[master] ca8bd53 improve thread_pools documentation
Guillaume Quintard
guillaume at varnish-software.com
Fri Sep 9 17:57:52 CEST 2016
Typo : "is probably detrimMENTal"
On Sep 9, 2016 17:17, "Nils Goroll" <nils.goroll at uplex.de> wrote:
>
> commit ca8bd536e58589a208e9b855cdf726efd2a55675
> Author: Nils Goroll <nils.goroll at uplex.de>
> Date: Fri Sep 9 16:31:03 2016 +0200
>
> improve thread_pools documentation
>
> diff --git a/bin/varnishd/mgt/mgt_pool.c b/bin/varnishd/mgt/mgt_pool.c
> index 327a4c2..7f0e78f 100644
> --- a/bin/varnishd/mgt/mgt_pool.c
> +++ b/bin/varnishd/mgt/mgt_pool.c
> @@ -84,11 +84,14 @@ struct parspec WRK_parspec[] = {
> "1", NULL,
> "Number of worker thread pools.\n"
> "\n"
> - "Increasing number of worker pools decreases lock "
> - "contention.\n"
> + "Increasing the number of worker pools decreases lock "
> + "contention. Each worker pool also has a thread accepting "
> + "new connections, so for very high rates of incoming new "
> + "connections on systems with many cores, increasing the "
> + "worker pools may be required.\n"
> "\n"
> - "Too many pools waste CPU and RAM resources, and more than
> "
> - "one pool for each CPU is probably detrimal to
> performance.\n"
> + "Too many pools waste CPU and RAM resources, and more than
> one "
> + "pool for each CPU is most likely detrimal to
> performance.\n"
> "\n"
> "Can be increased on the fly, but decreases require a "
> "restart to take effect.",
> diff --git a/include/tbl/params.h b/include/tbl/params.h
> index 57bab3a..475086c 100644
> --- a/include/tbl/params.h
> +++ b/include/tbl/params.h
> @@ -1170,10 +1170,14 @@ PARAM(
> /* s-text */
> "Number of worker thread pools.\n"
> "\n"
> - "Increasing number of worker pools decreases lock contention.\n"
> + "Increasing the number of worker pools decreases lock "
> + "contention. Each worker pool also has a thread accepting "
> + "new connections, so for very high rates of incoming new "
> + "connections on systems with many cores, increasing the "
> + "worker pools may be required.\n"
> "\n"
> "Too many pools waste CPU and RAM resources, and more than one "
> - "pool for each CPU is probably detrimal to performance.\n"
> + "pool for each CPU is most likely detrimal to performance.\n"
> "\n"
> "Can be increased on the fly, but decreases require a restart to "
> "take effect.",
>
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