linux-kernel - Re: [PATCH] slub: limit count of partial slabs scanned to gather statistics

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Message-ID: <alpine.DEB.2.22.394.2005080315290.56560@www.lameter.com>
Date:   Fri, 8 May 2020 03:18:22 +0000 (UTC)
From:   Christopher Lameter <cl@...ux.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
cc:     Konstantin Khlebnikov <khlebnikov@...dex-team.ru>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: [PATCH] slub: limit count of partial slabs scanned to gather
 statistics

On Mon, 4 May 2020, Andrew Morton wrote:

> But I guess it's better than nothing at all, unless there are
> alternative ideas?

I its highly unsusual to have such large partial lists. In a typical case
allocations whould reduce the size of the lists. 1000s? That is scary.

Are there inodes or dentries by chance?

The defrag stuff that I had been trying to do for a long time would solve
that issue but then objects would need to be made movable....