From: Christoph Lameter <cl@linux-foundation.org>
To: Alexey Starikovskiy <aystarik@gmail.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>,
Nick Piggin <npiggin@suse.de>,
Linux Memory Management List <linux-mm@kvack.org>,
linux-acpi@vger.kernel.org, lenb@kernel.org
Subject: Re: [patch][rfc] acpi: do not use kmem caches
Date: Mon, 1 Dec 2008 12:09:33 -0600 (CST) [thread overview]
Message-ID: <Pine.LNX.4.64.0812011207400.16919@quilx.com> (raw)
In-Reply-To: <493420B2.8050907@gmail.com>
On Mon, 1 Dec 2008, Alexey Starikovskiy wrote:
> > Though I suspect this situation could be improved by avoiding those
> > fairly big unions ACPI does (like union acpi_operand_object).
> >
> No, last time I checked, operand may get down to 16 bytes in 32-bit case --
> save byte by having 3 types of operands... and making 2 more caches :)
SLAB has a minimum allocation size of 32 bytes so it would not make a
difference there.
SLUB can go down to 8 bytes which would enable you to save more. Adding
new caches most of the time simply lead to incrementing a counter in
a similar kmem_cache structure.
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next prev parent reply other threads:[~2008-12-01 18:09 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-01 8:31 Nick Piggin
2008-12-01 11:18 ` Pekka Enberg
2008-12-01 12:00 ` Nick Piggin
2008-12-01 13:12 ` Alexey Starikovskiy
2008-12-01 13:36 ` Nick Piggin
2008-12-01 14:14 ` Alexey Starikovskiy
2008-12-01 16:32 ` Nick Piggin
2008-12-01 17:18 ` Christoph Hellwig
2008-12-01 17:32 ` Alexey Starikovskiy
2008-12-01 13:37 ` Pekka Enberg
2008-12-01 14:02 ` Alexey Starikovskiy
2008-12-01 16:14 ` Nick Piggin
2008-12-01 16:45 ` Alexey Starikovskiy
2008-12-01 16:58 ` Nick Piggin
2008-12-01 17:20 ` Moore, Robert
2008-12-01 17:30 ` Andi Kleen
2008-12-01 17:32 ` Moore, Robert
2008-12-01 17:20 ` Christoph Hellwig
2008-12-01 17:49 ` Alexey Starikovskiy
2008-12-01 17:53 ` Len Brown
2008-12-01 18:10 ` Nick Piggin
2008-12-31 22:04 ` Len Brown
2009-01-05 4:14 ` Nick Piggin
2009-01-05 5:43 ` Skywing
2009-01-05 6:55 ` Nick Piggin
2008-12-01 14:32 ` Christoph Lameter
2008-12-01 14:48 ` Alexey Starikovskiy
2008-12-01 16:20 ` Nick Piggin
2008-12-01 17:04 ` Alexey Starikovskiy
2008-12-01 17:12 ` Nick Piggin
2008-12-01 17:25 ` Pekka Enberg
2008-12-01 17:32 ` Pekka Enberg
2008-12-01 17:36 ` Alexey Starikovskiy
2008-12-01 17:48 ` Pekka Enberg
2008-12-01 18:09 ` Christoph Lameter [this message]
2008-12-01 17:43 ` Alexey Starikovskiy
2008-12-01 17:31 ` Len Brown
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