Hi, On Mon, Feb 27, 2012 at 12:48 PM, Arnaud Lacombe <lacom...@gmail.com> wrote: > Hi, > > On Mon, Feb 27, 2012 at 10:36 AM, Attilio Rao <atti...@freebsd.org> wrote: >> 2012/2/27, Arnaud Lacombe <lacom...@gmail.com>: >>> Hi, >>> >>> On Tue, Feb 14, 2012 at 11:41 AM, Arnaud Lacombe <lacom...@gmail.com> wrote: >>>> Hi folks, >>>> >>>> For the records, I was running some tests yesterday on top of a >>>> 9.0-RELEASE, amd64, kernel when the box hanged. At the time of the >>>> hang, the box was running a process with about 2800 threads with heavy >>>> IPC between 1400 writers and 1400 readers. The box was in single user >>>> mode (/bin/sh coming from FreeBSD 7.4-STABLE). Here is the beginning >>>> of the dmesg: >>>> >>> This happened a second time, now with FreeBSD 8.2-RELEASE. Complete >>> machine hang. The machine was running about 4000 threads in a single >>> process, all the other condition are the same. >> >> Arnaud, >> can you please break in your kernel via KDB, collect the following >> informations from the DDB prompt: >> - ps >> - alltrace >> - show allpcpu >> - possibly get a coredump with 'call doadump' >> > Will do, but I'll need to rebuild a kernel to include DDB. > >> and in the end provide all those along with kernel binary and possibly >> sources somewhere? >> > I'll be testing a bare `release/8.2.0' with the following patch: > > diff --git a/sys/amd64/conf/GENERIC b/sys/amd64/conf/GENERIC > index c3e0095..7bd997f 100644 > --- a/sys/amd64/conf/GENERIC > +++ b/sys/amd64/conf/GENERIC > @@ -79,6 +79,10 @@ options INCLUDE_CONFIG_FILE # Include this > file in kernel > > options KDB # Kernel debugger related code > options KDB_TRACE # Print a stack trace for a panic > +options DDB > +options BREAK_TO_DEBUGGER > +options ALT_BREAK_TO_DEBUGGER > > # Make an SMP-capable kernel by default > options SMP # Symmetric MultiProcessor Kernel > ok, it happened again after 2 days, the process was running about 3200 threads. I'm trying to break into DDB and let you know, I'm not that successful for now...
- Arnaud > - Arnaud > >> Thanks, >> Attilio >> >> >> -- >> Peace can only be achieved by understanding - A. Einstein _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
