From: Todd Graham Lewis <tlewis@mindspring.net>
To: Bart Schaefer <schaefer@brasslantern.com>
Cc: zsh-users@math.gatech.edu
Subject: Re: rolling over high-traffic logfiles?
Date: Fri, 24 Jul 1998 19:42:35 -0400 (EDT) [thread overview]
Message-ID: <Pine.LNX.3.96.980724194149.9246P-100000@reflections.eng.mindspring.net> (raw)
In-Reply-To: <980716082633.ZM15563@candle.brasslantern.com>
On Thu, 16 Jul 1998, Bart Schaefer wrote:
> On Jul 16, 9:36am, Zefram wrote:
> } Subject: Re: rolling over high-traffic logfiles?
> }
> } mv should use rename() to atomically replace the log file, in which case
> } there is no race condition.
>
> Fair enough. There are two or more filesystem operations necessary even
> if only only system call, but I suppose that's only a possible problem
> on a multiprocessor system.
This is why kernel locking is such a big issue in SMP. The semantics don't
change; rename() is always atomic under Unix.
--
Todd Graham Lewis (800) 719-4664, x2804
******Linux****** MindSpring Enterprises tlewis@mindspring.net
next prev parent reply other threads:[~1998-07-24 23:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-07-16 3:49 Sweth Chandramouli
1998-07-16 5:08 ` Bart Schaefer
1998-07-16 8:36 ` Zefram
1998-07-16 12:46 ` Brian Harvell
1998-07-16 15:26 ` Bart Schaefer
1998-07-16 16:14 ` Zefram
1998-07-16 16:41 ` Nitin P Garg
1998-07-17 7:36 ` Jos Backus
1998-07-24 23:42 ` Todd Graham Lewis [this message]
1998-07-16 13:45 ` Duncan Sinclair
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