[squid-users] squid workers question

[Matus UHLAR - fantomas]

>On 03/09/2017 07:21 AM, Matus UHLAR - fantomas wrote:
>> I have installed squid 3.4.8 on linux 3.16/64bit (debian 8 / jessie
>> version)
>>
>> (I know it's old, but I prefer using distribution-provided SW unless it has
>> real problem distribution isn't able to fix)

On 09.03.17 09:07, Alex Rousskov wrote:
>My answers are based on v5 code. (I know v5 is new, but I do not
>remember v3.4 specifics and v5 answers will be valid for a longer time.)

OK

>> I configured rock store (for smaller files) and (later) standard aufs
>> for others:
>>
>> cache_dir rock /var/spool/squid3/rock 1024 max-size=32768
>> #cache_dir aufs /var/spool/squid3 8192 16 256 min-size=32769
>>
>> are those correct values? (bug 3411 says something about 256B metadata)

>Both rock and AUFS stores support large objects so there is no
>requirement to split storage based on object sizes. Each store has
>various pros and cons, but lack of large object support is not one of
>the distinguishing characteristics.

I thought the cons of *ufs/disks is ineffective storage of small files,
while rock is ineffective with big files...

>> - do I get it right that kid1 is the Master, kid2 is the disker for rock
>>   store and kid3 is the single worker process?
>
>In SMP mode (which, BTW, AUFS store does not support),

could it crash squid instead of complaining?

> Master is not a
>kid (it is a parent of all kids), the first N kids are workers, the next
>D kids are diskers, and the last kid is Coordinator. Please see the
>following wiki section for more details.
>
>   http://wiki.squid-cache.org/Features/SmpScale#Terminology

I read that prior to posting, buuw I was wondering where do those kids get.

>If possible, avoid relying on this specific numbering scheme because
>mapping kid numbers to kid roles is not a part of a stable Squid
>interface IMO.
>
>
>> - restart with "workers 1" worked, but isn't that the default?
>
>Yes, "1" is the default value for the workers directive.

and this is why I wonder we have three kids, both when "workers" commented out
and when set to 1.

-- 
Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
     One OS to rule them all, One OS to find them, 
One OS to bring them all and into darkness bind them