Hello, i'm trying to use freeswitch as a redirecting server meaning FS has to receive an INVITE and according to some rules it will redirect calls to other destinations. CALLING_USER FREESWITCH SOMEWHERE INVITE -------------------------------> <------------------------------ 100 Trying <------------------------------ 302 Moved Temporary ACK -------------------------------> INVITE---------------------------------------------------------------------------------> Well, wverything works well except i have perfromance issues .... on my HW FS cannot do more than 40 CPS (INVITE answered by 302 Moved Temporary). When i increase the rate, FS starts delaying 302 response. Right at 50 CPS i see "calls" being build up in FS and the delay begining to grow. When i observe the machine, load average is almost nothing (load average: 1.41, 0.61, 0.60) CPU never goes to 100%, and i see only one thread taking most load... all others are just sitting there with 1-5 % CPU time. This looks to me as FS handles 302 messages in a single thread?!?! tculjaga@FS:/usr/local/freeswitch/conf/dialplan$ top -H top - 10:41:37 up 167 days, 20:42, 3 users, load average: 1.41, 0.61, 0.60 Tasks: 83 total, 2 running, 81 sleeping, 0 stopped, 0 zombie Cpu(s): 25.3%us, 1.5%sy, 0.0%ni, 30.3%id, 42.7%wa, 0.0%hi, 0.2%si, 0.0%st Mem: 2074520k total, 571244k used, 1503276k free, 259604k buffers Swap: 2650684k total, 3020k used, 2647664k free, 153868k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 4814 root 20 0 34188 20m 3780 S 38 1.0 3:10.29 freeswitch 4800 root 20 0 34188 20m 3780 S 6 1.0 0:08.26 freeswitch 4798 root 20 0 34188 20m 3780 R 5 1.0 0:24.46 freeswitch 4787 root 20 0 34188 20m 3780 S 2 1.0 0:11.24 freeswitch 4794 root 20 0 34188 20m 3780 S 1 1.0 0:11.42 freeswitch 4803 root 20 0 34188 20m 3780 S 1 1.0 0:11.74 freeswitch 4788 root 20 0 34188 20m 3780 S 1 1.0 0:02.96 freeswitch 4804 root 20 0 34188 20m 3780 S 1 1.0 0:01.64 freeswitch 4807 root 20 0 34188 20m 3780 S 1 1.0 0:01.68 freeswitch 4811 root 20 0 34188 20m 3780 S 1 1.0 0:02.50 freeswitch cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Xeon(R) CPU 5140 @ 2.33GHz stepping : 6 cpu MHz : 2333.560 cache size : 4096 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr dca lahf_lm bogomips : 4670.78 clflush size : 64 power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Xeon(R) CPU 5140 @ 2.33GHz stepping : 6 cpu MHz : 2333.560 cache size : 4096 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 apicid : 1 initial apicid : 1 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr dca lahf_lm bogomips : 4666.82 clflush size : 64 power management: uname -a Linux l01sipindir1 2.6.26-1-686 #1 SMP Sat Jan 10 18:29:31 UTC 2009 i686 GNU/Linux Of course, i've tuned the machine up ulimit -c unlimited ulimit -d unlimited ulimit -f unlimited ulimit -i unlimited ulimit -n 999999 ulimit -q unlimited ulimit -u unlimited ulimit -v unlimited ulimit -x unlimited ulimit -s 240 ulimit -l unlimited ulimit -a Started FS with minimum modules but still 40 CPS seems to be the limit. So, is there any way to improve performance? Tihomir.