RE: [squid-users] Re: High loads on linux box running squid - tuning

Hi all,

Thanks for all the help.

I just compiled a new verison of squid (stable8) and changed to diskd.

This seems to be a bit better. I am also going to ask for more RAM to put in the server.

Thanks alot!

Kær kveðja / Best regards,
Finnur Ö. Guðmundsson
System Engineer - System Operations
fog@t.is

TM Software - Skyggnir
Holtasmári 1, IS- 201 Kópavogur, Iceland
tel: + 354 545 3000-fax + 354 545 3001
www.t.is

This e-mail message and any attachments is confidential and may be privileged. If you are not the intended recipient, please uphold strict confidentiality and neither read, copy, nor otherwise make use of the content in any way and notify sender immediately, by replying to this message or by sending an e-mail, and destroy all copies of this message and any attachments. Any non work related opinions contained in this message are those of the author and are not given or endorsed by TM Software TölvuMyndir through which this message is sent.

-----Original Message-----
From: news [mailto:news@sea.gmane.org] On Behalf Of Maik Ihde
Sent: 17. febrúar 2005 10:49
To: squid-users@squid-cache.org
Subject: [squid-users] Re: High loads on linux box running squid - tuning

Finnur Örn Guðmundsson - Skyggnir <fog <at> t.is> writes:

 
> Im running squid on HP Proliant DL360 (3.06Ghz Xeon / 1Gb ram / 2x 15K
> disks
in raid1)

We have two similar Caches. DL360G4 Models, however they have 2GB Ram and we don't use raid but have disks configured as a stripe set, since there is no data we need to protect.

> We have around 2000-2500 concurrent clients at daytimes

Well, we have less users but are running TM Viruswall on these Boxes.

> After i upgraded the box to the 3Ghz Xeon its still performing pretty
> much the
same (Loads from 0.80 to 2.00).

Squid does benefit from Memory and Disk Performace a lot, CPU is not that important. Your Machine is probably Swapping a lot? -> check that.

> cache_dir aufs /var/spool/squid 4000 16 256 (i know i do not have alot
> of
cacheing space, but this is a temp
> proxy solution)

We use diskd and have configured the cache dir Partition as ReiserFS instead of Ext3, also it is mounted with noatun,noatail.

> Is there anything i can do to quickly lower the load? How many users
> can one
put on a box like this? I have been
> google-ing alot and have seen talk about 2500-5000 on one box, not
> unlike this
one. Is this wrong?

Put more Ram into the box and I suggest to use ReiserFS and diskd. Our machines can do 50-60 req/s and CPU Load is mostly about 0.5 - and that's with the Viruswall between the Squid and the Internet which obviously costs performance.

HTH
Maik
Received on Thu Feb 17 2005 - 06:53:19 MST