[olug] SSD & linux

[Rob Townley]

On Mon, Feb 25, 2013 at 2:10 PM, Rob Townley <rob.townley at gmail.com> wrote:
> On Mon, Feb 25, 2013 at 1:30 PM, Obi-Wan <obiwan at jedi.com> wrote:
>>> Also set swappiness=5 since I got 32G ram and mounted /tmp and /var/logs into RAM so they get deleted on every reboot or shutdown.
>>
>> The sysadmin in me shrieks in terror at the thought of /var/logs getting
>> wiped at ever reboot.
>
> i like those details, CentOS 6 can not use the 'discard' trim option
> because it is only at 2.6.32, but 'discard' requires 2.6.35.  Then
> again, i should check the --changelog to see if it was backported.
>
> rsyslog is already comes preinstalled in most distributions so logging
> does not have to wear out your ssd.
> Alternatively, is their room to add a spinning platters hdd for logging.


hmmm, my KDE Trash can was empty, but running fstrim found
 fstrim --verbose /
/: 25667268608 bytes were trimmed

More hmmm, discard destroys performance with some vendors.  Wonder who
is vendor2 and vendor3?
http://people.redhat.com/lczerner/discard/ext4_discard.html