[sheepdog] [PATCH v2 0/5] work: implement a dynamically changing thread pool

Liu Yuan namei.unix at gmail.com
Thu Feb 28 12:30:34 CET 2013

On 02/28/2013 06:46 PM, MORITA Kazutaka wrote:
> This removes a short thread feature, and adds a worker thread pool
> again with support of dymanic pool size.  The reasons we need this
> series are:
>  - Currently, sheep calls a pthread_create for every I/O request, but
>    the overhead is not so cheap especially when the underlying disk is
>    fast (e.g. the disk has non-volatile cache).
>  - Some operations (e.g. object cache pusher) consumes too many
>    threads and causes a problem.  To control the maximum number of
>    threads, a thread pool model is better for us.
> Changes from v1:
>  - introduce a protection period for shrining work queue to avoid
>    frequent creation/deletion of threads
>  - rebase onto the latest master
>  - some cleanups
> MORITA Kazutaka (5):
>   work: remove short thread
>   logger: use LWP for worker idx
>   work: remove unused codes
>   work: glow the number of worker threads dynamically
>   work: shrink the number of worker threads dynamically

Can this patch set work with tracer enabled?


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