[squid-users] squid -k rec , seems has problem with ram leakage ?

[--Ahmad--]

Hi Amos , 

so you mean that the extra Ram usage is from the instance when it loaded with traffic ?

will that stay even if i have cache men 0 and  and cache deny all  and disabling all HDD caching ?

is there anything can i do ?

or leave it s it is ?

cheers 

> On Feb 17, 2018, at 3:20 PM, Amos Jeffries <squid3 at treenet.co.nz> wrote:
> 
> On 18/02/18 00:57, --Ahmad-- wrote:
>> hi amos 
>> 
>> i didnt use the version 3.5.22
>> 
>>  but long time I’m using the 3.5.22 and its fine 
>> 
>> the new thing is I’m using like 100 squid instances .
>> 
>> and  hourly i have cron to change and update squid 
>> 
>> so i just make rec option instead of having session drop .
>> 
>> i don’t have exact mount of statistics to tell you 
>> 
>> but say i have 32 G ram 
>> 
>> if i run 100 squid instances it take about 16 G ram .
> 
> So that is the amount before much traffic has happened.
> 
> When traffic goes through the proxy Squid gains data which uses more
> memory for at least all the purposes listed at
> <https://wiki.squid-cache.org/SquidFaq/SquidMemory <https://wiki.squid-cache.org/SquidFaq/SquidMemory>>.
> 
> 
>> 
>> if i keep run the cron hourly by time say daily 12 times ( every 2 hours) 
>> 
>> and after 1 week i go to server to see free ram using :
>> 
>> free -m command
>> 
>> i see the free ram be like 5 G free , while I’m supposed to see the free
>> as 16 G
> 
> 
> +10GB for 100 instances means each is on average only using ~100 MB more
> than you expected. This is also the net difference between when you
> started the Squid and the peak traffic load within that whole week.
> 
> If you are not already graphing the memory usage I suggest you start
> doing so and look at the graphs for patterns. They may show a different
> story to what you (or I) are thinking is happening.
> 
> 
> Also, Squid provides SNMP data for automated measurements if you want to
> check the details rather than just the overall OS free measurement.
> 
> For example; comparing OID cacheMemUsage to cacheNumObjCount,
> cacheClients and cacheCurrentFileDescrCnt shows roughly the relative
> memory usage to each of the major dynamic memory consumers.
> 
> 
> Amos
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