[K12OSN] How to DRASTICALLY speed up app response on K12LTSP

"Terrell Prudé Jr." microman at cmosnetworks.com
Fri Oct 5 20:32:21 UTC 2007


Jim Kronebusch wrote:
> On Sat, 6 Oct 2007 08:13:08 +1200, Krsnendu dasa wrote
>   
>> Would these settings also help with edubuntu?
>>     
>
> I am trying them on my Edubuntu Feisty system right now.  I don't see any huge
> difference yet, but it has only been about 30 seconds since the change :-)
>
> How would one test the noatime options for a thin client as there does not seem to be a
> default /etc/fstab to start?  I assume there is a script to build this on boot.
>
> I added the vm changes to my /opt/ltsp/i386/etc/sysctl.conf just for the heck of it to
> see if there is any noticeable difference.
>
> So in my /etc/fstab on the server would I add noatime like so?
>
> # /etc/fstab: static file system information.
> #
> # <file system> <mount point>   <type>  <options>       <dump>  <pass>
> proc            /proc           proc    defaults,noatime        0       0
> # /dev/sda2
> UUID=94d94ee4-a692-4885-84eb-6b8060dbc4e3 /               ext3   
> defaults,noatime,errors=remount-ro 0       1
> # /dev/sda3
> UUID=e3b6ab1d-9b9b-42ba-833c-962cd6f44b4e /home           ext3    defaults,noatime     
>   0       2
> # /dev/sda1
> UUID=9e38dcdd-cadf-443e-b4a5-d78f16a592d2 none            swap    sw              0       0
> /dev/scd0       /media/cdrom0   udf,iso9660 user,noauto     0       0
> /dev/fd0        /media/floppy0  auto    rw,user,noauto  0       0
>
> Basically adding noatime after defaults on every mount, or is this only useful on / and
> /home?
>
> Jim
>
>
>   

In your case, yes, I'd see a benefit only on / and /home, because those
are the only *disk* partitions (/proc is a pseudo-filesystem).  Floppy
and CD-ROM, I wouldn't bother.

As for the thin clients, someone else just pointed out that they mount
their root filesystems R/O anyway.  Thus, it does seem logical to me to
not bother for the clients.

--TP
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