Re: [squid-users] Squid monitoring, access report shows upto 5 % to 7 % cache usage

On 30/07/2013 6:13 p.m., John Joseph wrote:
>
> Hi Antony
> thanks for the reply, I have filed up the corresponding information below
>
>
> ->---- Original Message -----
>> From: Antony Stone <Antony.Stone_at_squid.open.source.it>
>> To: "squid-users_at_squid-cache.org" <squid-users_at_squid-cache.org>
>> Cc:
>> Sent: Monday, 29 July 2013 2:45 PM
>> Subject: Re: [squid-users] Squid monitoring, access report shows upto 5 % to 7 % cache usage
>> On Monday 29 July 2013 at 12:36:05, John Joseph wrote:
>>> Hi All
>>>
>>> For purpose of convincing about the squid cahce, I installed and started
>>> monitoring SQUID using mysar "http://sourceforge.net/projects/mysar/";
>>>
>>> Is this % too low or average how much should a optimized squid setup give.
>>> Or should I dig into some more configuration to pump the cache %
>> How large is your cache?
> It is around 556GB, my cache dir details in squid.conf are
>
> cache_dir aufs /opt/var/spool/squid 570000 32 256
>
>
>> How many users are going via Squid?
> At present not more than 250 users, but concurrent users will not be more than 50 users
>
>
>> How long have they been using it (how long has Squid been building up its
> cache)?
> 3 months
>
>
>> How many connection requests do you have per minute/hour/day/whatever makes
> sense?
> Can you please advice me on how to check for this parameter
>
>> How many cache HITs do you see in the log file compared to MISSes (ie: how
> often are cached objects being requested)?
> Can you please advice me on how to check for this parameter

Simplest way is:
.../access.log | grep -c "HIT"
.../access.log | grep -c "REFRESH"
.../access.log | grep -c "MISS"

The next best is:
  squidclient mgr:info

>
>> Any other relevant information you can supply might be helpful in providing an
> answer.
>
> from the mysar, I get the following information, which I am pasting here

Ah. This last column "5.00%" seems to be the HIT percentage over all
taht traffic.

> USERS HOSTS SITES TRAFFIC Cache Percent
> 12 990 18336 47.71G 5.00%
> 21 1020 26877 86.57G 5.00%
> 31 1017 24811 105.67G 4.00%
> 59 1024 29185 119.15G 4.00%
> 41 1022 27245 106.82G 5.00%
> 25 1022 26785 86.68G 5.00%
> 29 1019 26609 71.94G 6.00%
> 23 1019 24863 79.48G 5.00%
> 20 1016 24334 77.44G 5.00%
> 43 1015 25206 72.18G 5.00%
> 18 1016 24187 81.28G 5.00%
> 38 1021 25538 80.74G 6.00%
> 30 1021 27427 85.19G 5.00%
> 31 1021 27369 96.13G 5.00%
> 29 1019 23879 74.26G 5.00%
> 28 1014 20715 70.90G 5.00%
> 22 1010 22537 69.59G 5.00%
> 22 1021 23031 86.52G 4.00%
> 19 1015 22542 73.21G 5.00%
> 16 1020 22408 74.67G 5.00%
> 23 1021 23594 72.99G 5.00%
> 28 1021 23408 71.97G 6.00%
> 17 1006 21390 64.28G 5.00%
> 23 994 22685 61.42G 5.00%
> 20 1016 25792 71.54G 5.00%
> 24 1017 25178 74.03G 5.00%
> 37 1019 29740 83.19G 5.00%
> 22 1020 25175 77.47G 5.00%
>
>
> Guidance and advice requested.
> Thanks
>
> Joseph John

Amos
Received on Tue Jul 30 2013 - 08:12:59 MDT