Groups > comp.sys.ibm.pc.hardware.storage > #2435

Re: IDE or AHCI ?

Date	2012-01-20 06:54 -0500
From	Yousuf Khan <bbbl67@spammenot.yahoo.com>
Newsgroups	comp.sys.ibm.pc.hardware.storage
Subject	Re: IDE or AHCI ?
References	(5 earlier) <5YadnVh378gqYJjSnZ2dnUVZ8uadnZ2d@giganews.com> <9mnuc4FgnkU2@mid.individual.net> <4f0b176a$1@news.bnb-lp.com> <v4ydnRCjkoUEo5bSnZ2dnUVZ7vidnZ2d@lyse.net> <9n2lsdFiuuU1@mid.individual.net>
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On 10/01/2012 6:31 AM, Arno wrote:
> David Brown<david.brown@removethis.hesbynett.no>  wrote:
>> On 09/01/12 17:35, Yousuf Khan wrote:
>>> On 06/01/2012 4:48 AM, Arno wrote:
>>>> Yousuf Khan<bbbl67@spammenot.yahoo.com>  wrote:
>>>>> On 1/4/2012 3:41 PM, Rod Speed wrote:
>>>>>> Yousuf Khan wrote
>>>>>>> David Brown wrote
>>>> [...]
>>>>>>> I monitor the disk subsection of the Resource Monitor regularly,
>>>>>>> and very often when the disk is busy the Disk Queue
>>>>>>> Length is over 1.00 (meaning more than 1 process is actively
>>>>>>> waiting on the disk) and the Active Time is pegged near
>>>>>>> 100%.
>>>>>>
>>>>>> Doesnt mean that NCQ doesnt help in that situaiton.
>>>>
>>>>> When I'm talking about the disk queue being higher than 1.00, I don't
>>>>> mean just something minor like 1.01, or 1.10, but I'm talking about
>>>>> 5.00, or even 10.00! There could be 10 process waiting on the disk queue
>>>>> at any given time. This normally happens during boot-up time, but it
>>>>> doesn't take very long for the disk queue to kick up to the stratosphere
>>>>> at any time. Just a few apps trying to access the same disk at the same
>>>>> time, and you got major delays.
>>>>
>>>>> Yousuf Khan
>>>>
>>>> Seems tsomething was done here in 3.2 and moire maybe done in
>>>> the near future. Although from an article on LWN, its seems
>>>> the curent FS people have trouble understanding some of the
>>>> proposals made.
>>>>
>>>> Arno
>>>
>>> I'm sorry, I didn't understand a word you said, what are you talking about?
>>>
>>> Yousuf Khan
>
>> It made some sense to me - maybe this key will help:
>
>> Translation of the abbreviations:
>
>> "3.2" = Linux kernel version 3.2
>> "LWM" = Linux Weekly News (a website)
>> "FS" = Filesystem
>
> All correct.

Ah! Okay, I understand it now. BTW, my measurements were referring to 
Windows 7 here, not Linux. I actually don't have much of an issue with 
Linux using the same hardware, everything runs very fast. I just wish I 
could do more of my work in Linux, but I'm somewhat dependent on Windows 
apps in many cases. My Linux usage mainly consists of light-duty web 
surfing, which is fine, but I can't leave it in Linux most of the time 
simply for web surfing alone; in Windows, I can get the web surfing done 
and other work too.

>> I couldn't figure out which article Arno was referring to - maybe we
>> could have a link?
>
> Sure: http://lwn.net/Articles/456904/
>
> Arno

Oh interesting, so some cutting edge algorithms are being proposed for 
the Linux kernel to avoid overloading the disk queues. So has this 
Fengguang Wu's rejigged i/o patchset been implemented into Linux kernel 
3.2 full time now?

	Yousuf Khan

Thread

IDE or AHCI ? Lynn McGuire <lmc@winsim.com> - 2012-01-03 12:30 -0600
  Re: IDE or AHCI ? Arno <me@privacy.net> - 2012-01-03 21:05 +0000
    Re: IDE or AHCI ? "arno fucker" <af@arnofucker.com> - 2012-01-04 12:41 +1100
  Re: IDE or AHCI ? "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-01-04 12:58 +1100
  Re: IDE or AHCI ? Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2012-01-04 00:07 -0500
    Re: IDE or AHCI ? David Brown <david@westcontrol.removethisbit.com> - 2012-01-04 08:53 +0100
      Re: IDE or AHCI ? "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-01-04 20:32 +1100
        Re: IDE or AHCI ? David Brown <david@westcontrol.removethisbit.com> - 2012-01-04 14:44 +0100
          Re: IDE or AHCI ? "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-01-05 07:37 +1100
            Re: IDE or AHCI ? David Brown <david.brown@removethis.hesbynett.no> - 2012-01-04 22:56 +0100
              Re: IDE or AHCI ? "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-01-05 09:48 +1100
              Re: IDE or AHCI ? Ed Light <nobody@nobody.there> - 2012-01-04 21:40 -0800
              Re: IDE or AHCI ? Mike Tomlinson <mike@jasper.org.uk> - 2012-01-05 05:37 +0000
                Re: IDE or AHCI ? "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-01-05 17:37 +1100
      Re: IDE or AHCI ? Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2012-01-04 09:29 -0500
        Re: IDE or AHCI ? David Brown <david@westcontrol.removethisbit.com> - 2012-01-04 16:04 +0100
          Re: IDE or AHCI ? Arno <me@privacy.net> - 2012-01-04 19:19 +0000
            Re: IDE or AHCI ? David Brown <david.brown@removethis.hesbynett.no> - 2012-01-04 23:14 +0100
              Re: IDE or AHCI ? Arno <me@privacy.net> - 2012-01-05 08:47 +0000
          Re: IDE or AHCI ? "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-01-05 07:51 +1100
        Re: IDE or AHCI ? Arno <me@privacy.net> - 2012-01-04 19:16 +0000
        Re: IDE or AHCI ? "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-01-05 07:41 +1100
          Re: IDE or AHCI ? Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2012-01-05 14:44 -0500
            Re: IDE or AHCI ? "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-01-06 17:35 +1100
              Re: IDE or AHCI ? Krypsis <krypsis@optusnet.com.au> - 2012-01-07 00:05 +1100
                Re: IDE or AHCI ? Arno <me@privacy.net> - 2012-01-06 20:04 +0000
                Re: IDE or AHCI ? Mike Tomlinson <mike@jasper.org.uk> - 2012-01-06 21:13 +0000
                Re: IDE or AHCI ? cjt <cheljuba@prodigy.net> - 2012-01-06 20:42 -0600
                Re: IDE or AHCI ? David Brown <david.brown@removethis.hesbynett.no> - 2012-01-07 13:48 +0100
                Re: IDE or AHCI ? Arno <me@privacy.net> - 2012-01-07 14:09 +0000
                Re: IDE or AHCI ? Mike Tomlinson <mike@jasper.org.uk> - 2012-01-07 14:36 +0000
                Re: IDE or AHCI ? Krypsis <krypsis@optusnet.com.au> - 2012-01-08 02:11 +1100
                Re: IDE or AHCI ? Mike Tomlinson <mike@jasper.org.uk> - 2012-01-09 12:06 +0000
                Re: IDE or AHCI ? Arno <me@privacy.net> - 2012-01-09 16:27 +0000
                Re: IDE or AHCI ? Mike Tomlinson <mike@jasper.org.uk> - 2012-01-09 17:36 +0000
                Re: IDE or AHCI ? Mike Tomlinson <mike@jasper.org.uk> - 2012-01-09 17:41 +0000
                Re: IDE or AHCI ? Winniethepooh@100acrewoods.net (GMAN) - 2012-01-09 19:07 +0000
                Re: IDE or AHCI ? David Brown <david.brown@removethis.hesbynett.no> - 2012-01-09 20:12 +0100
                Re: IDE or AHCI ? Mike Tomlinson <mike@jasper.org.uk> - 2012-01-09 21:00 +0000
                Re: IDE or AHCI ? Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2012-01-09 11:31 -0500
                Re: IDE or AHCI ? David Brown <david.brown@removethis.hesbynett.no> - 2012-01-07 17:10 +0100
                Re: IDE or AHCI ? Mike Tomlinson <mike@jasper.org.uk> - 2012-01-10 14:18 +0000
                Re: IDE or AHCI ? Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2012-01-09 11:23 -0500
                Re: IDE or AHCI ? Arno <me@privacy.net> - 2012-01-09 16:30 +0000
                Re: IDE or AHCI ? David Brown <david.brown@removethis.hesbynett.no> - 2012-01-09 20:16 +0100
                Re: IDE or AHCI ? cjt <cheljuba@prodigy.net> - 2012-01-09 17:13 -0600
                Re: IDE or AHCI ? "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-01-07 08:11 +1100
                Re: IDE or AHCI ? Krypsis <krypsis@optusnet.com.au> - 2012-01-08 01:23 +1100
                Re: IDE or AHCI ? "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-01-08 06:43 +1100
                Re: IDE or AHCI ? JW <none@dev.null> - 2012-01-09 05:23 -0500
              Re: IDE or AHCI ? Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2012-01-09 10:24 -0500
                Re: IDE or AHCI ? "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-01-10 09:34 +1100
                Re: IDE or AHCI ? Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2012-01-09 20:04 -0500
                Re: IDE or AHCI ? "Rod Speed" <rod.speed.aaa@gmail.com> - 2012-01-10 15:33 +1100
            Re: IDE or AHCI ? Arno <me@privacy.net> - 2012-01-06 09:48 +0000
              Re: IDE or AHCI ? Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2012-01-09 11:35 -0500
                Re: IDE or AHCI ? David Brown <david.brown@removethis.hesbynett.no> - 2012-01-09 20:23 +0100
                Re: IDE or AHCI ? Arno <me@privacy.net> - 2012-01-10 11:31 +0000
                Re: IDE or AHCI ? Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2012-01-20 06:54 -0500
      Re: IDE or AHCI ? Arno <me@privacy.net> - 2012-01-04 19:14 +0000

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