We also experienced that speex encoder may cause CPU increased significantly when silence occurred (not sure why), and this is already handled by pjmedia since few months ago. So which version are you using? Regards, nanang 2008/5/14 cat tanger <tanger_wendy at yahoo.com.cn>: > hi, > when A and B establishes a call , and user B say something ,user A keeps > silence ,then A PC's cpu fluctuate frome 20 to 50%. if user A say > something then A cpu reduce to 10%. (user A PC is Interl pentium Duale2140 > 1.6Ghz ,2G memory ,OS :xp.) > > when A cpu is 40% ,I find stack as follows: > ntkrnlpa.exe!ExAllocatePoolWithTag+0x8ab > ntkrnlpa.exe!MmIsDriverVerifying+0xa08 > hal.dll!HalClearSoftwareInterrupt+0x342 > pjsua_vc8d.exe!inner_prod+0x62 > pjsua_vc8d.exe!pitch_xcorr+0x3a > pjsua_vc8d.exe!open_loop_nbest_pitch+0x225 > pjsua_vc8d.exe!nb_encode+0x698 > pjsua_vc8d.exe!speex_encode_native+0x1f > pjsua_vc8d.exe!sb_encode+0x112 > pjsua_vc8d.exe!speex_encode_int+0x73 > pjsua_vc8d.exe!spx_codec_encode+0x8f > pjsua_vc8d.exe!put_frame_imp+0x2cb > pjsua_vc8d.exe!put_frame+0x1a5 > pjsua_vc8d.exe!pjmedia_port_put_frame+0x77 > pjsua_vc8d.exe!write_port+0x3e1 > pjsua_vc8d.exe!get_frame+0x536 > pjsua_vc8d.exe!pjmedia_port_get_frame+0x77 > pjsua_vc8d.exe!play_cb+0x5e > pjsua_vc8d.exe!PaPlayerCallback+0x1fa > pjsua_vc8d.exe!NonAdaptingProcess+0x28c > pjsua_vc8d.exe!PaUtil_EndBufferProcessing+0x290 > pjsua_vc8d.exe!ProcessingThreadProc+0x644 > kernel32.dll!GetModuleFileNameA+0x1b4 > > > ________________________________ > ???????????? > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > >