From: Andrea Arcangeli <andrea@novell.com>
To: Andrew Morton <akpm@osdl.org>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>, linux-kernel@vger.kernel.org
Subject: Re: ZONE_PADDING wastes 4 bytes of the new cacheline
Date: Fri, 22 Oct 2004 19:07:13 +0200 [thread overview]
Message-ID: <20041022170713.GJ14325@dualathlon.random> (raw)
In-Reply-To: <20041021202656.08788551.akpm@osdl.org>
On Thu, Oct 21, 2004 at 08:26:56PM -0700, Andrew Morton wrote:
> Well yes, I spose the answer as always is "show me a testcase". But the
I already gave you a testcase ages ago. Pretty simple. Get your hands on
a 2G box. boot, swapoff -a, load 1G in pagecache. malloc 1G, bzero 1G,
then open some dozen thousand files until the machine deadlocks despite
1G is perfcetly freeable in highmem.
> Any halfway setting will screw everyone.
this stuff run in production for 2 years at least, if anyone would be
screwed I'd already know. The only thing I know is that I've oom
deadlocks in my queue of bugs, and we'll see if this fixes them, it's
hard to tell since I don't know how much lowmem is pinned by highmem
capable allocs (like pagetables!).
next prev parent reply other threads:[~2004-10-22 17:25 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-21 1:17 ZONE_PADDING wastes 4 bytes of the new cacheline Andrea Arcangeli
2004-10-21 3:10 ` Nick Piggin
2004-10-21 4:36 ` Andrew Morton
2004-10-21 4:53 ` Nick Piggin
2004-10-21 10:51 ` Mikael Pettersson
2004-10-21 12:45 ` Andrea Arcangeli
2004-10-21 18:54 ` Adam Heath
2004-10-21 20:21 ` DaMouse
2004-10-21 21:24 ` Jon Masters
2004-10-22 10:09 ` DaMouse
2004-10-21 22:26 ` Nick Piggin
2004-10-21 22:45 ` Andrea Arcangeli
2004-10-22 0:34 ` Nick Piggin
2004-10-22 1:10 ` Andrea Arcangeli
2004-10-22 1:26 ` Andrew Morton
2004-10-22 2:55 ` Jesse Barnes
2004-10-22 3:38 ` Nick Piggin
2004-10-22 3:49 ` Jesse Barnes
2004-10-22 17:15 ` Andrea Arcangeli
2004-10-22 3:09 ` Nick Piggin
2004-10-22 3:26 ` Andrew Morton
2004-10-22 3:35 ` Nick Piggin
2004-10-22 17:13 ` Andrea Arcangeli
2004-10-22 17:07 ` Andrea Arcangeli [this message]
2004-10-22 15:50 ` Andrea Arcangeli
2004-10-22 3:02 ` Nick Piggin
2004-10-22 16:58 ` Andrea Arcangeli
2004-10-23 4:33 ` Nick Piggin
2004-10-23 9:59 ` Andrea Arcangeli
2004-10-23 10:22 ` Nick Piggin
2004-10-23 11:03 ` Andrea Arcangeli
2004-10-23 16:28 ` Nick Piggin
2004-10-25 12:44 ` Andrea Arcangeli
2004-10-25 12:49 ` Nick Piggin
2004-10-25 13:51 ` Andrea Arcangeli
2004-10-25 20:09 ` Robert White
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