9.0 on SSD
wblock at wonkity.com
Thu May 31 12:57:20 UTC 2012
On Thu, 31 May 2012, Victor Sudakov wrote:
> I have installed 9.0-RELEASE on a SSD drive with the following
> tweaking so far:
> 1. tmpmfs="YES" (WRKDIRPREFIX etc will go there too).
> 2. mount -o noatime
> 3. tunefs -t enable
> I have not done any tricky partition alignment, do I really need to? Is
> anything else advisable?
If it's not aligned, there can be a pretty significant performance
drop. Please show the output of 'gpart show' on that drive if it's GPT
(gpart show ada0) or drive and slice if it's MBR/bsdlabel (gpart show
ada0 && gpart show ada0s1).
> There is one thing that worries me, why is TRIM not shown as enabled in
> camcontrol output?
> [root at vas ~] tunefs -p /dev/ada0p2 | & grep -i trim
> tunefs: trim: (-t) enabled
> [root at vas ~] camcontrol identify ada0 | egrep '^Fea|TRIM'
> Feature Support Enabled Value Vendor
> data set management (TRIM) yes
> [root at vas ~]
I think that no value there means it cannot be enabled or disabled; it's
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