Re: [squid-users] Queue congestion at 60 req/sec

From: Pablo García <malevo@dont-contact.us>
Date: Mon, 11 Jun 2007 13:51:53 -0300

Changed to COSS, it's amazing now I have

avg-cpu: %user %nice %sys %iowait %idle
           1.01 0.00 0.00 0.00 98.99

Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s
avgrq-sz avgqu-sz await svctm %util
ida/c0d0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
    0.00 0.00 0.00 0.00 0.00
ida/c0d1 0.00 0.00 0.99 0.99 15.84 7.92 7.92 3.96
   12.00 0.02 11.00 11.00 2.18

vmstat 1
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
 r b swpd free buff cache si so bi bo in cs us sy id wa
 0 0 208 14944 6124 503996 0 0 104 112 70 53 1 1 87 10
 0 0 208 14880 6124 503996 0 0 0 0 1533 362 2 1 98 0
 0 0 208 14816 6140 503980 0 0 28 1072 1442 359 1 1 93 5
 0 0 208 14816 6140 503980 0 0 0 0 1426 339 2 1 98 0
 0 0 208 14816 6140 503980 0 0 16 0 1381 316 2 1 98 1
 0 0 208 14816 6140 503980 0 0 24 0 1424 345 1 0 98 0
 0 0 208 14816 6140 503980 0 0 0 0 1430 352 2 1 98 0

BTW, the disks are in a RAID Controller, but they are configured as
separate arrays, hence there's no duplexing of the IO.

Best Regards, Pablo

On 6/11/07, squid3@treenet.co.nz <squid3@treenet.co.nz> wrote:
> > The objects being cached are 32K at most,
> > this is the busiest line of iostat -x I got
> >
> > avg-cpu: %user %nice %sys %iowait %idle
> > 2.49 0.00 1.99 22.39 73.13
> >
> > Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s
> > avgrq-sz avgqu-sz await svctm %util
> > ida/c0d0 0.00 35.64 14.85 3.96 182.18 1148.51 91.09 574.26
> > 70.74 3.89 16.32 8.68 16.34
> > ida/c0d1 0.00 58.42 36.63 10.89 435.64 570.30 217.82 285.15
> > 21.17 0.81 16.56 6.98 33.17
> >
>
> Um with names like 'ida/c0d1' would that be a RAID array? That would kind
> of explain higher IO as the RAID duplicated each store write.
>
> Amos
>
>
>
Received on Mon Jun 11 2007 - 10:52:00 MDT

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