From 36bdfc8bae51339aa27ef8e4ce148185293061ae Mon Sep 17 00:00:00 2001 From: Greg Banks Date: Mon, 2 Oct 2006 02:17:54 -0700 Subject: [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 Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sunrpc/svc.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/sunrpc/svc.h') diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index cb341f96eb8..5eabded1106 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 */ -- cgit v1.2.3