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Update default broker threading configuration

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Now defaults to a max of 4 threads typically indepedent of core
count (previously could go up to a hard cap of 8).  Also now allow
controlling this setting via BRO_BROKER_MAX_THREADS environment
variable.
This commit is contained in:
Jon Siwek 2018-08-10 17:08:26 -05:00
parent 9f12b56105
commit 083947af41
2 changed files with 26 additions and 17 deletions
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8
scripts/base/frameworks/broker/main.bro
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@ -56,9 +56,11 @@ export {
## control mechanisms).
const congestion_queue_size = 200 &redef;
## Max number of threads to use for Broker/CAF functionality.
## Using zero will cause this to be automatically determined
## based on number of available CPUs.
## Max number of threads to use for Broker/CAF functionality. Setting to
## zero implies using the value of BRO_BROKER_MAX_THREADS environment
## variable, if set, or else typically defaults to 4 (actually 2 threads
## when simply reading offline pcaps as there's not expected to be any
## communication and more threads just adds more overhead).
const max_threads = 0 &redef;
## Max number of microseconds for under-utilized Broker/CAF