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Re: outside squid link overload.

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Alexey Kovrizhnykh wrote:
Hi Henrik,
 Thanks for answer.
Your method doesn't help... I do not restrict my customers anywhere on the network.

quick_abort_* and range-offset_* settings have nothing to do with access restriction in the network.

They prevent squid from pre/post-fetching more content from the Internet than clients have asked for. saving you from clients who start a downloads then abort it before finishing.

Try Henrik suggestion, its the most likely fix to bandwidth blowout.


 Traffic increases after I shift traffic through squid.
From router to Squid:
30 second input rate 1980000 bits/sec, 399 packets/sec
From Squid to router: 30 second output rate 2164000 bits/sec, 381 packets/sec

No wccp, no gre is used (if it could be headers...)
---
Alexey Kovrizhnykh
Senior IT manager

Hang on a second. What is your network topology?

 clients -> squid -> router -> internet

(expect the router web traffic to decrease by 30%-50% as squid saves bandwidth)

OR:
  clients -> router -> squid -> internet

(expect some increase as clients get traffic faster, even as internet usage decreases)

OR:

clients -> router 1 -> squid -> router 2 -> internet

(expect each router to experience one of the above scenarios)

OR:

clients -> router -> internet
           |    \
           squid >

(expect the router traffic to increase by 70%-100% as all traffic is now going through the router twice. but Internet bound traffic to decrease. inline with combining both of the first two scenarios in oen router.)


Amos


Adress: #173, St. 215 (Jawaharlal Nehru), Sangkat Phsar Doeum Kor,
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Sunday, November 30, 2008, 9:26:28 PM, you wrote:

fre 2008-11-28 klockan 17:52 +0700 skrev Alexey Kovrizhnykh:

Question: How to make Squid not to download a new part of file
"unless the old part is already loaded by the user?

Squid only buffers a small amount (16KB) plus the TCP window buffering
done by the OS.

It's hard to say exactly what is your problem without looking into the
details of the traffic you see. As others already mentioned it may be as
simple as incorrect quick_abort or range_offset_limit settings, or even
some bug in the very old version of Squid you are using.

Try the following:

quick_abort_min 0 KB
quick_abort_max 0 KB
range_offset_limit 0 KB

Regards
Henrik



--
Please be using
  Current Stable Squid 2.7.STABLE5 or 3.0.STABLE10
  Current Beta Squid 3.1.0.2

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