From: Dipankar Sarma <dipankar@in.ibm.com>
To: Ravikiran G Thirumalai <kiran@in.ibm.com>
Cc: Rusty Russell <rusty@au1.ibm.com>,
linux-kernel@vger.kernel.org, akpm@zip.com.au
Subject: Re: [PATCH] kmalloc_percpu
Date: Tue, 6 May 2003 15:08:56 +0530 [thread overview]
Message-ID: <20030506093856.GA9875@in.ibm.com> (raw)
In-Reply-To: <20030506093411.GB29352@in.ibm.com>
On Tue, May 06, 2003 at 03:04:11PM +0530, Ravikiran G Thirumalai wrote:
> > Doesn't break with sparce CPU #s, but yes, it is inefficient.
> >
>
> If you don't reduce NR_CPUS with CONFIG_NR_CPUS, you waste space (32 bit folks
> won't like it) and if you say change CONFIG_NR_CPUS to 2,
> and we have cpuid 4 on a 2 way you break right? If we have to address these
> issues at all, why can't we use the simpler kmalloc_percpu patch
> which I posted in the morning and avoid so much complexity and arch
> dependency?
We can have something like that for !CONFIG_NUMA and a NUMA-aware
allocator with additional dereferencing cost for CONFIG_NUMA.
Hopefully gains from numa-awareness will more than offset
dereferencing costs.
Thanks
Dipankar
next prev parent reply other threads:[~2003-05-06 9:23 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-05 8:08 [PATCH] kmalloc_percpu Rusty Russell
2003-05-05 8:47 ` Andrew Morton
2003-05-06 0:47 ` Rusty Russell
2003-05-06 1:52 ` Andrew Morton
2003-05-06 2:11 ` David S. Miller
2003-05-06 4:08 ` Rusty Russell
2003-05-06 3:40 ` David S. Miller
2003-05-06 5:02 ` Andrew Morton
2003-05-06 4:16 ` David S. Miller
2003-05-06 5:48 ` Andrew Morton
2003-05-06 5:35 ` David S. Miller
2003-05-06 6:55 ` Andrew Morton
2003-05-06 5:57 ` David S. Miller
2003-05-06 7:22 ` Andrew Morton
2003-05-06 6:15 ` David S. Miller
2003-05-06 7:34 ` Andrew Morton
2003-05-06 8:42 ` William Lee Irwin III
2003-05-06 14:38 ` Martin J. Bligh
2003-05-06 7:20 ` Dipankar Sarma
2003-05-06 8:28 ` Rusty Russell
2003-05-06 8:47 ` Andrew Morton
2003-05-07 1:57 ` Rusty Russell
2003-05-07 2:41 ` William Lee Irwin III
2003-05-07 4:03 ` Paul Mackerras
2003-05-07 4:22 ` William Lee Irwin III
2003-05-07 4:56 ` Paul Mackerras
2003-05-07 5:19 ` William Lee Irwin III
2003-05-07 4:10 ` Martin J. Bligh
2003-05-07 12:13 ` William Lee Irwin III
2003-05-07 4:15 ` Rusty Russell
2003-05-07 5:37 ` Andrew Morton
2003-05-08 0:53 ` Rusty Russell
2003-05-06 14:41 ` Martin J. Bligh
2003-05-06 6:42 ` Andrew Morton
2003-05-06 5:39 ` David S. Miller
2003-05-06 6:57 ` Andrew Morton
2003-05-06 7:25 ` Jens Axboe
2003-05-06 10:41 ` Ingo Oeser
2003-05-06 16:05 ` Bryan O'Sullivan
2003-05-06 8:06 ` Rusty Russell
2003-05-06 5:03 ` Dipankar Sarma
2003-05-06 4:28 ` Andrew Morton
2003-05-06 3:37 ` David S. Miller
2003-05-06 4:11 ` Rusty Russell
2003-05-06 5:07 ` Ravikiran G Thirumalai
2003-05-06 8:03 ` Rusty Russell
2003-05-06 9:23 ` David S. Miller
2003-05-06 9:34 ` Ravikiran G Thirumalai
2003-05-06 9:38 ` Dipankar Sarma [this message]
2003-05-07 2:14 ` Rusty Russell
2003-05-07 5:51 ` Ravikiran G Thirumalai
2003-05-07 6:16 ` Rusty Russell
2003-05-08 7:42 ` Ravikiran G Thirumalai
2003-05-08 7:47 ` Rusty Russell
-- strict thread matches above, loose matches on Subject: below --
2002-10-31 16:06 [patch] kmalloc_percpu Ravikiran G Thirumalai
2002-11-01 8:33 ` Rusty Russell
2002-11-05 16:00 ` Dipankar Sarma
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