[Gluster-devel] post 3.1 xlator/io-threads instability on NetBSD (was: NULL frame->conn cause a crash)

Anand Avati anand.avati at gmail.com
Fri Jul 8 13:13:57 UTC 2011

I'm not sure how good/efficient the pthread implementation in NetBSD is.
Also, do you know if there are any NetBSD specifics about using
pthread_spinlock() APIs on it? Lot of the issues you have previously
described can occur if there is a broken implementation of pthread spinlocks
(which seems to get masked without io-threads)


On Wed, Jul 6, 2011 at 8:41 PM, Emmanuel Dreyfus <manu at netbsd.org> wrote:

> On Tue, Jul 05, 2011 at 09:32:23AM +0000, Emmanuel Dreyfus wrote:
> > Let us forget my previous batch of crashes that were with 3.2.1. This
> > one iw with today's code from git:
> I made some progress on that problem. Removing the io-threads xlator
> fixes the stability problem. It also greatly improves performances
> while the server load decrease from 14 to 3 for the same operations.
> It seems there have been some refactoring of xlatorx/io-threads since 3.1.
> It does not use sem_timedwait() anymore, that was replaced by
> pthread_cond_timedwait().
> Anyone has ideas here?
> --
> Emmanuel Dreyfus
> manu at netbsd.org
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> Gluster-devel mailing list
> Gluster-devel at nongnu.org
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