Date: Sun, 31 May 2020 02:32:21 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 246886] Nginx + FUSE causes VM stall Message-ID: <bug-246886-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D246886 Bug ID: 246886 Summary: Nginx + FUSE causes VM stall Product: Base System Version: 12.1-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: nishida@asusa.net I'm developing a distributed file system using FUSE on FreeBSD 12.1-RELEASE= and STABLE. However, when Nginx is accessing the FUSE mounted filesystem, Nginx stalls with 'grbmaw' state. grbmaw seems to be used by vm_page_busy_sleep() and it seems to never awake again for some reason. My FUSE program is just waiting for the next command at fuse_session_loop_m= t(). I have tested with 4 different kinds of hardware and get this problem with = 3 of them. The biggest difference between those 3 and the remaining 1 is the NIC; the 3 are wired and the rest is wireless. I guess this happens when Nginx is rushed to access or send the data. Once it happens, I need to reboot the device but it does not always shut do= wn. It is easily reproducible. I think the problem is fuse.ko related and would appreciate it if anybody c= ould fix it. Thank you. --=20 You are receiving this mail because: You are the assignee for the bug.=
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