[squid-users] squid workers question

[Alex Rousskov]

On 03/09/2017 09:54 AM, Matus UHLAR - fantomas wrote:
>>>> 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

>>>> 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.

>> In my earlier paragraph, N is the value of the workers directive. There
>> are other kids (D diskers and one Coordinator). D is the number of rock
>> cache_dirs. Both workers and diskers need shared memory and IPC.
>>
>> If you want to turn off SMP while using rock store, start Squid with -N.
>> When started with -N, there will be a single process playing all four
>> roles (master, worker, disker, and Coordinator).

> Will running with "workers 1" avoid this issue while using separate
> processes for diskers?

No. Disker processes need shared memory to communicate with worker(s).

Alex.