From: Linus Torvalds <torvalds@linux-foundation.org>
To: Eric Dumazet <dada1@cosmosbay.com>
Cc: Ingo Molnar <mingo@elte.hu>, David Miller <davem@davemloft.net>,
rjw@sisk.pl, linux-kernel@vger.kernel.org,
kernel-testers@vger.kernel.org, cl@linux-foundation.org,
efault@gmx.de, a.p.zijlstra@chello.nl,
Stephen Hemminger <shemminger@vyatta.com>
Subject: Re: [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28
Date: Mon, 17 Nov 2008 09:38:43 -0800 (PST) [thread overview]
Message-ID: <alpine.LFD.2.00.0811170937540.3468@nehalem.linux-foundation.org> (raw)
In-Reply-To: <4921AAD6.3010603@cosmosbay.com>
On Mon, 17 Nov 2008, Eric Dumazet wrote:
> Ingo Molnar a écrit :
> > it gives a small speedup of ~1% on my box:
> >
> > before: Throughput 3437.65 MB/sec 64 procs
> > after: Throughput 3473.99 MB/sec 64 procs
>
> Strange, I get 2350 MB/sec on my 8 cpus box. "tbench 8"
I think Ingo may have a Nehalem. Let's just say that those things rock,
and have rather good memory throughput.
Linus
next prev parent reply other threads:[~2008-11-17 17:40 UTC|newest]
Thread overview: 220+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-16 17:38 2.6.28-rc5: Reported regressions 2.6.26 -> 2.6.27 Rafael J. Wysocki
2008-11-16 17:38 ` [Bug #11207] VolanoMark regression with 2.6.27-rc1 Rafael J. Wysocki
2008-11-16 17:40 ` [Bug #11215] INFO: possible recursive locking detected ps2_command Rafael J. Wysocki
2008-11-16 17:40 ` [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 Rafael J. Wysocki
2008-11-17 9:06 ` Ingo Molnar
2008-11-17 9:14 ` David Miller
2008-11-17 11:01 ` Ingo Molnar
2008-11-17 11:20 ` Eric Dumazet
2008-11-17 16:11 ` Ingo Molnar
2008-11-17 16:35 ` Eric Dumazet
2008-11-17 17:08 ` Ingo Molnar
2008-11-17 17:25 ` Ingo Molnar
2008-11-17 17:33 ` Eric Dumazet
2008-11-17 17:38 ` Linus Torvalds [this message]
2008-11-17 17:42 ` Eric Dumazet
2008-11-17 18:23 ` Ingo Molnar
2008-11-17 18:33 ` Linus Torvalds
2008-11-17 18:49 ` Ingo Molnar
2008-11-17 19:30 ` Eric Dumazet
2008-11-17 19:39 ` David Miller
2008-11-17 19:43 ` Eric Dumazet
2008-11-17 19:55 ` Linus Torvalds
2008-11-17 20:16 ` David Miller
2008-11-17 20:30 ` Linus Torvalds
2008-11-17 20:58 ` David Miller
2008-11-18 9:44 ` Nick Piggin
2008-11-18 15:58 ` Linus Torvalds
2008-11-19 4:31 ` Nick Piggin
2008-11-20 9:14 ` David Miller
2008-11-20 9:06 ` David Miller
2008-11-18 12:29 ` Mike Galbraith
2008-11-17 19:57 ` Ingo Molnar
2008-11-17 20:20 ` (avc_has_perm_noaudit()) " Ingo Molnar
2008-11-17 20:32 ` ip_queue_xmit(): " Ingo Molnar
2008-11-17 20:57 ` Eric Dumazet
2008-11-18 9:12 ` Nick Piggin
2008-11-17 20:47 ` Ingo Molnar
2008-11-17 20:56 ` Eric Dumazet
2008-11-17 20:55 ` skb_release_head_state(): " Ingo Molnar
2008-11-17 21:01 ` David Miller
2008-11-17 21:04 ` Eric Dumazet
2008-11-17 21:34 ` Linus Torvalds
2008-11-17 21:38 ` Ingo Molnar
2008-11-17 21:09 ` tcp_ack(): " Ingo Molnar
2008-11-17 21:19 ` tcp_recvmsg(): " Ingo Molnar
2008-11-17 21:26 ` eth_type_trans(): " Ingo Molnar
2008-11-17 21:40 ` Eric Dumazet
2008-11-17 23:41 ` Eric Dumazet
2008-11-18 0:01 ` Linus Torvalds
2008-11-18 8:35 ` Eric Dumazet
2008-11-17 21:52 ` Linus Torvalds
2008-11-18 5:16 ` David Miller
2008-11-18 5:35 ` Eric Dumazet
2008-11-18 7:00 ` David Miller
2008-11-18 8:30 ` Ingo Molnar
2008-11-18 8:49 ` Eric Dumazet
2008-11-17 21:35 ` __inet_lookup_established(): " Ingo Molnar
2008-11-17 22:14 ` Eric Dumazet
2008-11-17 21:59 ` system_call() - " Ingo Molnar
2008-11-17 22:09 ` Linus Torvalds
2008-11-17 22:08 ` Ingo Molnar
2008-11-17 22:15 ` Eric Dumazet
2008-11-17 22:26 ` Ingo Molnar
2008-11-17 22:39 ` Eric Dumazet
2008-11-18 5:23 ` David Miller
2008-11-18 8:45 ` Ingo Molnar
2008-11-17 22:14 ` tcp_transmit_skb() - " Ingo Molnar
2008-11-17 22:19 ` Ingo Molnar
2008-11-17 19:36 ` David Miller
2008-11-17 19:31 ` David Miller
2008-11-17 19:47 ` Linus Torvalds
2008-11-17 19:51 ` David Miller
2008-11-17 19:53 ` Ingo Molnar
2008-11-17 22:47 ` Ingo Molnar
2008-11-17 19:21 ` David Miller
2008-11-17 19:48 ` Linus Torvalds
2008-11-17 19:52 ` David Miller
2008-11-17 19:57 ` Linus Torvalds
2008-11-17 20:18 ` David Miller
2008-11-19 19:43 ` Christoph Lameter
2008-11-19 20:14 ` Ingo Molnar
2008-11-20 23:52 ` Christoph Lameter
2008-11-21 8:30 ` Ingo Molnar
2008-11-21 8:51 ` Eric Dumazet
2008-11-21 9:05 ` David Miller
2008-11-21 12:51 ` Eric Dumazet
2008-11-21 15:13 ` [PATCH] fs: pipe/sockets/anon dentries should not have a parent Eric Dumazet
2008-11-21 15:21 ` Ingo Molnar
2008-11-21 15:28 ` Eric Dumazet
2008-11-21 15:34 ` Ingo Molnar
2008-11-26 23:27 ` [PATCH 0/6] fs: Scalability of sockets/pipes allocation/deallocation on SMP Eric Dumazet
2008-11-27 1:37 ` Christoph Lameter
2008-11-27 6:27 ` Eric Dumazet
2008-11-27 14:44 ` Christoph Lameter
2008-11-27 9:39 ` Christoph Hellwig
2008-11-28 18:03 ` Ingo Molnar
2008-11-28 18:47 ` Peter Zijlstra
2008-11-29 6:38 ` Christoph Hellwig
2008-11-29 8:07 ` Eric Dumazet
2008-11-29 8:43 ` [PATCH v2 0/5] " Eric Dumazet
2008-12-11 22:38 ` [PATCH v3 0/7] " Eric Dumazet
2008-12-11 22:38 ` [PATCH v3 1/7] fs: Use a percpu_counter to track nr_dentry Eric Dumazet
2007-07-24 1:24 ` Nick Piggin
2008-12-16 21:04 ` Paul E. McKenney
2008-12-11 22:39 ` [PATCH v3 2/7] fs: Use a percpu_counter to track nr_inodes Eric Dumazet
2007-07-24 1:30 ` Nick Piggin
2008-12-12 5:11 ` Eric Dumazet
2008-12-16 21:10 ` Paul E. McKenney
2008-12-11 22:39 ` [PATCH v3 3/7] fs: Introduce a per_cpu last_ino allocator Eric Dumazet
2007-07-24 1:34 ` Nick Piggin
2008-12-16 21:26 ` Paul E. McKenney
2008-12-11 22:39 ` [PATCH v3 4/7] fs: Introduce SINGLE dentries for pipes, socket, anon fd Eric Dumazet
2008-12-16 21:40 ` Paul E. McKenney
2008-12-11 22:40 ` [PATCH v3 5/7] fs: new_inode_single() and iput_single() Eric Dumazet
2008-12-16 21:41 ` Paul E. McKenney
2008-12-11 22:40 ` [PATCH v3 6/7] fs: struct file move from call_rcu() to SLAB_DESTROY_BY_RCU Eric Dumazet
2007-07-24 1:13 ` Nick Piggin
2008-12-12 2:50 ` Nick Piggin
2008-12-12 4:45 ` Eric Dumazet
2008-12-12 16:48 ` Eric Dumazet
2008-12-13 2:07 ` Christoph Lameter
2008-12-17 20:25 ` Eric Dumazet
2008-12-13 1:41 ` Christoph Lameter
2008-12-11 22:41 ` [PATCH v3 7/7] fs: MS_NOREFCOUNT Eric Dumazet
2008-11-29 8:43 ` [PATCH v2 1/5] fs: Use a percpu_counter to track nr_dentry Eric Dumazet
2008-11-29 8:43 ` [PATCH v2 2/5] fs: Use a percpu_counter to track nr_inodes Eric Dumazet
2008-11-29 8:44 ` [PATCH v2 3/5] fs: Introduce a per_cpu last_ino allocator Eric Dumazet
2008-11-29 8:44 ` [PATCH v2 4/5] fs: Introduce SINGLE dentries for pipes, socket, anon fd Eric Dumazet
2008-11-29 10:38 ` Jörn Engel
2008-11-29 11:14 ` Eric Dumazet
2008-11-29 8:45 ` [PATCH v2 5/5] fs: new_inode_single() and iput_single() Eric Dumazet
2008-11-29 11:14 ` Jörn Engel
2008-11-26 23:30 ` [PATCH 1/6] fs: Introduce a per_cpu nr_dentry Eric Dumazet
2008-11-27 9:41 ` Christoph Hellwig
2008-11-26 23:32 ` [PATCH 3/6] fs: Introduce a per_cpu last_ino allocator Eric Dumazet
2008-11-27 9:46 ` Christoph Hellwig
2008-11-26 23:32 ` [PATCH 4/6] fs: Introduce a per_cpu nr_inodes Eric Dumazet
2008-11-27 9:32 ` Peter Zijlstra
2008-11-27 9:39 ` Peter Zijlstra
2008-11-27 9:48 ` Christoph Hellwig
2008-11-27 10:01 ` Eric Dumazet
2008-11-27 10:07 ` Andi Kleen
2008-11-27 14:46 ` Christoph Lameter
2008-11-26 23:32 ` [PATCH 5/6] fs: Introduce special inodes Eric Dumazet
2008-11-27 8:20 ` David Miller
2008-11-26 23:32 ` [PATCH 6/6] fs: Introduce kern_mount_special() to mount special vfs Eric Dumazet
2008-11-27 8:21 ` David Miller
2008-11-27 9:53 ` Christoph Hellwig
2008-11-27 10:04 ` Eric Dumazet
2008-11-27 10:10 ` Christoph Hellwig
2008-11-28 9:26 ` Al Viro
2008-11-28 9:34 ` Al Viro
2008-11-28 18:02 ` Ingo Molnar
2008-11-28 18:58 ` Ingo Molnar
2008-11-28 22:20 ` Eric Dumazet
2008-11-28 22:37 ` Eric Dumazet
2008-11-28 22:43 ` Eric Dumazet
2008-11-21 15:36 ` [PATCH] fs: pipe/sockets/anon dentries should not have a parent Christoph Hellwig
2008-11-21 17:58 ` [PATCH] fs: pipe/sockets/anon dentries should have themselves as parent Eric Dumazet
2008-11-21 18:43 ` Matthew Wilcox
2008-11-23 3:53 ` Eric Dumazet
2008-11-21 9:18 ` [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 Ingo Molnar
2008-11-21 9:03 ` David Miller
2008-11-21 16:11 ` Christoph Lameter
2008-11-21 18:06 ` Christoph Lameter
2008-11-21 18:16 ` Eric Dumazet
2008-11-21 18:19 ` Eric Dumazet
2008-11-16 17:40 ` [Bug #11664] acpi errors and random freeze on sony vaio sr Rafael J. Wysocki
2008-11-16 17:40 ` [Bug #11698] 2.6.27-rc7, freezes with > 1 s2ram cycle Rafael J. Wysocki
2008-11-16 17:40 ` [Bug #11404] BUG: in 2.6.23-rc3-git7 in do_cciss_intr Rafael J. Wysocki
2008-11-17 16:19 ` Randy Dunlap
2008-11-16 17:40 ` [Bug #11569] Panic stop CPUs regression Rafael J. Wysocki
2008-11-16 17:40 ` [Bug #11543] kernel panic: softlockup in tick_periodic() ??? Rafael J. Wysocki
2008-11-16 17:40 ` [Bug #11836] Scheduler on C2D CPU and latest 2.6.27 kernel Rafael J. Wysocki
2008-11-16 17:40 ` [Bug #11805] mounting XFS produces a segfault Rafael J. Wysocki
2008-11-17 14:44 ` Christoph Hellwig
2008-11-16 17:40 ` [Bug #11795] ks959-sir dongle no longer works under 2.6.27 (REGRESSION) Rafael J. Wysocki
2008-11-16 17:40 ` [Bug #11865] WOL for E100 Doesn't Work Anymore Rafael J. Wysocki
2008-11-16 17:40 ` [Bug #11843] usb hdd problems with 2.6.27.2 Rafael J. Wysocki
2008-11-16 21:37 ` Luciano Rocha
2008-11-16 17:40 ` [Bug #11876] RCU hang on cpu re-hotplug with 2.6.27rc8 Rafael J. Wysocki
2008-11-16 17:40 ` [Bug #11886] without serial console system doesn't poweroff Rafael J. Wysocki
2008-11-16 17:41 ` [Bug #12039] Regression: USB/DVB 2.6.26.8 --> 2.6.27.6 Rafael J. Wysocki
2008-11-16 17:41 ` [Bug #11983] iwlagn: wrong command queue 31, command id 0x0 Rafael J. Wysocki
2008-11-16 17:41 ` [Bug #12048] Regression in bonding between 2.6.26.8 and 2.6.27.6 Rafael J. Wysocki
-- strict thread matches above, loose matches on Subject: below --
2008-11-09 19:40 2.6.28-rc3-git6: Reported regressions 2.6.26 -> 2.6.27 Rafael J. Wysocki
2008-11-09 19:43 ` [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 Rafael J. Wysocki
2008-11-02 16:47 2.6.28-rc2-git7: Reported regressions 2.6.26 -> 2.6.27 Rafael J. Wysocki
2008-11-02 16:49 ` [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 Rafael J. Wysocki
2008-10-25 21:04 2.6.28-rc1-git1: Reported regressions 2.6.26 -> 2.6.27 Rafael J. Wysocki
2008-10-25 21:07 ` [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 Rafael J. Wysocki
2008-10-04 17:28 2.6.27-rc8-git7: Reported regressions from 2.6.26 Rafael J. Wysocki
2008-10-04 17:32 ` [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 Rafael J. Wysocki
2008-09-21 18:52 2.6.27-rc6-git6: Reported regressions from 2.6.26 Rafael J. Wysocki
2008-09-21 18:54 ` [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 Rafael J. Wysocki
2008-09-12 18:59 2.6.27-rc6-git2: Reported regressions from 2.6.26 Rafael J. Wysocki
2008-09-12 19:06 ` [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 Rafael J. Wysocki
2008-09-12 22:05 ` Christoph Lameter
2008-09-13 11:44 ` Mike Galbraith
2008-09-13 11:57 ` Mike Galbraith
2008-09-14 6:24 ` Mike Galbraith
2008-09-14 7:02 ` Mike Galbraith
2008-09-14 14:18 ` Christoph Lameter
2008-09-14 19:51 ` Mike Galbraith
2008-09-15 10:44 ` Mike Galbraith
2008-09-16 12:28 ` Mike Galbraith
2008-09-16 14:07 ` Ilpo Järvinen
2008-09-17 4:39 ` Mike Galbraith
2008-09-17 5:01 ` Mike Galbraith
2008-09-17 10:40 ` Ingo Molnar
2008-09-17 11:41 ` Mike Galbraith
2008-09-17 12:49 ` Ingo Molnar
2008-09-17 13:11 ` Mike Galbraith
2008-09-17 13:36 ` Ilpo Järvinen
2008-09-17 13:57 ` Mike Galbraith
2008-09-17 17:04 ` Ilpo Järvinen
2008-09-18 7:12 ` Mike Galbraith
2008-09-18 7:25 ` Mike Galbraith
2008-09-18 7:58 ` Ilpo Järvinen
2008-09-17 14:47 ` Eric Dumazet
2008-09-17 14:50 ` Eric Dumazet
2008-09-17 18:16 ` Mike Galbraith
2008-09-06 21:24 2.6.27-rc5-git8: Reported regressions from 2.6.26 Rafael J. Wysocki
2008-09-06 21:30 ` [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 Rafael J. Wysocki
2008-08-30 19:46 2.6.27-rc5-git2: Reported regressions from 2.6.26 Rafael J. Wysocki
2008-08-30 19:50 ` [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 Rafael J. Wysocki
2008-08-23 18:07 2.6.27-rc4-git1: Reported regressions from 2.6.26 Rafael J. Wysocki
2008-08-23 18:10 ` [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 Rafael J. Wysocki
2008-08-16 19:00 2.6.27-rc3-git3: Reported regressions from 2.6.26 Rafael J. Wysocki
2008-08-16 19:02 ` [Bug #11308] tbench regression on each kernel release from 2.6.22 -> 2.6.28 Rafael J. Wysocki
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