Date: Wed, 9 Aug 2017 12:41:02 +0530 From: Gautam <list@execve.net> To: freebsd-hackers@freebsd.org Subject: Freebsd 11.0 - system freeze on intensive I/O Message-ID: <CAD9pFYAAy8jKcABNTun-Y3knrbUreQ7q1-CCj=323HgLMC5e6g@mail.gmail.com>
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Hi, I raised this topic on freebsd-questions where I suspect a bug caused due 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=freebsd-questions&m=150088763825675&w=2 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 try to reproduce this and collect the needed information - traces etc. Thanks, Gautam
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