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From lasizoillo <lasizoi...@gmail.com>
Subject Cores in a couchdb server
Date Tue, 17 Feb 2009 16:48:10 GMT
Hi

I am running a couchdb (instaled from freebsd ports). I was very happy
with him, but from some days ago I have some core dumps. No other
process in this machine is affected from this issue:

Feb 17 17:06:01 fry kernel: pid 14849 (beam), uid 1001: exited on
signal 11 (core dumped)
Feb 17 17:07:01 fry kernel: pid 14881 (beam), uid 1001: exited on
signal 11 (core dumped)
Feb 17 17:08:02 fry kernel: pid 14913 (beam), uid 1001: exited on
signal 11 (core dumped)
Feb 17 17:09:01 fry kernel: pid 14964 (beam), uid 1001: exited on
signal 11 (core dumped)
Feb 17 17:10:01 fry kernel: pid 15029 (beam), uid 1001: exited on
signal 11 (core dumped)
Feb 17 17:11:02 fry kernel: pid 15096 (beam), uid 1001: exited on
signal 11 (core dumped)
Feb 17 17:12:01 fry kernel: pid 15268 (beam), uid 1001: exited on
signal 11 (core dumped)
Feb 17 17:13:01 fry kernel: pid 15301 (beam), uid 1001: exited on
signal 11 (core dumped)
Feb 17 17:14:01 fry kernel: pid 15341 (beam), uid 1001: exited on
signal 11 (core dumped)
Feb 17 17:15:01 fry kernel: pid 15409 (beam), uid 1001: exited on
signal 11 (core dumped)

Some request generate core dumps, but not all. I couldn't found a
pattern in bad requests.

My machine is a Freebsd:

 $ uname -a
FreeBSD fry.o2cworld.com 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #0: Mon
Dec 15 19:08:33 CET 2008
root@fry.o2cworld.com:/usr/obj/usr/src/sys/O2C  amd64

The core gives ever the same info:
# gdb /usr/local/lib/erlang/erts-5.6.5/bin/beam -c beam.core
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "amd64-marcel-freebsd"...(no debugging
symbols found)...
Core was generated by `beam'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /lib/libutil.so.7...(no debugging symbols found)...done.
Loaded symbols for /lib/libutil.so.7
Reading symbols from /lib/libm.so.5...(no debugging symbols found)...done.
Loaded symbols for /lib/libm.so.5
Reading symbols from /lib/libncurses.so.7...(no debugging symbols found)...done.
Loaded symbols for /lib/libncurses.so.7
Reading symbols from /lib/libthr.so.3...(no debugging symbols found)...done.
Loaded symbols for /lib/libthr.so.3
Reading symbols from /lib/libc.so.7...(no debugging symbols found)...done.
Loaded symbols for /lib/libc.so.7
Reading symbols from
/usr/local/lib/erlang/lib/crypto-1.5.3/priv/lib/crypto_drv.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/local/lib/erlang/lib/crypto-1.5.3/priv/lib/crypto_drv.so
Reading symbols from /lib/libcrypto.so.5...(no debugging symbols found)...done.
Loaded symbols for /lib/libcrypto.so.5
Reading symbols from
/usr/local/lib/couchdb/erlang/lib/couch-0.9.0a-incubating/priv/lib/couch_erl_driver.so...(no
debugging symbols found)...done.
Loaded symbols for
/usr/local/lib/couchdb/erlang/lib/couch-0.9.0a-incubating/priv/lib/couch_erl_driver.so
Reading symbols from /usr/local/lib/libicuuc.so.38...(no debugging
symbols found)...done.
Loaded symbols for /usr/local/lib/libicuuc.so.38
Reading symbols from /usr/local/lib/libicudata.so.38...(no debugging
symbols found)...done.
Loaded symbols for /usr/local/lib/libicudata.so.38
Reading symbols from /usr/local/lib/libicui18n.so.38...(no debugging
symbols found)...done.
Loaded symbols for /usr/local/lib/libicui18n.so.38
Reading symbols from /usr/local/lib/libjs.so...(no debugging symbols
found)...done.
Loaded symbols for /usr/local/lib/libjs.so
Reading symbols from /usr/lib/libstdc++.so.6...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libstdc++.so.6
Reading symbols from /lib/libgcc_s.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libgcc_s.so.1
Reading symbols from /usr/local/lib/libnspr4.so.1...(no debugging
symbols found)...done.
Loaded symbols for /usr/local/lib/libnspr4.so.1
Reading symbols from /libexec/ld-elf.so.1...(no debugging symbols found)...done.
Loaded symbols for /libexec/ld-elf.so.1
#0  0x00000000004a298e in external_size_1 ()
[New Thread 0x800f02300 (LWP 100439)]
[New Thread 0x800f02180 (LWP 100329)]
(gdb) q


I don't know where is the problem: couchdb, beam, freebsd or between
my chair and my keyboard. Any idea?

Excuse me for my bad english.

Regards,

Javi

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