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36bdfc8bae
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Greg Banks 36bdfc8bae [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>
2006-10-02 07:57:19 -07:00
..
acpi
asm-alpha [PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks 2006-10-01 00:39:21 -07:00
asm-arm [PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks 2006-10-01 00:39:21 -07:00
asm-arm26 [PATCH] consistently use MAX_ERRNO in __syscall_return 2006-09-27 08:26:18 -07:00
asm-avr32 [PATCH] AVR32 MTD: Static Memory Controller driver 2006-09-26 08:48:54 -07:00
asm-cris [PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks 2006-10-01 00:39:21 -07:00
asm-frv [PATCH] paravirt: remove set pte atomic 2006-10-01 00:39:34 -07:00
asm-generic [PATCH] paravirt: remove set pte atomic 2006-10-01 00:39:34 -07:00
asm-h8300 [PATCH] remove SYSRQ_KEY and related defines from ppc/sh/h8300 2006-10-01 00:39:22 -07:00
asm-i386 [PATCH] Add regs_return_value() helper 2006-10-02 07:57:16 -07:00
asm-ia64 [PATCH] Add regs_return_value() helper 2006-10-02 07:57:16 -07:00
asm-m32r [PATCH] paravirt: remove set pte atomic 2006-10-01 00:39:34 -07:00
asm-m68k [PATCH] consistently use MAX_ERRNO in __syscall_return 2006-09-27 08:26:18 -07:00
asm-m68knommu [PATCH] consistently use MAX_ERRNO in __syscall_return 2006-09-27 08:26:18 -07:00
asm-mips [PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks 2006-10-01 00:39:21 -07:00
asm-parisc [PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks 2006-10-01 00:39:21 -07:00
asm-powerpc [PATCH] Add regs_return_value() helper 2006-10-02 07:57:16 -07:00
asm-ppc [PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks 2006-10-01 00:39:21 -07:00
asm-s390 [PATCH] Add regs_return_value() helper 2006-10-02 07:57:16 -07:00
asm-sh [PATCH] remove SYSRQ_KEY and related defines from ppc/sh/h8300 2006-10-01 00:39:22 -07:00
asm-sh64 [PATCH] ntp: cleanup defines and comments 2006-10-01 00:39:27 -07:00
asm-sparc [PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks 2006-10-01 00:39:21 -07:00
asm-sparc64 [PATCH] Directed yield: cpu_relax variants for spinlocks and rw-locks 2006-10-01 00:39:21 -07:00
asm-um [PATCH] uml: remove pte_mkexec 2006-09-29 09:18:04 -07:00
asm-v850 [PATCH] consistently use MAX_ERRNO in __syscall_return 2006-09-27 08:26:18 -07:00
asm-x86_64 [PATCH] Add regs_return_value() helper 2006-10-02 07:57:16 -07:00
asm-xtensa [PATCH] ntp: cleanup defines and comments 2006-10-01 00:39:27 -07:00
crypto [CRYPTO] digest: Added user API for new hash type 2006-09-21 11:46:17 +10:00
keys
linux [PATCH] knfsd: move tempsock aging to a timer 2006-10-02 07:57:19 -07:00
math-emu
media Merge master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb 2006-09-30 09:39:15 -07:00
mtd Merge git://git.infradead.org/~dwmw2/hdroneline 2006-09-22 12:56:22 -07:00
net [PATCH] Add genetlink utilities for payload length calculation 2006-10-01 00:39:29 -07:00
pcmcia
rdma IB/sa: fix ib_sa_selector names 2006-09-22 15:22:55 -07:00
rxrpc
scsi [PATCH] scsi: device_reprobe() can fail 2006-09-30 19:33:43 -07:00
sound [PATCH] maximum latency tracking: ALSA support 2006-10-01 00:39:19 -07:00
video [HEADERS] One line per header in Kbuild files to reduce conflicts 2006-09-19 12:43:58 +01:00
Kbuild [HEADERS] One line per header in Kbuild files to reduce conflicts 2006-09-19 12:43:58 +01:00