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From: jiangyiwen <jiangyiwen@huawei.com>
To: ocfs2-devel@oss.oracle.com
Subject: [Ocfs2-devel] [RFC] ocfs2: a method to prevent lock on the blocked queue is starved.
Date: Thu, 27 Aug 2015 20:11:21 +0800	[thread overview]
Message-ID: <55DEFE69.2060909@huawei.com> (raw)

In dlm_shuffle_lists, if there are conversions still blocked on the
converting queue all the time, the blocked locks on the blocked queue
can never be processed, so the locks on the blocked queue will be
starved.

So I have an idea to solve this problem: To switch the priority between
the converting queue and blocked queue, i.e. process the locks on the
blocked queue first. In this way, the lock on the blocked queue will
be processed and it will not enter the blocked queue until the
lockres is purged. so the scenario above will be solved.

Anyone has better ideas or advices?

Thanks,
Yiwen Jiang

             reply	other threads:[~2015-08-27 12:11 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-27 12:11 jiangyiwen [this message]
2015-09-25  1:53 ` [Ocfs2-devel] [RFC] ocfs2: a method to prevent lock on the blocked queue is starved Joseph Qi

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