From: Jack Steiner <steiner@sgi.com>
To: "Paul E. McKenney" <paulmck@us.ibm.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: RCU scaling on large systems
Date: Fri, 7 May 2004 17:06:54 -0500 [thread overview]
Message-ID: <20040507220654.GA32208@sgi.com> (raw)
In-Reply-To: <20040507205048.GB1246@us.ibm.com>
On Fri, May 07, 2004 at 01:50:48PM -0700, Paul E. McKenney wrote:
> On Mon, May 03, 2004 at 01:40:06PM -0500, Jack Steiner wrote:
> > Paul -
> >
>
> Hmmm... I took a quick glance, but don't see why an "ls" would
> cause RCU to be invoked. This should only happen if a dentry is
> ejected from dcache.
>
> Any enlightenment appreciated!
>
The calls to RCU are coming from here:
[11]kdb> bt
Stack traceback for pid 3553
0xe00002b007230000 3553 3139 1 11 R 0xe00002b0072304f0 *ls
0xa0000001000feee0 call_rcu
0xa0000001001a3b20 d_free+0x80
0xa0000001001a3ec0 dput+0x340
0xa00000010016bcd0 __fput+0x210
0xa00000010016baa0 fput+0x40
0xa000000100168760 filp_close+0xc0
0xa000000100168960 sys_close+0x180
0xa000000100011be0 ia64_ret_from_syscall
I see this same backtrace from numerous processes.
--
Thanks
Jack Steiner (steiner@sgi.com) 651-683-5302
Principal Engineer SGI - Silicon Graphics, Inc.
next prev parent reply other threads:[~2004-05-07 22:07 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-01 12:08 RCU scaling on large systems Jack Steiner
2004-05-01 21:17 ` William Lee Irwin III
2004-05-01 22:35 ` William Lee Irwin III
2004-05-02 1:38 ` Jack Steiner
2004-05-07 17:53 ` Andrea Arcangeli
2004-05-07 18:17 ` William Lee Irwin III
2004-05-07 19:59 ` Andrea Arcangeli
2004-05-07 20:49 ` Jack Steiner
2004-05-02 18:28 ` Paul E. McKenney
2004-05-03 16:39 ` Jesse Barnes
2004-05-03 20:04 ` Paul E. McKenney
2004-05-03 18:40 ` Jack Steiner
2004-05-07 20:50 ` Paul E. McKenney
2004-05-07 22:06 ` Jack Steiner [this message]
2004-05-07 23:32 ` Andrew Morton
2004-05-08 4:55 ` Jack Steiner
2004-05-17 21:18 ` Andrea Arcangeli
2004-05-17 21:42 ` Andrew Morton
2004-05-17 23:50 ` Andrea Arcangeli
2004-05-18 13:33 ` Jack Steiner
2004-05-18 23:13 ` Matt Mackall
-- strict thread matches above, loose matches on Subject: below --
2004-05-20 11:36 Manfred Spraul
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