From: Peter Zijlstra <peterz@infradead.org>
To: riel@redhat.com
Cc: linux-kernel@vger.kernel.org, mgorman@suse.de,
chegu_vinod@hp.com, mingo@kernel.org, efault@gmx.de,
vincent.guittot@linaro.org
Subject: Re: [PATCH RFC 1/5] sched,numa: build table of node hop distance
Date: Sun, 12 Oct 2014 15:17:14 +0200 [thread overview]
Message-ID: <20141012131714.GE3015@worktop> (raw)
In-Reply-To: <1412797050-8903-2-git-send-email-riel@redhat.com>
On Wed, Oct 08, 2014 at 03:37:26PM -0400, riel@redhat.com wrote:
> + sched_domains_numa_hops = kzalloc(sizeof(int) * nr_node_ids * nr_node_ids, GFP_KERNEL);
> + if (!sched_domains_numa_hops)
> + return;
That's potentially a _BIG_ table (1M for a 512 node system).
The node_distance has magic allocations and is of u8 size, is there any
way we can re-use node_distance and avoid a second O(n^2) allocation?
next prev parent reply other threads:[~2014-10-12 13:17 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-08 19:37 [PATCH RFC 0/5] sched,numa: task placement with complex NUMA topologies riel
2014-10-08 19:37 ` [PATCH RFC 1/5] sched,numa: build table of node hop distance riel
2014-10-12 13:17 ` Peter Zijlstra [this message]
2014-10-12 13:28 ` Rik van Riel
2014-10-14 6:47 ` Peter Zijlstra
2014-10-14 7:49 ` Rik van Riel
2014-10-08 19:37 ` [PATCH RFC 2/5] sched,numa: classify the NUMA topology of a system riel
2014-10-12 14:30 ` Peter Zijlstra
2014-10-13 7:12 ` Rik van Riel
2014-10-08 19:37 ` [PATCH RFC 3/5] sched,numa: preparations for complex topology placement riel
2014-10-12 14:37 ` Peter Zijlstra
2014-10-13 7:12 ` Rik van Riel
2014-10-08 19:37 ` [PATCH RFC 4/5] sched,numa: calculate node scores in complex NUMA topologies riel
2014-10-12 14:53 ` Peter Zijlstra
2014-10-13 7:15 ` Rik van Riel
2014-10-08 19:37 ` [PATCH RFC 5/5] sched,numa: find the preferred nid with complex NUMA topology riel
2014-10-12 14:56 ` Peter Zijlstra
2014-10-13 7:17 ` Rik van Riel
[not found] ` <4168C988EBDF2141B4E0B6475B6A73D126F58E4F@G6W2504.americas.hpqcorp.net>
[not found] ` <54367446.3020603@redhat.com>
2014-10-10 18:44 ` [PATCH RFC 0/5] sched,numa: task placement with complex NUMA topologies Vinod, Chegu
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