[squid-users] Re: Server crashes

Please use the squid-users mailinglist for Squid usage and configuration
questions.

If you do not see the swap beeing used and the CPU is not fully utilized
then there most likely is a TCP/IP bottleneck.

Things to check:

  * Your cache.log to see if there is any hints
  * Your system messages file to see if there is any hints
  * TCP/IP SYN backlog size and use
  * Kernel memory usage for network buffers

Then depending on the hints found in the log files you might need to
investigate

  * Filedescriptor usage
  * TCP/IP unbound ports availability

And if no other hints are found

  * Kernel TCP/IP settings

Regards
Henrik

Monah Baki wrote:
>
> Hi,
>
> I have a sparc server running squid-2.4-stable7. Its running for an ISP
> that has 5000 users. The alteon switch is configured for 1300
> concurrent connection, the server has 3 harddisks 15K rpm and 784MB RAM
> (soon to be upgraded to 2GB RAM).
>
> In squid.conf,
> cache_mem is 96MB
> cache_swap_low 85
> cache_swap_high 100
> maximum_object_size 2048KB
>
> cache_dir ufs /cache1/cache 6000 14 256
> cache_dir ufs /cache2/cache 6000 14 256
> cache_dir ufs /cache3/cache 6000 14 256
>
> The server after 4 days of uptime, either response becomes too slow,
> which the ISP has been telling us, or the server crashes. I read FAQ
> 10.18, but wanted to make sure before I cahnged anything.
>
> Can squid handle 1300 concurrent connections or that's too high?
> If I issue top command, I see squid running at 80+%, I've never seen my
> swap being used at all.
> Memory: Real: 402M/659M act/tot Free: 218M Swap: 0K/2047M used/tot
>
> Am I doing something wrong? Could it be the OpenBSD has to be tweaked
> and not squid?
>
> Thank you for your help.
Received on Mon Nov 25 2002 - 01:03:11 MST