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| author | Greg Banks <gnb@melbourne.sgi.com> | 2006-10-02 02:17:54 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-02 07:57:19 -0700 |
| commit | 36bdfc8bae51339aa27ef8e4ce148185293061ae (patch) | |
| tree | deab54ff70d6991c1e5be0d9efe97d10f65375b0 /include/linux | |
| parent | 4a3ae42dc312dbdffee803efaf393421b79f997a (diff) | |
| download | kernel_samsung_smdk4412-36bdfc8bae51339aa27ef8e4ce148185293061ae.zip kernel_samsung_smdk4412-36bdfc8bae51339aa27ef8e4ce148185293061ae.tar.gz kernel_samsung_smdk4412-36bdfc8bae51339aa27ef8e4ce148185293061ae.tar.bz2 | |
[PATCH] knfsd: move tempsock aging to a timer
Following are 11 patches from Greg Banks which combine to make knfsd more
Numa-aware. They reduce hitting on 'global' data structures, and create some
data-structures that can be node-local.
knfsd threads are bound to a particular node, and the thread to handle a new
request is chosen from the threads that are attach to the node that received
the interrupt.
The distribution of threads across nodes can be controlled by a new file in
the 'nfsd' filesystem, though the default approach of an even spread is
probably fine for most sites.
Some (old) numbers that show the efficacy of these patches: N == number of
NICs == number of CPUs == nmber of clients. Number of NUMA nodes == N/2
N Throughput, MiB/s CPU usage, % (max=N*100)
Before After Before After
--- ------ ---- ----- -----
4 312 435 350 228
6 500 656 501 418
8 562 804 690 589
This patch:
Move the aging of RPC/TCP connection sockets from the main svc_recv() loop to
a timer which uses a mark-and-sweep algorithm every 6 minutes. This reduces
the amount of work that needs to be done in the main RPC loop and the length
of time we need to hold the (effectively global) svc_serv->sv_lock.
[akpm@osdl.org: cleanup]
Signed-off-by: Greg Banks <gnb@melbourne.sgi.com>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/sunrpc/svc.h | 1 | ||||
| -rw-r--r-- | include/linux/sunrpc/svcsock.h | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index cb341f9..5eabded 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -40,6 +40,7 @@ struct svc_serv { struct list_head sv_permsocks; /* all permanent sockets */ struct list_head sv_tempsocks; /* all temporary sockets */ int sv_tmpcnt; /* count of temporary sockets */ + struct timer_list sv_temptimer; /* timer for aging temporary sockets */ char * sv_name; /* service name */ diff --git a/include/linux/sunrpc/svcsock.h b/include/linux/sunrpc/svcsock.h index d5f15e8..846aee9 100644 --- a/include/linux/sunrpc/svcsock.h +++ b/include/linux/sunrpc/svcsock.h @@ -31,6 +31,8 @@ struct svc_sock { #define SK_DEAD 6 /* socket closed */ #define SK_CHNGBUF 7 /* need to change snd/rcv buffer sizes */ #define SK_DEFERRED 8 /* request on sk_deferred */ +#define SK_OLD 9 /* used for temp socket aging mark+sweep */ +#define SK_DETACHED 10 /* detached from tempsocks list */ int sk_reserved; /* space on outq that is reserved */ |