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Re: Severe netbsd-6 NFS server-side performance issues
At 22:55 Uhr -0700 30.5.2012, Brian Buhrow wrote:
>Another thought I had while looking at the bug report for
>Kern/46136. What if you swap to something other than the raid controller?
The machine has 4 GB of RAM, and while it runs Netatalk and Samba besides
nfsd, they're not taxed much. top(1) says
Memory: 2298M Act, 1131M Inact, 14M Wired, 25M Exec, 3384M File, 23M Free
Swap: 1024M Total, 1024M Free
> Also, I'm not sure about this, but it looks like the driver is
>multithreaded with the older raid controllers, but with the newer ones,
>it's not. I'm not sure if the one you have qualifies as old or new from
>the driver's perspective.
The controller bios is dated 2006 - I guess that qualifies as 'old'? ;)
>Christoz's comments about async disks also seems worth looking at. Any
>chance to look at the mode pages for each disk?
Not from the controller bios - the configuration interface is one of the
reasons (besides the support punting my questions) why I wouldn't buy LSI
MegaRAIDs again. You can set the interface speed per disk, but IIRC it
doesn't tell you what the disk actually negociates for.
But, as I said, you probably wouldn't see the bonnie performance from disks
"It's never straight up and down" (DEVO)
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