Specifies the maximum number of certificate validation processes that
Squid may spawn (numberofchildren) and several related options. Using
too few of these helper processes (a.k.a. "helpers") creates request
queues. Using too many helpers wastes your system resources. Squid
does not support spawning more than 32 helpers.
Usage: numberofchildren [option]...
The startup= and idle= options allow some measure of skew in your
tuning.
startup=N
Sets the minimum number of processes to spawn when Squid
starts or reconfigures. When set to zero the first request will
cause spawning of the first child process to handle it.
Starting too few children temporary slows Squid under load while it
tries to spawn enough additional processes to cope with traffic.
idle=N
Sets a minimum of how many processes Squid is to try and keep available
at all times. When traffic begins to rise above what the existing
processes can handle this many more will be spawned up to the maximum
configured. A minimum setting of 1 is required.
concurrency=
The number of requests each certificate validator helper can handle in
parallel. A value of 0 indicates the certificate validator does not
support concurrency. Defaults to 1.
When this directive is set to a value >= 1 then the protocol
used to communicate with the helper is modified to include
a request ID in front of the request/response. The request
ID from the request must be echoed back with the response
to that request.
queue-size=N
Sets the maximum number of queued requests. A request is queued when
no existing child can accept it due to concurrency limit and no new
child can be started due to numberofchildren limit. If the queued
requests exceed queue size for more than 3 minutes squid aborts its
operation. The default value is set to 2*numberofchildren.
You must have at least one ssl_crt_validator process.