Re: [squid-users] cache_peer weighting

From: Tony Dodd <tony@dont-contact.us>
Date: Wed, 19 Dec 2007 06:11:05 +0000

Amos Jeffries wrote:
> Did you move to 2.6 in the process? I found that carp is accepted in 2.5
> but marked experimental and before many bugs fixes that went into 2.6.
>
> Try adding debug_options ALL,1, 39,5 to squid.conf and see what pops into
> cache.log
>

I've been running 2.6 for a while; and currently testing 2.HEAD &
3.0STABLE1 on two machines. I've dropped a bugzilla for this, along
with a patch to modify the functionality to include http_port within the
carp hashing code. It enables a squid config option of 'carp_hash_port
on/off': http://www.squid-cache.org/bugs/show_bug.cgi?id=2153

Log output previously looked like:

2007/12/19 03:05:04| carpSelectParent: 10.0.20.1 combined_hash
4266296709 score 4069969201
2007/12/19 03:05:04| carpSelectParent: 10.0.20.1 combined_hash
4266296709 score 4069969201
2007/12/19 03:05:04| carpSelectParent: 10.0.20.1 combined_hash
4266296709 score 4069969201
2007/12/19 03:05:04| carpSelectParent: 10.0.20.1 combined_hash
4266296709 score 4069969201
2007/12/19 03:05:04| carpSelectParent: 10.0.20.2 combined_hash 1829481
score 1745291
2007/12/19 03:05:04| carpSelectParent: 10.0.20.2 combined_hash 1829481
score 1745291
2007/12/19 03:05:04| carpSelectParent: 10.0.20.2 combined_hash 1829481
score 1745291
2007/12/19 03:05:04| carpSelectParent: 10.0.20.2 combined_hash 1829481
score 1745291

and

2007/12/19 03:06:57| carpSelectParent: selected 10.0.20.1
2007/12/19 03:06:57| carpSelectParent: selected 10.0.20.2
2007/12/19 03:06:57| carpSelectParent: selected 10.0.20.2
2007/12/19 03:06:57| carpSelectParent: selected 10.0.20.2
2007/12/19 03:06:57| carpSelectParent: selected 10.0.20.1
2007/12/19 03:06:58| carpSelectParent: selected 10.0.20.2
2007/12/19 03:06:58| carpSelectParent: selected 10.0.20.1
2007/12/19 03:06:58| carpSelectParent: selected 10.0.20.1
2007/12/19 03:06:59| carpSelectParent: selected 10.0.20.2
2007/12/19 03:06:59| carpSelectParent: selected 10.0.20.2

and now looks like:

2007/12/19 04:45:28| carpSelectParent: 10.0.20.1:82 combined_hash
1266692258 score 1208401297
2007/12/19 04:45:28| carpSelectParent: 10.0.20.1:81 combined_hash
1239382347 score 1182348140
2007/12/19 04:45:28| carpSelectParent: 10.0.20.1:83 combined_hash
223054348 score 212789777
2007/12/19 04:45:28| carpSelectParent: 10.0.20.1:84 combined_hash
251909667 score 240317225
2007/12/19 04:45:28| carpSelectParent: 10.0.20.2:81 combined_hash
223054348 score 212789777
2007/12/19 04:45:28| carpSelectParent: 10.0.20.2:82 combined_hash
251909667 score 240317225
2007/12/19 04:45:28| carpSelectParent: 10.0.20.2:83 combined_hash
281703136 score 268739651
2007/12/19 04:45:28| carpSelectParent: 10.0.20.2:84 combined_hash
2862529730 score 2730801121

and

2007/12/19 04:39:43| carpSelectParent: selected 10.0.20.2:83
2007/12/19 04:39:43| carpSelectParent: selected 10.0.20.2:84
2007/12/19 04:39:43| carpSelectParent: selected 10.0.20.1:84
2007/12/19 04:39:43| carpSelectParent: selected 10.0.20.1:82
2007/12/19 04:39:43| carpSelectParent: selected 10.0.20.1:84
2007/12/19 04:39:44| carpSelectParent: selected 10.0.20.2:81
2007/12/19 04:39:44| carpSelectParent: selected 10.0.20.1:83
2007/12/19 04:39:44| carpSelectParent: selected 10.0.20.2:82
2007/12/19 04:39:44| carpSelectParent: selected 10.0.20.1:84
2007/12/19 04:39:44| carpSelectParent: selected 10.0.20.2:81

-- 
Tony Dodd, Systems Administrator
Last.fm | http://www.last.fm
Karen House 1-11 Baches Street
London N1 6DL
check out my music taste at:
http://www.last.fm/user/hawkeviper
Received on Tue Dec 18 2007 - 23:11:19 MST

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