Re: Is squid unable to handle the load?

From: Douglas Rinckes - SolNet Technologies - Sun NZ ISO <>
Date: Wed, 27 May 1998 12:04:40 +1200 (NZST)

+ > As you can see when the disk operations / second go above 100 (12th
+ > column), the CPU idle time goes 100% (last column), which basically means
+ > squid freezes...
+ >
+ > Correct me if I'm wrong, but that means our SCSI controller (Adaptec 2940
+ > Ultra) / disk is maxing out at 100 operations / second...

+ Are you running ultra drives? is ultra enabled? How many Commands are you
+ sending to the controller simultaneously? You can genereally tweak the
+ 2940 quite a bit, enable tag queueing, paging, ultra, etc.

Could be worth it but for a single disk 100 IOPS is about what you'd expect.

Go with the earlier advice and get a couple of disks and stripe across them.
The bottleneck shouldn't be on the controller (unless it is quite broken), so
you should be able to put the disks on the same controller and get really good
performance increase.

Best of luck,

Doug Rinckes
Received on Tue May 26 1998 - 17:06:53 MDT

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