Date: Wed, 9 Aug 2017 16:45:33 +0300 From: Gleb Popov <6yearold@gmail.com> To: freebsd-hackers <freebsd-hackers@freebsd.org> Subject: Re: Freebsd 11.0 - system freeze on intensive I/O Message-ID: <CALH631mEEcUwceh1UYhpF664SoEA4P%2BU87VEhrY-vnZrrQ%2Bw8g@mail.gmail.com> In-Reply-To: <598ADB65.8060701@grosbein.net> References: <CAD9pFYAAy8jKcABNTun-Y3knrbUreQ7q1-CCj=323HgLMC5e6g@mail.gmail.com> <598ADB65.8060701@grosbein.net>
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On Wed, Aug 9, 2017 at 12:52 PM, Eugene Grosbein <eugen@grosbein.net> wrote= : > 09.08.2017 14:11, Gautam =D0=BF=D0=B8=D1=88=D0=B5=D1=82: > > Hi, > > > > I raised this topic on freebsd-questions where I suspect a bug caused d= ue > > to swapfile usage on FreeBSD. > > > > You could read details in the below thread, but summary is that with > using > > a swapfile (not a swap partition) the system freezes on some single > process > > intensive I/O. This is 100% reproducible. > > > > http://marc.info/?l=3Dfreebsd-questions&m=3D150088763825675&w=3D2 > > > > I raised a PR - 220971 ; but there are no backtraces / logs etc. that > could > > possibly help. > > > > I would like to help narrow this down, but do not know how. Any > suggestions > > on how to debug a system freeze and what I need to do ? I could then tr= y > to > > reproduce this and collect the needed information - traces etc. > > Swapfile is definitely broken in supported FreeBSD releases, it hangs the > system. > The only known workaround (to me) is not using it. > > > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org= " > I'm using swap on ZFS, and still see the problem, so this might not be tied to swapfile.
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