Date: Sat, 12 Aug 2017 10:47:43 +0530 From: Gautam <list@execve.net> To: freebsd-hackers <freebsd-hackers@freebsd.org> Cc: "gautam@execve.net" <gautam@execve.net> Subject: Re: Freebsd 11.0 - system freeze on intensive I/O Message-ID: <CAD9pFYAyLpffrFUPOJya%2BG5cvkMNduY-j4M8PED9vS21RaDVOA@mail.gmail.com> In-Reply-To: <CAD9pFYCxBO18GmRE6=-i==j3puJqgQ7bvPk7dmP%2B=T2hgbaAcw@mail.gmail.com> References: <CAD9pFYAAy8jKcABNTun-Y3knrbUreQ7q1-CCj=323HgLMC5e6g@mail.gmail.com> <598ADB65.8060701@grosbein.net> <CALH631mEEcUwceh1UYhpF664SoEA4P%2BU87VEhrY-vnZrrQ%2Bw8g@mail.gmail.com> <B0B159BA-3C4A-4A5C-B3EB-CBF2CF251274@dsl-only.net> <CAD9pFYCxBO18GmRE6=-i==j3puJqgQ7bvPk7dmP%2B=T2hgbaAcw@mail.gmail.com>
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Hi, On Wed, Aug 9, 2017 at 10:23 PM, Gautam <list@execve.net> wrote: > Hi, > > I just want to comment, that when I tested it there > was absolutely no need for any swap usage. I tried the test on a laptop > with 8GB RAM and > did it from the console mode. But it does seem that there might be some > request (read/write) to swap which > =E2=80=8Bcauses a lock up to the system.=E2=80=8B > > =E2=80=8BOne update on this one. I installed a custom stable/11 kernel an= d world (sched =3D 4BSD was the only change), and the problem is no longer seen. From my untrained eyes, it looks like some kind of swap request starvation causing a hang when ULE is in use.=E2=80=8B =E2=80=8BThanks, Gautam =E2=80=8B
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