Re: Full SSD support?

From	jnh@VictorTangoEleven.net.invalid (Jordan)
Newsgroups	comp.os.linux.hardware
Subject	Re: Full SSD support?
Date	2011-11-27 00:08 +0000
Organization	A noiseless patient Spider
Message-ID	<jarv2o$luo$1@dont-email.me> (permalink)
References	<of2dnXOLeMEMWFjTnZ2dnUVZ_oOdnZ2d@earthlink.com> <y4OdnfUdopWKb1XTnZ2dnUVZ_sSdnZ2d@earthlink.com> <jal014$ij5$1@dont-email.me> <kIWdnao6nYjZl1PTnZ2dnUVZ8oGdnZ2d@lyse.net>

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In article <kIWdnao6nYjZl1PTnZ2dnUVZ8oGdnZ2d@lyse.net>,
David Brown  <david@westcontrol.removethisbit.com> wrote:
>On 24/11/2011 09:42, Jordan wrote:
>>
>> It's also possible to convert an existing ext3 filesystem to ext4.
>>
>
>It is better to make it ext4 in the first place.  As well as being 
>faster to create (ext4 delays creation of inode tables), it is easier to 
>ensure that you are using newer ext4 features such as extents.  Even if 
>they are enabled after the conversion, files that were on the system 
>while it is ext3 will not suddenly start using extents once you change 
>to ext4.

Good points.

>> If you have a large amount of RAM, you might want to consider
>> running without swap (create the partition, but only swapon when
>> you need it, for huge complies, etc.), and use a tmpfs RAMdisk for
>> things like browser caches.  Or put these on a standard HD if one
>> is present.
>
>Just make the swap like normal, and enable it like normal.  If it's not 
>needed, it won't be used - and if it /is/ needed, it /will/ be used. 
>Why make things more awkward for yourself by having to manually enable 
>it when you need it?

The only reason I do this on my main workstation is that the swap
partition lives on a mechanical HD, which is normally kept spun
down to save power/heat and maintain zero noise whenever possible
(this is a fanless system also).

>If you have a small or medium amount of RAM (these things are all 
>relative), then the system may choose to push applications into swap 
>even if it has enough ram, if it thinks the ram is better used as cache 
>space.  Usually, the system is correct.  But if you are seeing this and 
>you want to avoid it (perhaps you are using an older SSD), you can 
>adjust the swapiness parameter rather than manually enabling and 
>disabling the swap.

True enough.


-- 
Jordan.

Thread

Full SSD support? ANTant@zimage.com (Ant) - 2011-11-17 20:40 -0600
  Re: Full SSD support? Fredrik Jonson <fredrik@jonson.org> - 2011-11-18 06:31 +0000
    Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-18 03:45 -0800
      Re: Full SSD support? David Brown <david@westcontrol.removethisbit.com> - 2011-11-18 14:19 +0100
        Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-18 05:46 -0800
        Re: Full SSD support? jnh@VictorTangoEleven.net.invalid (Jordan) - 2011-11-20 03:14 +0000
          Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-20 04:26 -0800
            Re: Full SSD support? Richard Kettlewell <rjk@greenend.org.uk> - 2011-11-20 12:41 +0000
              Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-20 04:55 -0800
            Re: Full SSD support? jnh@VictorTangoEleven.net.invalid (Jordan) - 2011-11-24 08:42 +0000
              Re: Full SSD support? jnh@VictorTangoEleven.net.invalid (Jordan) - 2011-11-24 08:48 +0000
                Re: Full SSD support? Richard Kettlewell <rjk@greenend.org.uk> - 2011-11-24 09:18 +0000
                Re: Full SSD support? David Brown <david@westcontrol.removethisbit.com> - 2011-11-24 11:43 +0100
                Re: Full SSD support? Richard Kettlewell <rjk@greenend.org.uk> - 2011-11-24 11:21 +0000
                Re: Full SSD support? David Brown <david@westcontrol.removethisbit.com> - 2011-11-24 13:57 +0100
                Re: Full SSD support? Richard Kettlewell <rjk@greenend.org.uk> - 2011-11-24 13:20 +0000
              Re: Full SSD support? David Brown <david@westcontrol.removethisbit.com> - 2011-11-24 10:04 +0100
                Re: Full SSD support? jnh@VictorTangoEleven.net.invalid (Jordan) - 2011-11-27 00:08 +0000
                Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-26 17:57 -0800
                Re: Full SSD support? David Brown <david@westcontrol.removethisbit.com> - 2011-11-28 09:34 +0100
              Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-24 02:26 -0800
                Re: Full SSD support? jnh@VictorTangoEleven.net.invalid (Jordan) - 2011-11-27 00:12 +0000
                Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-26 17:58 -0800
                Re: Full SSD support? David Brown <david@westcontrol.removethisbit.com> - 2011-11-28 09:42 +0100
                Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-28 07:14 -0800
                Re: Full SSD support? David Brown <david@westcontrol.removethisbit.com> - 2011-11-29 09:09 +0100
                Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-29 02:27 -0800
                Re: Full SSD support? David Brown <david@westcontrol.removethisbit.com> - 2011-11-29 12:43 +0100
                Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-29 05:45 -0800
    Re: Full SSD support? Andreas Dehmel <blackhole.8.zarquon42@spamgourmet.com> - 2011-11-20 14:54 +0100
      Re: Full SSD support? Richard Kettlewell <rjk@greenend.org.uk> - 2011-11-20 19:06 +0000
  Re: Full SSD support? 7 <email_at_www_at_enemygadgets_dot_com@enemygadgets.com> - 2011-11-20 01:20 +0000
    Re: Full SSD support? jnh@VictorTangoEleven.net.invalid (Jordan) - 2011-11-20 03:20 +0000
    Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-20 04:27 -0800
  Re: Full SSD support? chris <chrisdhaag@googlemail.com> - 2011-11-20 17:12 +0100
    Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-20 08:54 -0800
      Re: Full SSD support? David Brown <david.brown@removethis.hesbynett.no> - 2011-11-20 19:32 +0100
        Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-20 11:02 -0800
          Re: Full SSD support? David Brown <david.brown@removethis.hesbynett.no> - 2011-11-20 22:02 +0100
            Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-20 14:03 -0800
              Re: Full SSD support? David Brown <david@westcontrol.removethisbit.com> - 2011-11-21 10:12 +0100
                Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-21 01:38 -0800
            Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-23 23:27 -0800
            Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-24 22:07 -0800
              Re: Full SSD support? david <none@nospam.com> - 2011-11-25 12:30 +0000
                Re: Full SSD support? Ant <ant@zimage.comANT> - 2011-11-25 07:00 -0800
        Re: Full SSD support? André Gillibert <MetaEntropy.removeThis@gmail.com> - 2011-11-22 00:56 +0100

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