From: David Howells <dhowells@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: nfsv4@linux-nfs.org, linux-kernel@vger.kernel.org,
dhowells@redhat.com, viro@ZenIV.linux.org.uk,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 01/45] Create a dynamically sized pool of threads for doing very slow work items [ver #41]
Date: Fri, 21 Nov 2008 10:24:00 +0000 [thread overview]
Message-ID: <18617.1227263040@redhat.com> (raw)
In-Reply-To: <20081121000913.6506d7b6.akpm@linux-foundation.org>
Andrew Morton <akpm@linux-foundation.org> wrote:
> umm, if they're slow, why not create a kernel thread per operation?
> Why add the thread pool?
Because if someone does a tar of, say, a kernel tree, that'll create one
thread per file... This provides a limiter - and makes sure there are threads
immediately available.
David
next prev parent reply other threads:[~2008-11-21 10:24 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-20 14:41 [PATCH 00/45] Permit filesystem local caching [ver #41] David Howells
2008-11-20 14:41 ` [PATCH 01/45] Create a dynamically sized pool of threads for doing very slow work items " David Howells
2008-11-21 8:09 ` Andrew Morton
2008-11-21 10:24 ` David Howells [this message]
2008-11-21 18:17 ` Andrew Morton
2008-11-22 0:38 ` David Howells
2008-12-19 4:14 ` Serge E. Hallyn
2008-12-19 4:19 ` Serge E. Hallyn
2008-12-19 7:15 ` Andrew Morton
2008-12-19 11:42 ` David Howells
2008-12-19 11:44 ` David Howells
2008-12-19 12:12 ` David Howells
2008-12-19 16:52 ` Serge E. Hallyn
2008-12-19 12:54 ` David Howells
2008-11-20 14:41 ` [PATCH 02/45] Make slow-work thread pool actually dynamic " David Howells
2008-12-19 17:58 ` Serge E. Hallyn
2008-11-20 14:41 ` [PATCH 03/45] Make the slow work pool configurable " David Howells
2008-12-19 18:33 ` Serge E. Hallyn
2008-11-20 14:42 ` [PATCH 04/45] Document the slow work thread pool " David Howells
2008-11-20 14:42 ` [PATCH 05/45] FS-Cache: Release page->private after failed readahead " David Howells
2008-11-21 8:12 ` Andrew Morton
2008-11-21 10:27 ` David Howells
2008-11-20 14:42 ` [PATCH 06/45] FS-Cache: Recruit a couple of page flags for cache management " David Howells
2008-11-21 8:17 ` Andrew Morton
2008-11-21 10:31 ` David Howells
2008-11-20 14:42 ` [PATCH 07/45] FS-Cache: Provide an add_wait_queue_tail() function " David Howells
2008-11-21 8:17 ` Andrew Morton
2008-11-21 13:32 ` David Howells
2008-11-20 14:42 ` [PATCH 08/45] FS-Cache: Add the FS-Cache netfs API and documentation " David Howells
2008-11-20 14:42 ` [PATCH 09/45] FS-Cache: Add the FS-Cache cache backend " David Howells
2008-11-20 14:42 ` [PATCH 10/45] FS-Cache: Add main configuration option, module entry points and debugging " David Howells
2008-11-20 14:42 ` [PATCH 11/45] FS-Cache: Add use of /proc and presentation of statistics " David Howells
2008-11-21 0:15 ` Alexey Dobriyan
2008-11-21 2:17 ` David Howells
2008-11-21 2:34 ` Alexey Dobriyan
2008-11-21 15:32 ` David Howells
2008-11-20 14:42 ` [PATCH 12/45] FS-Cache: Root index definition " David Howells
2008-11-20 14:42 ` [PATCH 13/45] FS-Cache: Add cache tag handling " David Howells
2008-11-20 14:42 ` [PATCH 14/45] FS-Cache: Add cache management " David Howells
2008-11-20 14:42 ` [PATCH 15/45] FS-Cache: Provide a slab for cookie allocation " David Howells
2008-11-20 14:43 ` [PATCH 16/45] FS-Cache: Add netfs registration " David Howells
2008-11-20 14:43 ` [PATCH 17/45] FS-Cache: Bit waiting helpers " David Howells
2008-11-20 14:43 ` [PATCH 18/45] FS-Cache: Object management state machine " David Howells
2008-11-20 14:43 ` [PATCH 19/45] FS-Cache: Implement the cookie management part of the netfs API " David Howells
2008-11-20 14:43 ` [PATCH 20/45] FS-Cache: Add and document asynchronous operation handling " David Howells
2008-11-20 14:43 ` [PATCH 21/45] FS-Cache: Implement data I/O part of netfs API " David Howells
2008-11-20 14:43 ` [PATCH 22/45] CacheFiles: Add missing copy_page export for ia64 " David Howells
2008-11-20 14:43 ` [PATCH 23/45] CacheFiles: Be consistent about the use of mapping vs file->f_mapping in Ext3 " David Howells
2008-11-22 17:38 ` Andreas Dilger
2008-11-26 14:40 ` David Howells
2008-11-20 14:43 ` [PATCH 24/45] CacheFiles: Add a hook to write a single page of data to an inode " David Howells
2008-11-21 8:23 ` Andrew Morton
2008-11-21 12:43 ` David Howells
2008-11-21 13:00 ` Jamie Lokier
2008-11-21 17:15 ` Valdis.Kletnieks
2008-11-21 17:36 ` Randy Dunlap
2008-11-21 18:31 ` Andrew Morton
2008-11-22 0:48 ` David Howells
2008-11-20 14:43 ` [PATCH 25/45] CacheFiles: Permit the page lock state to be monitored " David Howells
2008-11-20 14:43 ` [PATCH 26/45] CacheFiles: Export things for CacheFiles " David Howells
2008-11-20 14:43 ` [PATCH 27/45] CacheFiles: A cache that backs onto a mounted filesystem " David Howells
2008-11-20 14:44 ` [PATCH 28/45] FS-Cache: Make kAFS use FS-Cache " David Howells
2008-11-20 14:44 ` [PATCH 29/45] NFS: Add comment banners to some NFS functions " David Howells
2008-11-20 14:44 ` [PATCH 30/45] NFS: Add FS-Cache option bit and debug bit " David Howells
2008-11-20 14:44 ` [PATCH 31/45] NFS: Permit local filesystem caching to be enabled for NFS " David Howells
2008-11-20 14:44 ` [PATCH 32/45] NFS: Register NFS for caching and retrieve the top-level index " David Howells
2008-11-20 14:44 ` [PATCH 33/45] NFS: Define and create server-level objects " David Howells
2008-11-20 14:44 ` [PATCH 34/45] NFS: Define and create superblock-level " David Howells
2008-11-20 14:44 ` [PATCH 35/45] NFS: Define and create inode-level cache " David Howells
2008-11-20 14:44 ` [PATCH 36/45] NFS: Use local disk inode cache " David Howells
2008-11-20 14:44 ` [PATCH 37/45] NFS: Invalidate FsCache page flags when cache removed " David Howells
2008-11-20 14:44 ` [PATCH 38/45] NFS: Add some new I/O counters for FS-Cache doing things for NFS " David Howells
2008-11-20 14:45 ` [PATCH 39/45] NFS: FS-Cache page management " David Howells
2008-11-20 14:45 ` [PATCH 40/45] NFS: Add read context retention for FS-Cache to call back with " David Howells
2008-11-20 14:45 ` [PATCH 41/45] NFS: nfs_readpage_async() needs to be accessible as a fallback for local caching " David Howells
2008-11-20 14:45 ` [PATCH 42/45] NFS: Read pages from FS-Cache into an NFS inode " David Howells
2008-11-20 14:45 ` [PATCH 43/45] NFS: Store pages from an NFS inode into a local cache " David Howells
2008-11-20 14:45 ` [PATCH 44/45] NFS: Display local caching state " David Howells
2008-11-20 14:45 ` [PATCH 45/45] NFS: Add mount options to enable local caching on NFS " David Howells
2008-11-21 8:28 ` [PATCH 00/45] Permit filesystem local caching " Andrew Morton
2008-11-22 1:11 ` David Howells
2008-11-25 0:09 ` David Howells
2008-11-25 13:39 ` FS-Cache Benchmarks David Howells
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