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Re: squid-users Digest, Vol 29, Issue 24

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Hi

Thanks guys for replies.

@Matus UHLA,

Yes the mem cache is shared among the 4 squid worker processes.

Rahat



On 11-Jan-17 7:33 PM, squid-users-request@xxxxxxxxxxxxxxxxxxxxx wrote:
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Today's Topics:

    1. Re: Squid Memory Problems (Eliezer  Croitoru)
    2. Re: Squid Memory Problems (Matus UHLAR - fantomas)
    3. Re: ERR_CANNOT_FORWARD with Squid + Privoxy (Amos Jeffries)
    4. Re: SSL_bump and source IP (Amos Jeffries)
    5. Re: squid-users Digest, Vol 29, Issue 21 (Vidyadhish Joshi)


----------------------------------------------------------------------

Message: 1
Date: Wed, 11 Jan 2017 15:53:59 +0200
From: "Eliezer  Croitoru" <eliezer@xxxxxxxxxxxx>
To: "'Rahat Ali Khan'" <rahat.khan@xxxxxxxxxx>,
	<squid-users@xxxxxxxxxxxxxxxxxxxxx>
Subject: Re:  Squid Memory Problems
Message-ID: <043001d26c12$2902dbb0$7b089310$@ngtech.co.il>
Content-Type: text/plain;	charset="utf-8"

There was a report about an issue and the claim was Ubuntu Kernel issue.
I believe that the first step would be to find out if a kernel downgrade or upgrade (to xenial one) helps with the issue.

Eliezer

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Mobile: +972-5-28704261
Email: eliezer@xxxxxxxxxxxx


From: squid-users [mailto:squid-users-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Rahat Ali Khan
Sent: Wednesday, January 11, 2017 3:21 PM
To: squid-users@xxxxxxxxxxxxxxxxxxxxx
Subject:  Squid Memory Problems

Hi there,
We are using Squid 3.5.14 on Ubuntu 14.04 LTS.  The squid is using 4 worker process and is used as an explicit and intercept proxy.
We have been facing a problem of squid processes consuming the memory gradually and eventually it comes to a minimum threshold. The end user browsing experience becomes extremely slow at that time. Cache memory configured is 2 GB and total memory of squid machines is 8 and 16 GB on different boxes. The memory consumption graphs shows a gradual decrease in available physical RAM  and we have to ultimately restart the squid boxed after 3-4 days.
The stats we get from cachemgr show:
Cache information for squid:
         Hits as % of all requests:      5min: 1.7%, 60min: 2.2%
         Hits as % of bytes sent:        5min: 0.2%, 60min: 0.1%
         Memory hits as % of hit requests:       5min: 91.7%, 60min: 82.8%
         Disk hits as % of hit requests: 5min: 0.0%, 60min: 0.0%
         Storage Swap size:      0 KB
         Storage Swap capacity:   0.0% used,  0.0% free
         Storage Mem size:       2097056 KB
         Storage Mem capacity:   100.0% used,  0.0% free
         Mean Object Size:       0.00 KB

We are suspecting memory leaks to be the cause of this. Please share you experiences .
Thanks
Rahat
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------------------------------

Message: 2
Date: Wed, 11 Jan 2017 15:08:13 +0100
From: Matus UHLAR - fantomas <uhlar@xxxxxxxxxxx>
To: squid-users@xxxxxxxxxxxxxxxxxxxxx
Subject: Re:  Squid Memory Problems
Message-ID: <20170111140813.GB19926@xxxxxxxxxxx>
Content-Type: text/plain; charset=us-ascii; format=flowed

On 11.01.17 18:20, Rahat Ali Khan wrote:
We are using Squid 3.5.14 on Ubuntu 14.04 LTS.  The squid is using 4
worker process and is used as an explicit and intercept proxy.

We have been facing a problem of squid processes consuming the memory
gradually and eventually it comes to a minimum threshold. The end
user browsing experience becomes extremely slow at that time. Cache
memory configured is 2 GB and total memory of squid machines is 8 and
16 GB on different boxes. The memory consumption graphs shows a
gradual decrease in available physical RAM and we have to ultimately
restart the squid boxed after 3-4 days.
I would like to note that squid does not use memory only for cache, but for
many different uses.

do you use shared memory cache?



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