need to be
> checked, and if necessary to tweak a struct to get a more satisfactory
> result.
> 

Struct size and padding follows strict rules - it is not something that
varies between compilers (for the same target ABI), by versions or by
options.  If you know the rules, the results are always predictable.
(Of course they can still be hard to check manually if the struct is big
or the member types are complicated).

Occasionally you will want to tweak a struct for better results.  For
example, if it is of size 60 bytes, you might want to add a 4-byte dummy
entry so that it is 64 bytes giving more efficient use in an array
(especially when you arrange for it to have the same alignment as a
cache line).  But that sort of thing is not very common.

> That can include deliberately using some misalignment although usually
> you will try and avoid that.

I don't imagine there is much use for deliberate misalignment.  But
sometimes additional alignment (typically to cache line size) can be
helpful.

> 
>> Compilers will add padding in structs to keep alignments correct for the
>> fields.  The alignment for the struct itself will be that of the largest
>> alignment of any field, and there will be padding at the end of the
>> struct if needed to make the whole thing a multiple of this alignment
>> (so that arrays of the struct work).
>>
>> So you won't get a struct array that has a stride of 65 bytes unless the
>> struct itself has size 65 bytes.
> 
> The size might be 65 or more than 65, neither ideal if you were hoping
> for 64.

True.  But the size and padding follows set rules, which allows you to
re-arrange fields to minimise padding.

> 
> (If I'm generating C, then I'd use pack(1) since the source language
> does not do automatic padding, and then a size of 65 is possible for any
> mix of element types. Although that would usually be picked up in the
> original language before I start generating C versions.)

I think if you want to translate directly from your source language into
C concepts, you should make your source language match the C rules here.

> 
>> As for checking the size of structs, compilers might be able to give you
>> help such as gcc's "-Wpadded" warning that is issued if there is any
>> padding added to structs.  Most people don't want such a warning, of
>> course, but I have sometimes found it useful.
>>
>> The best method of checking struct sizes IMHO is with C11 static
>> assertions:
>>
>> _Static_assert(sizeof(struct X) == 65, "Struct X should be 65 bytes");
> 
> I would just use printf("size = %<whatever>\n",sizeof(struct X)) while
> creating it. Just to ensure it is some sane value.
> 

IMHO, it is a lot better to have a compile-time assertion that is always
checked whenever the code is compiled, than a run-time check that you
confirm manually when you remember to include it and when you remember
to look at it.  Printing the size of the struct can be handy if the
static assertion fails and you can't immediately see why - the static
assertion will tell you the struct is not 65 bytes, but it won't tell
you what it actually is.


>> But there are several ways
>> to avoid that in gcc:
>>
>> 1. Enable optimisation.  That will coalesce the byte-at-a-time accesses
>> on targets that support unaligned accesses.
> 
> On that specific example (that would have been on gcc 4.x on RPi in
> 2012), it was optimised, and the ARM32 processor /was/ capable of
> unaligned access, but gcc still generated byte-at-a-time code).
> 

It's hard to guess details from that description.  But it is fair to say
the "enable optimisation" has no guarantees - gcc can spot common
patterns and optimise them, but not all possible patterns.  And results
can vary by compiler version and target, with improvements for each
generation.  "gcc 4.x" could be nearly 15 years old, or just 5 years old.

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Thread

Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 07:13 +0200
  Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-06 23:20 -0700
    Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 08:57 +0200
      Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 00:22 -0700
        Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 09:26 +0200
          Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 00:33 -0700
            Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 09:52 +0200
              Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 13:37 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 08:06 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 08:14 +0200
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson " <ahh_f_it@crap.nothing> - 2019-08-08 00:00 -0700
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson " <ahh_f_it@crap.nothing> - 2019-08-07 23:59 -0700
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2019-08-17 22:13 -0700
          Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 00:35 -0700
          Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 14:47 +0000
            Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 16:55 +0200
              Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 15:11 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 17:41 +0200
                Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 15:58 +0000
      Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 00:24 -0700
        Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 10:07 +0200
          Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 20:55 -0700
            Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 08:03 +0200
              Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 23:54 -0700
    Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 08:57 +0200
      Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 22:42 -0700
    Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 14:46 +0000
      Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 14:09 -0700
  Re: Performance of unaligned memory-accesses Paavo Helde <myfirstname@osa.pri.ee> - 2019-08-07 11:00 +0300
    Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 10:03 +0200
      Re: Performance of unaligned memory-accesses Paavo Helde <myfirstname@osa.pri.ee> - 2019-08-07 11:46 +0300
    Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 11:19 +0200
      Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 13:13 +0200
        Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 13:29 +0200
          Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 14:02 +0200
            Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 14:08 +0200
              Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 15:57 +0200
  Re: Performance of unaligned memory-accesses Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-08-07 12:37 +0000
    Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 14:47 +0200
      Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 16:18 +0200
        Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 16:53 +0200
          Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 17:30 +0200
            Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 17:39 +0200
              Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 18:12 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 18:33 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 21:32 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 22:01 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 22:48 +0200
                Re: Performance of unaligned memory-accesses Chris Vine <chris@cvine--nospam--.freeserve.co.uk> - 2019-08-07 23:02 +0100
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 07:43 +0200
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 22:54 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 08:04 +0200
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-08 00:16 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 09:58 +0200
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-08 01:20 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 16:47 +0200
                Re: Performance of unaligned memory-accesses Chris Vine <chris@cvine--nospam--.freeserve.co.uk> - 2019-08-08 10:29 +0100
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 16:50 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 17:05 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 17:33 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 09:56 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 16:51 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 17:10 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 17:35 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 17:38 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 21:45 +0200
                Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-08 20:00 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 06:52 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 07:59 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-09 09:19 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 09:32 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-09 10:14 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 10:21 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-09 13:01 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 13:09 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-09 15:38 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 15:45 +0200
                Re: Performance of unaligned memory-accesses Robert Wessel <robertwessel2@yahoo.com> - 2019-08-09 09:37 -0500
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 16:59 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 17:04 +0200
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-09 16:43 +0100
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 19:18 +0200
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-09 23:28 +0100
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-10 08:55 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-10 17:21 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-10 17:25 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-10 23:32 +0200
                Re: Performance of unaligned memory-accesses Ian Collins <ian-news@hotmail.com> - 2019-08-11 10:59 +1200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 02:24 +0200
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-10 17:53 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 17:26 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 19:18 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 23:00 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 23:44 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 23:46 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-12 01:02 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 09:15 +0200
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@example.com> - 2019-08-11 16:37 -0700
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@example.com> - 2019-08-11 16:42 -0700
                Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@example.com> - 2019-08-11 22:05 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 07:25 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 07:24 +0200
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-10 17:22 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 07:23 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-10 17:10 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-10 17:21 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-10 17:31 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-10 23:47 +0200
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-10 17:40 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 07:27 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-10 23:46 +0200
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-10 23:22 +0100
                Re: Performance of unaligned memory-accesses James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-10 16:11 -0700
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-10 17:32 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 15:41 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 15:55 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 18:06 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 18:15 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 18:59 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 19:03 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 23:48 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 00:15 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-12 01:06 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 09:13 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-12 13:32 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 13:40 +0200
                Re: Performance of unaligned memory-accesses Melzzzzz <Melzzzzz@zzzzz.com> - 2019-08-12 11:44 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 14:30 +0200
                Re: Performance of unaligned memory-accesses Melzzzzz <Melzzzzz@zzzzz.com> - 2019-08-12 13:09 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 15:14 +0200
                Re: Performance of unaligned memory-accesses Melzzzzz <Melzzzzz@zzzzz.com> - 2019-08-12 19:13 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 21:15 +0200
                Re: Performance of unaligned memory-accesses Melzzzzz <Melzzzzz@zzzzz.com> - 2019-08-12 19:25 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-13 02:28 +0200
                Re: Performance of unaligned memory-accesses Melzzzzz <Melzzzzz@zzzzz.com> - 2019-08-13 01:08 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-13 16:03 +0200
                Re: Performance of unaligned memory-accesses Tim Rentsch <tr.17687@z991.linuxsc.com> - 2019-08-14 09:27 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-14 20:51 +0200
                Re: Performance of unaligned memory-accesses Öö Tiib <ootiib@hot.ee> - 2019-08-14 13:14 -0700
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-14 15:04 -0700
                Re: Performance of unaligned memory-accesses Öö Tiib <ootiib@hot.ee> - 2019-08-14 15:47 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-15 10:15 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-15 07:11 +0200
                Re: Performance of unaligned memory-accesses Öö Tiib <ootiib@hot.ee> - 2019-08-14 23:37 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-15 09:25 +0200
                Re: Performance of unaligned memory-accesses Öö Tiib <ootiib@hot.ee> - 2019-08-15 03:41 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-15 14:25 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-15 16:06 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-15 16:21 +0200
                Re: Performance of unaligned memory-accesses Tim Rentsch <tr.17687@z991.linuxsc.com> - 2019-08-15 16:56 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-16 06:44 +0200
                Re: Performance of unaligned memory-accesses James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-14 16:53 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 18:40 +0200
                Re: Performance of unaligned memory-accesses Ralf Goertz <me@myprovider.invalid> - 2019-08-13 08:53 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-13 09:18 +0200
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-11 19:00 +0100
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 21:06 +0200
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-11 13:07 -0700
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-11 23:58 +0100
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-11 17:07 -0700
                Re: Performance of unaligned memory-accesses Chris Vine <chris@cvine--nospam--.freeserve.co.uk> - 2019-08-12 10:14 +0100
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 11:30 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 13:03 +0200
                Re: Performance of unaligned memory-accesses Chris Vine <chris@cvine--nospam--.freeserve.co.uk> - 2019-08-12 13:06 +0100
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-12 10:34 +0100
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-12 08:49 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 18:10 +0200
                Re: Performance of unaligned memory-accesses Öö Tiib <ootiib@hot.ee> - 2019-08-12 09:22 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-12 18:24 +0200
                Re: Performance of unaligned memory-accesses James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-12 16:38 -0700
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-12 09:33 -0700
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-11 13:11 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 23:59 +0200
                Re: Performance of unaligned memory-accesses James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-10 19:31 -0400
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-11 15:52 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-11 07:28 +0200
                Re: Performance of unaligned memory-accesses James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-08-10 16:37 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-09 21:35 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 21:43 +0200
                Re: Performance of unaligned memory-accesses Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-08-08 12:51 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 16:55 +0200
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 16:57 +0200
            Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 16:07 +0000
              Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 18:38 +0200
                Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 17:34 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 20:07 +0200
                Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 20:16 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 22:42 +0200
                Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-07 21:19 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 23:40 +0200
              Re: Performance of unaligned memory-accesses Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-08-07 19:58 +0000
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-07 22:08 +0200
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 22:13 +0200
                Re: Performance of unaligned memory-accesses Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-08-21 20:26 +0000
            Re: Performance of unaligned memory-accesses Christopher Collins <ccollins476ad@gmail.com> - 2019-08-07 12:50 -0700
              Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-07 22:18 +0200
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-07 22:52 +0100
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-07 17:52 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 10:39 +0200
                Re: Performance of unaligned memory-accesses Bart <bc@freeuk.com> - 2019-08-08 13:48 +0100
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 15:53 +0200
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-07 17:27 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 10:43 +0200
                Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-08 13:33 -0700
                Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 23:34 +0200
                Re: Performance of unaligned memory-accesses Christopher Collins <ccollins476ad@gmail.com> - 2019-08-07 17:28 -0700
                Re: Performance of unaligned memory-accesses Bonita Montero <Bonita.Montero@gmail.com> - 2019-08-08 09:30 +0200
            Re: Performance of unaligned memory-accesses "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-08-07 14:20 -0700
            Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-07 17:27 -0700
              Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 11:39 +0200
        Re: Performance of unaligned memory-accesses Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-08-07 19:48 +0000
        Re: Performance of unaligned memory-accesses Keith Thompson <kst-u@mib.org> - 2019-08-07 15:51 -0700
          Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 12:51 +0200
            Re: Performance of unaligned memory-accesses scott@slp53.sl.home (Scott Lurndal) - 2019-08-08 14:46 +0000
              Re: Performance of unaligned memory-accesses David Brown <david.brown@hesbynett.no> - 2019-08-08 17:14 +0200

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