Am 01.12.2013 23:12, schrieb "Jörg F. Wittenberger":
Hi all,
recently I'm stuck in a strange situation. At the moment I can't make
head or tail of it. Any hint what I could try very much appreciated!!!
The net result: some machines will work for some time and then
not-quite-freeze; they will still work somewhat as below.
Has anybody ever seen something like this? (I suppose that what I see
here is ultimately a Linux bug, after all no unix-alike system should
ever hang like this;
Just found this in the syslog file:
Dec 1 16:41:47 peanut kernel: BUG: scheduling while atomic:
askemos.bin/2320/0x00000001
seems to confirm the "linux bug" problem + the connection the the
chicken build executable.
So: what on earth could trigger such a bug?
though I'm posting it here since so far I'm afraid I have only ever
seen such a hang here and the only suspect program was written in
chicken.)
My observations:
The very same code runs on 9 machines. (3 amd64, 6 ARM) Two hang.
Always the same two.
Both Tonido plug's, that is ARM on Linux, Debian wheezy.
One of them is new, only a few weeks old. The other one served this
process (though running older code obviously) for more that a year
with no problem.
It appears that the problem began not earlier that my last update to
chicken 4.8.3 at Nov 6th.
"top" reports a load of 6.0; close to no processor load;
The only one process running a chicken built executable has about 70MB
memory; this process is not responsive at all (it's supposed serve
network requests, connection attempts just hang forever) and CANNOT be
killed even by "kill -9";
Worse: a "netstat -l -t -p" happens to hang, I can not kill that
netstat either.
So far the only thing I can do seems to be "reboot -f" (to avoid
"shutdown" getting stuck in the inability to kill that process either).
Thanks for any hints!
/Jörg
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