Hi,
there are several types of lock in OpenSER. The default ones to be used
are the fastlocks - they are very fast to operated, but they are
implemented via busy-waiting; this is ok since the lock are used in
openser only for synchronization and not for waiting.
when using locks from pthread lib, you do not see the busy-waiting ;).
anyhow, this means you found a problem - a process gets stuck in lock
somewhere....is there a way to reproduce this??
regards,
bogdan
Jean-François SMIGIELSKI wrote:
Hello list!
My problem: when I receive an INVITE, after processing and forwarding, the UDP
process starts to loop (it hangs and consumes a lot of CPU time) . A call to
strace on this process shows it loops on sched_yield, just after a call to
udp_send. Because this function was only used in the locking features, I
compiled again with pthread_mutex locks and it seems the problem disappears.
This happens only for INVITE requests (I don't know why) and it is systematic
with openser 1.1.0 on a linux 2.6.18 on a bi-Xeon. It was compiled with the
default options (fast_lock) for this architecture. You can find below the
command line at compile time.
The problem does not happen with the same openser 1.1.0 (binary) on linux
2.6.11, 2.6.12, 2.6.15 and 2.6.16 for various architectures.
-fPIC -DPIC -g -O9 -funroll-loops -Wcast-align -Wall -minline-all-stringops -falign-loops -mtune=athlon -DNAME='"openser"'
-DVERSION='"1.1.0-notls"' -DARCH='"i386"' -DOS='"linux"' -DCOMPILER='"gcc 3.4.4"' -D__CPU_i386
-D__OS_linux -D__SMP_no -DCFG_DIR='"/usr/local/etc/openser/"' -DPKG_MALLOC -DSHM_MEM -DSHM_MMAP -DUSE_IPV6 -DUSE_MCAST -DUSE_TCP
-DDISABLE_NAGLE -DHAVE_RESOLV_RES -DF_MALLOC -DSTATISTICS -DHAVE_GETHOSTBYNAME2 -DHAVE_UNION_SEMUN -DHAVE_SCHED_YIELD -DHAVE_MSG_NOSIGNAL
-DHAVE_MSGHDR_MSG_CONTROL -DHAVE_ALLOCA_H -DHAVE_TIMEGM -DUSE_PTHREAD_MUTEX -DHAVE_EPOLL -DHAVE_SIGIO_RT -DHAVE_SELECT
[EMAIL PROTECTED] /tmp]# uname -a
Linux yellow 2.6.18 #1 SMP PREEMPT Mon Nov 27 17:21:08 CET 2006 i686 pentium4
i386 GNU/Linux
I hope it helps, Thanks a lot!
JF Smigielski.
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