From: Jan Kara <jack@suse.cz>
To: Matthew Wilcox <willy@infradead.org>
Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
Jan Kara <jack@suse.cz>
Subject: Re: [PATCH 0/8] mm: Speedup page cache truncation
Date: Tue, 18 Feb 2020 10:25:40 +0100 [thread overview]
Message-ID: <20200218092540.GA5761@quack2.suse.cz> (raw)
In-Reply-To: <20200204142514.15826-1-jack@suse.cz>
Hello Matthew!
Any resolution on this? I'd like to move this further...
Honza
On Tue 04-02-20 15:25:06, Jan Kara wrote:
> Hello,
>
> conversion of page cache to xarray (commit 69b6c1319b6 "mm: Convert truncate to
> XArray" in particular) has regressed performance of page cache truncation
> by about 10% (see my original report here [1]). This patch series aims at
> improving the truncation to get some of that regression back.
>
> The first patch fixes a long standing bug with xas_for_each_marked() that I've
> uncovered when debugging my patches. The remaining patches then work towards
> the ability to stop clearing marks in xas_store() which improves truncation
> performance by about 6%.
>
> The patches have passed radix_tree tests in tools/testing and also fstests runs
> for ext4 & xfs.
>
> Honza
>
> [1] https://lore.kernel.org/linux-mm/20190226165628.GB24711@quack2.suse.cz
--
Jan Kara <jack@suse.com>
SUSE Labs, CR
prev parent reply other threads:[~2020-02-18 9:25 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-04 14:25 [PATCH 0/8] mm: Speedup page cache truncation Jan Kara
2020-02-04 14:25 ` [PATCH 1/8] xarray: Fix premature termination of xas_for_each_marked() Jan Kara
2020-03-12 21:45 ` Matthew Wilcox
2020-03-16 9:16 ` Jan Kara
2020-02-04 14:25 ` [PATCH 2/8] xarray: Provide xas_erase() helper Jan Kara
2020-03-14 19:54 ` Matthew Wilcox
2020-03-16 9:21 ` Jan Kara
2020-03-17 15:28 ` Matthew Wilcox
2020-04-15 16:12 ` Jan Kara
2020-02-04 14:25 ` [PATCH 3/8] xarray: Explicitely set XA_FREE_MARK in __xa_cmpxchg() Jan Kara
2020-02-05 18:45 ` Jason Gunthorpe
2020-02-06 8:03 ` Jan Kara
2020-03-17 15:12 ` Matthew Wilcox
2020-02-04 14:25 ` [PATCH 4/8] mm: Use xas_erase() in page_cache_delete_batch() Jan Kara
2020-02-04 14:25 ` [PATCH 5/8] dax: Use xas_erase() in __dax_invalidate_entry() Jan Kara
2020-02-04 14:25 ` [PATCH 6/8] idr: Use xas_erase() in ida_destroy() Jan Kara
2020-02-04 14:25 ` [PATCH 7/8] mm: Use xas_erase() in collapse_file() Jan Kara
2020-02-04 14:25 ` [PATCH 8/8] xarray: Don't clear marks in xas_store() Jan Kara
2020-02-05 18:43 ` Jason Gunthorpe
2020-02-05 21:59 ` Matthew Wilcox
2020-02-06 13:49 ` Jason Gunthorpe
2020-02-06 14:36 ` Jan Kara
2020-02-06 14:49 ` Jason Gunthorpe
2020-02-05 22:19 ` John Hubbard
2020-02-06 2:21 ` Matthew Wilcox
2020-02-06 3:48 ` John Hubbard
2020-02-06 4:28 ` Matthew Wilcox
2020-02-06 4:37 ` John Hubbard
2020-02-06 8:36 ` Jan Kara
2020-02-06 8:04 ` Jan Kara
2020-02-06 14:40 ` [PATCH 0/8] mm: Speedup page cache truncation David Sterba
2020-02-18 9:25 ` Jan Kara [this message]
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