10-STABLE hangups frequently

Shane Ambler FreeBSD at ShaneWare.Biz
Wed Feb 3 07:58:24 UTC 2016

On 03/02/2016 05:09, Thierry Thomas wrote:
> Le mar  2 fév 16 à  8:55:46 +0100, Hajimu UMEMOTO <ume at mahoroba.org>
>   écrivait :
>> Hi,
> Hello,
>> I'm disturbed by a frequent hangup of my 10-STABLE boxes since this
>> year.  It seems occur during running the periodic daily scripts.
>> I've narrowed which commit causes this problem.  It seems r292895
>> causes it.  I see many `Resource temporarily unavailable' message just
>> before hangup occurs.
>> Any idea?
> Not exactly the same problem, but it is also occuring during periodic
> daily:
> <https://lists.freebsd.org/pipermail/freebsd-stable/2015-December/083810.html>
> and also:
> <https://lists.freebsd.org/pipermail/freebsd-stable/2015-December/083807.html>
> I'm also experiencing problems during daily periodic on a -STABLE box,
> but no kernel panics: the machine is frozen, and no login is possible, I
> have to hard reboot it.
> For the time being, I have commented out almost every entry in
> periodic.conf, and I'm trying to find the culprit.
> Regards,

Any chance you get high wired allocations?

Sometimes several times in a day I see the wired amount shown in top
rise to over 6GB (of 8GB) bringing the system to a crawl. When wired
gets over 7GB the system rarely recovers.

I am now running 10.2-STABLE r292646 on corei7 with 8GB and ZFS FS
This is my everyday desktop running xfce and a variety of gui apps.

I use a small script to allocate several GB of ram that gives the
pressure needed to start releasing some wired, provided I can get in
early enough.

Not sure how to gather any helpful info for this.

FreeBSD - the place to B...Software Developing

Shane Ambler

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