From: Thomas Knauth <thomas.knauth@gmx.de>
To: Artem Bityutskiy <dedekind1@gmail.com>
Cc: David Rientjes <rientjes@google.com>,
Maksym Planeta <mcsim.planeta@gmail.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] sysctl: Add a feature to drop caches selectively
Date: Wed, 25 Jun 2014 15:23:42 +0200 [thread overview]
Message-ID: <CABhLV02COaH=qP=Snd7YJtcVOvm9NTmY58QuiTQoPZxH3NemPQ@mail.gmail.com> (raw)
In-Reply-To: <1403690184.20275.11.camel@sauron.fi.intel.com>
On Wed, Jun 25, 2014 at 11:56 AM, Artem Bityutskiy <dedekind1@gmail.com> wrote:
> Thanks for the answer, although you forgot to comment on the question
> about possibly extending the new interface to work with file ranges in
> the future. For example, I have a 2 TiB file, and I am only interested
> in dropping caches for the first couple of gigabytes. Would I extend
> your interface, or would I come up with another one?
Ah, didn't quite understand what was meant with file ranges. Again, we
had not considered this so far. I guess you could make a distinction
between directories and files here. If the path points to a file, you
can have an optional argument indicating the range of bytes you would
like to drop. Something like
echo "my-file 0-1000,8000-1000" > /proc/sys/vm/sdrop_cache
If this is desirable, we can add it to the patch.
next prev parent reply other threads:[~2014-06-25 13:23 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-24 16:10 [PATCH] sysctl: Add a feature to drop caches selectively Maksym Planeta
2014-06-24 21:59 ` David Rientjes
2014-06-25 6:25 ` Artem Bityutskiy
2014-06-25 8:25 ` Thomas Knauth
2014-06-25 9:56 ` Artem Bityutskiy
2014-06-25 13:23 ` Thomas Knauth [this message]
2014-06-25 13:30 ` Artem Bityutskiy
2014-06-25 13:42 ` Artem Bityutskiy
2014-06-26 9:30 ` Maksym Planeta
2014-06-25 10:03 ` Artem Bityutskiy
2014-06-25 13:19 ` Thomas Knauth
2014-06-25 22:15 ` Pavel Machek
2014-06-26 1:06 ` Dave Chinner
2014-06-26 6:13 ` Artem Bityutskiy
2014-06-26 10:36 ` Bernd Schubert
2014-06-26 11:31 ` Artem Bityutskiy
2014-06-26 11:57 ` Lukáš Czerner
2014-06-26 12:10 ` Bernd Schubert
2014-06-27 2:55 ` Dave Chinner
2014-06-27 8:58 ` Bernd Schubert
2014-06-27 8:41 ` Matthias Schniedermeyer
2014-06-27 9:04 ` Lukáš Czerner
2014-06-27 9:08 ` Artem Bityutskiy
2014-06-27 9:09 ` Bityutskiy, Artem
2014-06-27 2:48 ` Dave Chinner
[not found] <CACVxJT_6sp=KDy=jCNBypYapKv_59W8LxFU4OiJEm6gt_SuZKg@mail.gmail.com>
2014-06-25 11:21 ` Alexey Dobriyan
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