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Date: Thu, 5 Jul 2012 00:48:43 +0900
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Subject: Re: [PATCH 1/3 v2] slub: prefetch next freelist pointer in __slab_alloc()
From: JoonSoo Kim <js1304@gmail.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Pekka Enberg <penberg@kernel.org>,
        Christoph Lameter <cl@linux-foundation.org>,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        David Rientjes <rientjes@google.com>
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2012/7/5 Eric Dumazet <eric.dumazet@gmail.com>:
> Its the slow path. I am not convinced its useful on real workloads (not
> a benchmark)
>
> I mean, if a workload hits badly slow path, some more important work
> should be done to avoid this at a higher level.
>

In hackbench test, fast path allocation is about to 93%.
Is it insufficient?

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Date: Thu, 5 Jul 2012 00:48:43 +0900
Message-ID: <CAAmzW4P8itKqMLLUqAAtT7GakKecCixd0PV8y0LgFOL+=g_tZQ@mail.gmail.com>
Subject: Re: [PATCH 1/3 v2] slub: prefetch next freelist pointer in __slab_alloc()
From: JoonSoo Kim <js1304@gmail.com>
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To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Pekka Enberg <penberg@kernel.org>, Christoph Lameter <cl@linux-foundation.org>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, David Rientjes <rientjes@google.com>

2012/7/5 Eric Dumazet <eric.dumazet@gmail.com>:
> Its the slow path. I am not convinced its useful on real workloads (not
> a benchmark)
>
> I mean, if a workload hits badly slow path, some more important work
> should be done to avoid this at a higher level.
>

In hackbench test, fast path allocation is about to 93%.
Is it insufficient?

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