FreeBSD 8.2-PRERELEASE hangs under load with "live" kernel
Lev Serebryakov
lev at FreeBSD.org
Thu Jan 6 10:51:44 UTC 2011
Hello, Freebsd-stable.
I've added torrent client (transmission) to software on my home
server and it starts to hang in very unusual way: kernel works but
userland doesn't.
I can ping it (and it answers). I can scroll console with
"scrolllock" button and keys. I can break into debugger with
Ctrl+SysReq and it shows, that one CPU is occupied by idle process and
other by "Giant tasq", but no userland processes answer: I can not
ssh to it, I cannot login on console, samba is dead, etc.
"ps" in kernel debugger shows, that many of processes in "pfault"
state, and noting more "special".
memtest86+ doesn't show any errors after 8 passes of tests (about
10 hours), so RAM looks Ok.
What should I do in kdb to understand what happens?
Kernel config and /var/run/dmesg.boot is attached.
--
// Black Lion AKA Lev Serebryakov <lev at FreeBSD.org>
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