Re: [squid-users] Performance tunning !

Hi Joe,
Thanks for your advise. Me tested what Henrik told me to do. after that I
found the problem was from the MTU.
So before I point out another question. I tried to search the past FAQ from
squid-cache.org, Then I found the "way"
to hide this problem.
And I really got no Idea that was the "broken" way to solve the problem.
I'll try to work around with this problem.

Thanks.... :)

Regards
hwahing

At 02:02 AM 6/26/02 -0500, Joe Cooper wrote:
>Henrik has told you how to test whether MTU is at fault...It appears you
>have not even tried this simple test to confirm the source of the
>problem. Perform the test that Henrik has suggested: Configure your
>browser to use the proxy rather than using it transparently, and try to
>browse the problem sites--if it works, you almost certainly have MTU
>discovery problems. Personally, I make it a policy to try whatever Henrik
>suggests immediately--he knows more than anybody about just about
>everything (or seems to most of the time).
>
>That said, changing the maximum MTU to work around this problem isn't an
>"optimization", per se, it is simply fixing a broken aspect of your
>network that is caused by the topology and implementation. No
>optimization will fix something that is broken...In other words, your
>Squid is not too slow, your network is broken. Making Squid or your
>system faster will just make errors occur with lower latency. So stop
>looking for optimizations, and performance tuning advice and start
>figuring out how to fix what is broken! ;-)
>
>Do some reading on MTU. The simplest thing is probably to enforce a small
>enough MTU on the cache network interfaces to make the problem
>disappear...this probably isn't going to lead to the best performance
>(larger MTU leads to higher network throughput and lower load on
>equipment, all other things being equal), but it can probably fix the
>errors you're seeing.
>
>To read up on the way to set MTU:
>
>man ifconfig
>
>Ling Hwa Hing wrote:
>>Hi is there any optimization beside to disable the MTU discovery for the box?
>>Thank you very much for your help!
>>Best Regards,
>>hwahing
>> 10:34 AM 6/25/02 +0200, Henrik Nordstrom wrote:
>>
>>>If this is a transparent proxy then you are quite likely bitten by Path
>>>MTU Discovery problems between the Squid server and your clients. Try
>>>configuring the browser to use the cache. If that helps then you will
>>>need to take a crash course in path MTU discovery and why most methods
>>>for transparent redirection of port 80 breaks it to determine how to
>>>best address it in your network.
>>>
>>>Regards
>>>Henrik
>
>--
>Joe Cooper <joe@swelltech.com>
>Web caching appliances and support.
>http://www.swelltech.com

-------------------------------------
Ling Hwa Hing
High Tech ASP Sdn Bhd
Tel: 03-7803 7777
Fax: 03-7805 3111
After a number of decimal places, nobody gives a damn.
Received on Wed Jun 26 2002 - 03:59:51 MDT