Date: Fri, 19 Dec 2008 12:33:13 -0600
From: "Serge E. Hallyn" <serue@us.ibm.com>
To: David Howells <dhowells@redhat.com>
Cc: trond.myklebust@fys.uio.no, viro@ZenIV.linux.org.uk, nfsv4@linux-nfs.org,
       linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 03/45] Make the slow work pool configurable [ver #41]
Message-ID: <20081219183313.GB17113@us.ibm.com>
References: <20081120144139.10667.75519.stgit@warthog.procyon.org.uk> <20081120144155.10667.38747.stgit@warthog.procyon.org.uk>
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Quoting David Howells (dhowells@redhat.com):
> Make the slow work pool configurable through /proc/sys/kernel/slow-work.
> 
>  (*) /proc/sys/kernel/slow-work/min-threads
> 
>      The minimum number of threads that should be in the pool as long as it is
>      in use.  This may be anywhere between 2 and max-threads.
> 
>  (*) /proc/sys/kernel/slow-work/max-threads
> 
>      The maximum number of threads that should in the pool.  This may be
>      anywhere between min-threads and 255 or NR_CPUS * 2, whichever is greater.
> 
>  (*) /proc/sys/kernel/slow-work/vslow-percentage
> 
>      The percentage of active threads in the pool that may be used to execute
>      very slow work items.  This may be between 1 and 99.  The resultant number
>      is bounded to between 1 and one fewer than the number of active threads.
>      This ensures there is always at least one thread that can process very
>      slow work items, and always at least one thread that won't.
> 
> Signed-off-by: David Howells <dhowells@redhat.com>

Acked-by: Serge Hallyn <serue@us.ibm.com>
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