Hi Howard,
I've reduced the threads to 4 (number of cpus), and I still get frequent coredumps:
#0 0xa83ba58a in strcasecmp () from /lib/libc.so.6 [New Thread 0x9e31800 (LWP 100335)] [New Thread 0x81eb500 (LWP 100316)] [New Thread 0x8188a00 (LWP 100185)] [New Thread 0x81cff00 (LWP 100146)] [New Thread 0x81c9800 (LWP 100069)] [New Thread 0x813a000 (LWP 100626)] (gdb) bt #0 0xa83ba58a in strcasecmp () from /lib/libc.so.6 #1 0x080a93d0 in an_find (a=0xa81b6f0, s=0x830b2a4) at ad.c:842 #2 0x080d5a41 in add_filter_attrs (op=0xa78a800, new_attrs=0xbf1fc8c4, attrs=0x81863e0, filter_attrs=0x830b27c, fattr_cnt=3, fattr_got_oc=0) at pcache.c:1140 #3 0x080d6260 in pcache_op_search (op=0xa78a800, rs=0xbf1fcd70) at pcache.c:1313 #4 0x080c8401 in overlay_op_walk (op=0xa78a800, rs=0xbf1fcd70, which=op_search, oi=0x813ae00, on=0x813af00) at backover.c:498 #5 0x080c861d in over_op_func (op=0xa78a800, rs=0xbf1fcd70, which=op_search) at backover.c:560 #6 0x080c869a in over_op_search (op=0xa78a800, rs=0xbf1fcd70) at backover.c:582 #7 0x0806ec33 in fe_op_search (op=0xa78a800, rs=0xbf1fcd70) at search.c:355 #8 0x0806e752 in do_search (op=0xa78a800, rs=0xbf1fcd70) at search.c:217 #9 0x0806c1b7 in connection_operation (ctx=0xbf1fce00, arg_v=0xa78a800) at connection.c:1133 #10 0xa816be00 in ldap_int_thread_pool_wrapper (xpool=0x8148340) at tpool.c:478 #11 0xa830e5cf in pthread_create () from /usr/lib/libthr.so.2 #12 0x00000000 in ?? ()
-----Original Message----- From: Howard Chu [mailto:hyc@symas.com] Sent: Wednesday, June 20, 2007 10:02 AM To: Imri Zvik Cc: openldap-its@openldap.org Subject: Re: slapd+pcache keeps crashing on FreeBSD 6.2 (ITS#4841)
It appears that your system has simply run out of memory, most likely because you have 34 active threads in the process. That's far too many threads for a typical 32 bit machine.
Imri Zvik ( Smile ) wrote:
I have new tar.gz file ready, this time with unstripped binaries: http://mariska.inter.net.il/~imriz/slapd-crash-10042007.tar.gz
root@cemetery:~$ ldd /usr/local/libexec/slapd /usr/local/libexec/slapd: libldap_r-2.3-releng.so.2 => /usr/local/lib/libldap_r-2.3-releng.so.2 (0xa8161000) liblber-2.3-releng.so.2 => /usr/local/lib/liblber-2.3-releng.so.2 (0xa81a1000) libssl.so.4 => /usr/lib/libssl.so.4 (0xa81b7000) libcrypto.so.4 => /lib/libcrypto.so.4 (0xa81e5000) libfetch.so.4 => /usr/lib/libfetch.so.4 (0xa82d8000) libcom_err.so.3 => /usr/lib/libcom_err.so.3 (0xa82e5000) libcrypt.so.3 => /lib/libcrypt.so.3 (0xa82e7000) libltdl.so.4 => /usr/local/lib/libltdl.so.4 (0xa82ff000) libpthread.so.2 => /usr/lib/libthr.so.2 (0xa8307000) libc.so.6 => /lib/libc.so.6 (0xa8319000) root@cemetery:~$ file /usr/local/libexec/slapd /usr/local/libexec/slapd: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), dynamically linked (uses shared libs), not
stripped
Please let me know if there is anything else you need,
--imriz
-----Original Message----- From: Howard Chu [mailto:hyc@symas.com] Sent: Tuesday, April 03, 2007 12:42 AM To: Imri Zvik ( Smile ) Cc: openldap-its@openldap.org Subject: Re: slapd+pcache keeps crashing on FreeBSD 6.2 (ITS#4841)
imriz@co.zahav.net.il wrote:
Sure. New core dumps and binary file is at http://mariska.inter.net.il/~imriz/slapd-core.tar.gz
The slapd in this snapshot was stripped so no debug symbols are present. Please be sure to use an unstripped binary.
Also, since you're also loading libldap_r, liblber, back-ldap,
back-
bdb, back-meta, and back-ldbm dynamically, you'll need to include those modules in the tarball. (Also with debug and unstripped.)
Although at this point I'm wondering why you're using back-ldbm,
which
has been deprecated for quite a long time.
Please notice that the previous dump was from FreeBSD ports
(OpenLDAP
version 2.3.33).
This one was fetched from the CVS (OPENLDAP_REL_ENG_2_3), with the following configure options:
./configure --with-threads=posix --with-tls=openssl --enable-
dynamic
--without-cyrus-sasl --enable-modules --localstatedir=/var/ db --enable-ldbm=mod --enable-crypt --enable-lmpasswd --enable-
ldap=mod
--enable-meta=mod --enable-rewrite --enable-null=mod --enabl e-monitor=mod --enable-proxycache --disable-syncprov
--enable-bdb=mod
--enable-hdb=mod --enable-dbm-api=berkeley --disable-slurpd -- prefix=/usr/local --enable-debug
-----Original Message----- From: Howard Chu [mailto:openldap-its@OpenLDAP.org] Sent: Tuesday, February 13, 2007 1:14 AM To: Imri Zvik Subject: Re: slapd+pcache keeps crashing on FreeBSD 6.2 (ITS#4841)
It looks like this core is from a binary without debug symbols
present,
can you recompile with debugging enabled and get a new stack trace and
core
file?
-- -- Howard Chu Chief Architect, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/
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imriz＠co.zahav.net.il