From: Rik van Riel <riel@redhat.com>
To: Kyle Moffett <kyle@moffetthome.net>
Cc: Lars Ellenberg <lars.ellenberg@linbit.com>,
Philipp Reisner <philipp.reisner@linbit.com>,
linux-kernel@vger.kernel.org, Jens Axboe <jens.axboe@oracle.com>,
Greg KH <gregkh@suse.de>, Neil Brown <neilb@suse.de>,
James Bottomley <James.Bottomley@hansenpartnership.com>,
Sam Ravnborg <sam@ravnborg.org>, Dave Jones <davej@redhat.com>,
Nikanth Karthikesan <knikanth@suse.de>,
Lars Marowsky-Bree <lmb@suse.de>,
"Nicholas A. Bellinger" <nab@linux-iscsi.org>,
Bart Van Assche <bart.vanassche@gmail.com>
Subject: Re: [PATCH 02/16] DRBD: lru_cache
Date: Mon, 04 May 2009 12:12:07 -0400 [thread overview]
Message-ID: <49FF13D7.8070606@redhat.com> (raw)
In-Reply-To: <f73f7ab80905031801n1e5ed6b6h84772baabda5f71e@mail.gmail.com>
Kyle Moffett wrote:
> On Sun, May 3, 2009 at 8:48 PM, Kyle Moffett <kyle@moffetthome.net> wrote:
>> There are a couple trivial tunables you can apply to the model I
>> provided to dramatically change the effect of memory pressure on the
>> LRU:
>>
>> [...]
>>
>
> Ooh, I forgot to mention another biggie: There's a way to allocate a
> reserve pool of memory (I don't remember the exact API, sorry), which
> can be attached to a specific kmem_cache to be used by processes
> attempting writeout. This would allow you to allocate more in-use
> elements to make forward progress, even if all of your existing
> elements are already in-use.
Lars,
is using a mempool for allocation, in combination with a
shrinker callback for freeing older entries an option for
DRBD?
It looks like that could get rid of a fair amount of custom infrastructure.
--
All rights reversed.
next prev parent reply other threads:[~2009-05-04 16:12 UTC|newest]
Thread overview: 85+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-30 11:26 [PATCH 00/16] DRBD: a block device for HA clusters Philipp Reisner
2009-04-30 11:26 ` [PATCH 01/16] DRBD: major.h Philipp Reisner
2009-04-30 11:26 ` [PATCH 02/16] DRBD: lru_cache Philipp Reisner
2009-04-30 11:26 ` [PATCH 03/16] DRBD: activity_log Philipp Reisner
2009-04-30 11:26 ` [PATCH 04/16] DRBD: bitmap Philipp Reisner
2009-04-30 11:26 ` [PATCH 05/16] DRBD: request Philipp Reisner
2009-04-30 11:26 ` [PATCH 06/16] DRBD: userspace_interface Philipp Reisner
2009-04-30 11:26 ` [PATCH 07/16] DRBD: internal_data_structures Philipp Reisner
2009-04-30 11:26 ` [PATCH 08/16] DRBD: main Philipp Reisner
2009-04-30 11:26 ` [PATCH 09/16] DRBD: receiver Philipp Reisner
2009-04-30 11:26 ` [PATCH 10/16] DRBD: proc Philipp Reisner
2009-04-30 11:26 ` [PATCH 11/16] DRBD: worker Philipp Reisner
2009-04-30 11:26 ` [PATCH 12/16] DRBD: variable_length_integer_encoding Philipp Reisner
2009-04-30 11:26 ` [PATCH 13/16] DRBD: misc Philipp Reisner
2009-04-30 11:26 ` [PATCH 14/16] DRBD: tracepoint_probes Philipp Reisner
2009-04-30 11:26 ` [PATCH 15/16] DRBD: documentation Philipp Reisner
2009-04-30 11:26 ` [PATCH 16/16] DRBD: final Philipp Reisner
2009-05-02 15:45 ` [PATCH 12/16] DRBD: variable_length_integer_encoding James Bottomley
2009-05-02 17:29 ` Lars Ellenberg
2009-05-02 15:44 ` [PATCH 10/16] DRBD: proc James Bottomley
2009-05-02 20:23 ` Lars Ellenberg
2009-05-02 15:41 ` [PATCH 04/16] DRBD: bitmap James Bottomley
2009-05-02 17:28 ` Lars Ellenberg
2009-05-03 5:21 ` Neil Brown
2009-05-03 7:38 ` Lars Ellenberg
2009-05-05 17:48 ` Lars Marowsky-Bree
2009-05-05 17:51 ` James Bottomley
2009-05-05 22:26 ` Neil Brown
2009-05-01 9:01 ` [PATCH 03/16] DRBD: activity_log Andrew Morton
2009-05-02 17:00 ` Lars Ellenberg
2009-05-01 8:59 ` [PATCH 02/16] DRBD: lru_cache Andrew Morton
2009-05-02 15:26 ` Lars Ellenberg
2009-05-02 17:58 ` Andrew Morton
2009-05-02 18:13 ` Lars Ellenberg
2009-05-02 18:26 ` Andrew Morton
2009-05-02 19:39 ` Lars Ellenberg
2009-05-02 23:51 ` Kyle Moffett
2009-05-03 6:27 ` Lars Ellenberg
2009-05-03 14:06 ` Kyle Moffett
2009-05-03 22:48 ` Lars Ellenberg
2009-05-04 0:48 ` Kyle Moffett
2009-05-04 1:01 ` Kyle Moffett
2009-05-04 16:12 ` Rik van Riel [this message]
2009-05-04 16:15 ` Lars Ellenberg
2009-05-01 8:59 ` [PATCH 01/16] DRBD: major.h Andrew Morton
2009-05-01 8:59 ` [PATCH 00/16] DRBD: a block device for HA clusters Andrew Morton
2009-05-01 11:15 ` Lars Marowsky-Bree
2009-05-01 13:14 ` Dave Jones
2009-05-01 19:14 ` Andrew Morton
2009-05-05 4:05 ` Christian Kujau
2009-05-02 7:33 ` Bart Van Assche
2009-05-03 5:36 ` Willy Tarreau
2009-05-03 5:40 ` david
2009-05-03 14:21 ` James Bottomley
2009-05-03 14:36 ` david
2009-05-03 14:45 ` James Bottomley
2009-05-03 14:56 ` david
2009-05-03 15:09 ` James Bottomley
2009-05-03 15:22 ` david
2009-05-03 15:38 ` James Bottomley
2009-05-03 15:48 ` david
2009-05-03 16:02 ` James Bottomley
2009-05-03 16:13 ` david
2009-05-04 8:28 ` Philipp Reisner
2009-05-04 17:24 ` James Bottomley
2009-05-05 8:21 ` Philipp Reisner
2009-05-05 14:09 ` James Bottomley
2009-05-05 15:56 ` Philipp Reisner
2009-05-05 17:05 ` James Bottomley
2009-05-05 21:45 ` Philipp Reisner
2009-05-05 21:53 ` James Bottomley
2009-05-06 8:17 ` Philipp Reisner
2009-05-05 15:03 ` Bart Van Assche
2009-05-05 15:57 ` Philipp Reisner
2009-05-05 17:38 ` Lars Marowsky-Bree
2009-05-03 10:06 ` Philipp Reisner
2009-05-03 10:15 ` Thomas Backlund
2009-05-03 5:53 ` Neil Brown
2009-05-03 6:24 ` david
2009-05-03 8:29 ` Lars Ellenberg
2009-05-03 11:00 ` Neil Brown
2009-05-03 21:32 ` Lars Ellenberg
2009-05-04 16:12 ` Lars Marowsky-Bree
2009-05-05 22:08 ` Lars Ellenberg
-- strict thread matches above, loose matches on Subject: below --
2009-05-15 12:10 Philipp Reisner
2009-05-15 12:10 ` [PATCH 01/16] DRBD: major.h Philipp Reisner
2009-05-15 12:10 ` [PATCH 02/16] DRBD: lru_cache Philipp Reisner
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