<html> <head> <style></style> </head> <body class='hmmessage'> Many thanks Stefan! Another question: When I use LD_PRELOAD=/usr/lib/libgsttracelib.so gst-launch ...... on TI Dm365, I find the performance shown by gst-tracelib not quite correct. For example, when I test element v4l2src src pad push data interval, it shows around 50ms for PAL inputs, which breaks real-time. But I have tested it with the same pipeline before, by adding some g_print when pushing data downstream, and it showed 40ms interval at that time. So will gst-tracelib affect performance? In my mind,  gst-tracelib is used for profiling and should not have this phenomenon.  So I think maybe it is my problem not correctly using it? > To: gstreamer-devel@lists.freedesktop.org > Subject: Re: gst-tracelib usage > > On 12.05.2011 03:52, mingqian Han wrote: > > Thanks Stefan, > > > > You are right, I resolved the problem after I upgraded to python 2.7. > Cool! > > > > Besides, could you please tell me more about the statistics, such as: > > > buffers 360 (ro 0,pre 0,dis 110,gap 0,dlt 0), > This is 360 buffers send, the next details are the flags on the buffers, > read-only, preroll, discont, gap, delta-unit > > Stefan > > I do not quite understand things like ro, pre, dis, gap, dlt. > > > > Thanks again! > > > > Rafael > > > > > Date: Wed, 11 May 2011 17:14:55 +0300 > > > From: ensonic@hora-obscura.de > > > To: gstreamer-devel@lists.freedesktop.org > > > Subject: Re: gst-tracelib usage > > > > > > On 11.05.2011 06:31, mingqian Han wrote: > > > > Hi all, > > > > I am now trying to use gst-tracelib to profile gstreamer performance > > > > on TI Dm365. > > > > After several trials, it works. > > > > But I meet a problem with the log. > > > > When I use ./gsttl_splitlog.py gsttl.log, it fails, saying : > > > > AttributeError: 'str' object has no attribute 'partition' > > > > Your python seems a bit dated. This was added in python 2.5. > > > http://docs.python.org/library/stdtypes.html#str.partition > > > > > > Copy the log from the device to your laptop and run gsttl_splitlog.py > > > and other post-processing there. Its anyway a good idea to run only the > > > capture on the device. > > > > > > Stefan > > > > > > > > > > > my log file looks like: > > > > get_caps 0:00:01.542899375 1.542899 0 v4l2source_src > > > > mallinfo 0:00:01.542899375 1.542899 3796992 1261568 3765720 31272 > > > > mallinfo 0:00:01.612360084 1.612360 3932160 1261568 3776576 155584 > > > > get_caps 0:00:01.613437375 1.613437 1 videoinputfilter_sink > > > > mallinfo 0:00:01.613437375 1.613437 3911680 1261568 3776840 134840 > > > > mallinfo 0:00:01.616136167 1.616136 3911680 1261568 3776904 134776 > > > > msg_structure-change 0:00:01.618435834 1.618436 0 v4l2source > > > > mallinfo 0:00:01.618435834 1.618436 3911680 1261568 3766176 145504 > > > > mallinfo 0:00:01.620666834 1. 620667 3911680 1261568 3766200 145480 > > > > msg_structure-change 0:00:01.683715542 1.683716 0 v4l2source > > > > mallinfo 0:00:01.683715542 1.683716 3911680 1261568 3766464 145216 > > > > mallinfo 0:00:01.686293168 1.686293 3911680 1261568 3765912 145768 > > > > get_caps 0:00:01.687726668 1.687727 2 videoinputfilter_src > > > > mallinfo 0:00:01.687726668 1.687727 3911680 1261568 3766120 145560 > > > > mallinfo 0:00:01.764980293 1.764980 3911680 1261568 3766504 145176 > > > > get_caps 0:00:01.766166709 1.766167 3 videoaccel_sink > > > > mallinfo 0:00:01.766166709 1.766167 3911680 1261568 3766744 144936 > > > > mallinfo 0:00:01.767746834 1.767747 3911680 1261568 3766808 144872 > > > > msg_structure-change 0:00:01.768862959 1.768863 2 videoinputfilter > > > > mallinfo 0:00:01.768862959 1.768863 3911680 1261568 3766552 145128 > > > > ma llinfo 0:00:01.770855251 1.770855 3911680 1261568 3766568 145112 > > > > msg_structure-change 0:00:01.847549875 1.847550 2 videoinputfilter > > > > mallinfo 0:00:01.847549875 1.847550 3911680 1261568 3766832 14 4848 > > > > mallinfo 0:00:01.849411209 1.849411 3911680 1261568 3766288 145392 > > > > get_caps 0:00:01.850398709 1.850399 4 videoaccel_src > > > > > > > > > > > > Besides, I need help on interpreting the statistics. > > > > For example, > > > > Pad Statistics: > > > > > tivideorate0_src : buffers 360 (ro 0,pre 0,dis 110,gap 0,dlt 0), > > > > size (min/avg/max) ......./ 829440/......., time 0:00:42.713248790, > > > > bytes/sec 6990767.699925 > > > > < videoinputqueue_sink : buffers 0 (ro 0,pre 0,dis 0,gap 0,dlt 0), > > > > size (min/avg/max) 4294967295/ 0/ 0, time 0:00:00.000000000, > > bytes/sec nan > > > > < appsink_sink : buffers 0 (ro 0,pre 0,dis 0,gap 0,dlt 0), size > > > > (min /avg/max) 4294967295/ 0/ 0, time 0:00:00.000000000, bytes/sec nan > > > > > videoinputfilter_src : buffers 1110 (ro 1110,pre 0,dis 370,gap 0,dlt > > > > 0), size (min/avg/max) ......./ 829440/......., time > > > > 0:00:44.444906708, bytes/sec 20715048.544230 > > > > > ticlockoverlay_src : buffers 361 (ro 0,pre 0,dis 110,gap &nbs p; > > > > 0,dlt 0), size (min/avg/max) ......./ 829440/......., time > > > > 0:00:43.162948999, bytes/sec 6937149.730129 > > > > > titextoverlay_src : buffers 361 (ro 0,pre 0,dis 110,gap 0,dlt 0), > > > > size (min/avg/max) ......./ 829440/......., time 0:00:43.104183585, > > > > bytes/sec 6946607.384630 > > > > > videotee_src2 : buffers 361 (ro 0,pre 0,dis 110,gap 0,dlt 0), size > > > > (min/avg/max) ......./ 829440/......., time 0:00:43.068566417, > > > > bytes/sec 6952352.142416 > > > > > > > > Element Statistics: > > > > GstQueue:osdqueue ; : buffers in/ou t 362/ 361 bytes in/out 300257280/ > > > > 299427840 first activity 0:00:06.126533002, ev/msg/qry sent 6/ 7/ 0 > > > > GstTextOverlay:titextoverlay : buffers in/out 361/ 361 bytes in/out > > > > 299427840/ 299427840 first activity 0:00:07.294452794, ev/msg/qry sent > > > > 6/ 5/ 0 > > > > GstTee:videotee : buffers in/out 361/ ; 1081 bytes in/out 299427840/ > > > > 896624640 first activity 0:00:07.366531001, ev/msg/qry sent 6/ 9/ 0 > > > > GstGhostPad:sink : buffers in/out -/ 361 bytes in/out -/ 299427840 > > > > first activity 0:00:07.416145126, ev/msg/qry sent 0/ 0/ 0 > > > > > > > > What do these different columns mean? > > > > > > > > Thanks in advance. > > > > > > > > Rafael > > > > > > > > > > > > _______________________________________________ > > > > gstreamer-devel mailing list > > > > gstreamer-devel@lists.freedesktop.org > > > > http://lists.freedesktop.org/mailman/l istinfo/gstreamer-devel > > > > > > _______________________________________________ > > > gstreamer-devel mailing list > > > gstreamer-devel@lists.freedesktop.org > > > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel > > > > > > _______________________________________________ > > gstreamer-devel mailing list > > gstreamer-devel@lists.freedesktop.org > > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel > > _______________________________________________ > gstreamer-devel mailing list > gstreamer-devel@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel </body> </html>