What do you want me to check while running these tests? Sound quality (it's good now even with original 1.0.4). Or CPU utilization?
It's Debian 4. Anthony Minessale-2 wrote: > > Did you do each thing alone too to tell the difference? > -hp alone, disable monotonic alone (i did not see you mention the disable > monotonic) > > as for your 4ms thing, yes we require high resolution timing, if we ask to > sleep 1000 microseconds that is what we need it to sleep for or at least > as > close as possible, and the main reason that thread is never sleeping is > because you can't actually count on it to run every 1ms but you mostly > can. > Hence the whole philosophy on only making 1 thread run hot all the time to > ensure that the rest don't have to repeat the same algorithm. We focus on > high end performance this was the point of your experimentation because we > will need to use a compile time defines and other logic to make it more > efficient on your platform, a platform which we are not using. I am > curious > what would happen if you install Kristian's astlinux on one of your > devices, > i think you should also compare the kernel versions. > > > What OS are you running anyway? > > Here are some more things to try (running plain trunk with no mods) do > these > systematically each alone and all together with/without -hp or disable > monotonic etc to see what different combos create > > comment out this line (line 10) > #define DISABLE_1MS_COND > > rebuild, this tells it to run a conditional at 1ms in the same timer > thread > which will make all the switch_cond_next share a 1ms conditional instead > of > doing microsleeps > > next > > some kernels/devices work better using select(0) for sleep where others > work > better using usleep. > comment out line 109 > apr_sleep(t); > > and try > usleep(t) > > also mac works better using nanosleep so you could try changing it so it > uses the code starting at 101 instead. > > > also your claim about JS should be investigated because I do not think it > should be the case. > but you may want to move this to a jira http://jira.freeswitch.org > > As for the asterisk comparison, > not sure how to answer you, that's your decision. > > > > On Mon, Dec 7, 2009 at 9:28 AM, eaf <erandr-j...@usa.net> wrote: > >> >> Here is what I found... >> >> I tried high-priority scheduling as per your suggestion, reniced the >> program >> explicitly, rewrote timer thread to sleep on cond. variable and activate >> only when there are timers and only when the timer actually had to be >> clicked, turned off SQL thread and removed polling from sofia profile >> thread. >> >> That pretty much eliminated all idle 1ms sleepers that were there except >> for >> three in sofia itself (su_epoll_port). And when I was about to be happy, >> I >> found that two outgoing calls through my VOIP providers when bridged >> together showed terrible distortions. I undid all my changes, tried >> 1.0.4, >> trunk (noticed btw that when I bridge two calls via loopback in JS in the >> trunk I must keep JS running, or the calls get terminated - NOT the same >> as >> in 1.0.4 where exitting JS left calls running), got pretty much the same >> sad >> results. At the same time calls bridged by freeswitch between LAN and any >> of >> the VOIP providers behaved just fine. And calls bridged by Asterisk any >> way >> were fine too. So that pretty much looked like the end of the freeswitch >> trials for me. >> >> But then I timed your code, mine and found that all those 1ms sleeps that >> your timer thread was doing (and all those pollers were doing as well) >> were >> actually 4ms sleeps because you know what unless kernel is configured >> with >> HZ=1000, you can't sleep for less than 4ms (HZ=250) or perhaps even 10ms >> (HZ=100). Mine was 250. >> >> This actually meant that the original timer thread was firing once, >> sleeping >> for 4ms, firing 3 more times back-to-back, sleeping for 4ms more, firing >> 4 >> times back-to-back, etc. It was still firing 20ms timers on time, but >> 30ms >> ones of course were not, since 30ms doesn't divide by 4 evenly. Plus >> whoever >> relied on runtime.reference or switch_micro_time_now() were kind of >> screwed >> because both were running jumpy. Plus whoever assumed that >> apr_sleep(1000) >> or cond_yield() was sleeping for 1ms were also in for a surprise. It felt >> satisfying to find that, however it didn't explain why the same >> distortions >> were observed with rewritten timer thread and disabled RTP timers. >> >> Anyway, I sighed (pretty much like you) and recompiled the kernel with >> HZ=1000. Recompiling kernel on these ALIX boards is fun. If smth goes >> south, >> you need to hook up serial console and see what the heck went wrong. >> >> That eliminated distortions, ha! But made freeswitch more CPU hungry. Now >> the remaining 1ms threads sitting in sofia epoll were really polling for >> 1ms, not 4, and freeswitch was consistently sitting in the first line of >> the >> top chart showing 3% CPU utilization when idle. >> >> Don't know whether it's because of the remaining epolls in sofia or >> whether >> it's because there are still some threads left in freeswitch that I >> neglected to change because they were sleeping with 100ms interval, so I >> figured, who cares. Maybe when all things come together (sofia, 100ms*N) >> freeswitch ends up spending 3% of CPU while doing pretty much nothing. >> >> Btw, compared with Asterisk, the latter is not even visible on the first >> top's screen and spends 1% CPU when bridging two G711 calls and recording >> them to disk. >> >> So, at this time I have both original Asterisk and FS setups running. One >> is >> seemless but clumsy in configuration, the other one is neat and stylish >> but >> too preoccupied with smth... Should I look into sofia epollers? That's >> kind >> of deep in the code. Or should I just stick with Asterisk? >> >> >> >> >> >> Anthony Minessale-2 wrote: >> > >> > There is another user here with a 300mhz box. I am willing to >> investigate >> > this improved performance for weak devices but I need to do it in a >> sane >> > cross-platform way. >> > >> > >> > On Fri, Dec 4, 2009 at 1:32 PM, Yossi Neiman >> > <freeswi...@cartissolutions.com >> >> wrote: >> > >> >> A word to the wise to the general FreeSWITCH community: If Anthony >> >> Minessale suggests that you try to do any number of things, it's a >> very >> >> good idea to try all those ideas before continuing on. I've known >> him, >> >> MikeJ, and bkw for several years, and they almost always have very >> good >> >> ideas as to troubleshoot a problem in FreeSWITCH. It's extremely >> >> frustrating to try to help people out who won't try the provided >> >> suggestions first. >> >> >> >> And note directly to "eaf" - bogomips is quite possibly the least >> >> significant bit of data about a cpu that you will get out of >> >> /proc/cpuinfo... The name itself - bogo, means bogus. >> >> http://en.wikipedia.org/wiki/Bogomips >> >> >> >> -Yossi >> >> >> >> _______________________________________________ >> >> FreeSWITCH-users mailing list >> >> FreeSWITCH-users@lists.freeswitch.org >> >> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users >> >> UNSUBSCRIBE: >> http://lists.freeswitch.org/mailman/options/freeswitch-users >> >> http://www.freeswitch.org >> >> >> > >> > >> > >> > -- >> > Anthony Minessale II >> > >> > FreeSWITCH http://www.freeswitch.org/ >> > ClueCon http://www.cluecon.com/ >> > Twitter: http://twitter.com/FreeSWITCH_wire >> > >> > AIM: anthm >> > MSN:anthony_miness...@hotmail.com >> <msn%3aanthony_miness...@hotmail.com>< >> msn%3aanthony_miness...@hotmail.com<msn%253aanthony_miness...@hotmail.com> >> > >> > >> GTALK/JABBER/PAYPAL:anthony.miness...@gmail.com<paypal%3aanthony.miness...@gmail.com> >> <paypal%3aanthony.miness...@gmail.com<paypal%253aanthony.miness...@gmail.com> >> > >> > IRC: irc.freenode.net #freeswitch >> > >> > FreeSWITCH Developer Conference >> > sip:8...@conference.freeswitch.org >> <sip%3a...@conference.freeswitch.org>< >> sip%3a...@conference.freeswitch.org<sip%253a...@conference.freeswitch.org> >> > >> > iax:gu...@conference.freeswitch.org/888 >> > >> googletalk:conf+...@conference.freeswitch.org<googletalk%3aconf%2b...@conference.freeswitch.org> >> <googletalk%3aconf%2b...@conference.freeswitch.org<googletalk%253aconf%252b...@conference.freeswitch.org> >> > >> > pstn:213-799-1400 >> > >> > _______________________________________________ >> > FreeSWITCH-users mailing list >> > FreeSWITCH-users@lists.freeswitch.org >> > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users >> > >> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users >> > http://www.freeswitch.org >> > >> > >> >> -- >> View this message in context: >> http://old.nabble.com/Choppy-sound-with-PCMU-tp26594250p26678873.html >> Sent from the Freeswitch-users mailing list archive at Nabble.com. >> >> >> _______________________________________________ >> FreeSWITCH-users mailing list >> FreeSWITCH-users@lists.freeswitch.org >> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users >> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users >> http://www.freeswitch.org >> > > > > -- > Anthony Minessale II > > FreeSWITCH http://www.freeswitch.org/ > ClueCon http://www.cluecon.com/ > Twitter: http://twitter.com/FreeSWITCH_wire > > AIM: anthm > MSN:anthony_miness...@hotmail.com <msn%3aanthony_miness...@hotmail.com> > GTALK/JABBER/PAYPAL:anthony.miness...@gmail.com<paypal%3aanthony.miness...@gmail.com> > IRC: irc.freenode.net #freeswitch > > FreeSWITCH Developer Conference > sip:8...@conference.freeswitch.org <sip%3a...@conference.freeswitch.org> > iax:gu...@conference.freeswitch.org/888 > googletalk:conf+...@conference.freeswitch.org<googletalk%3aconf%2b...@conference.freeswitch.org> > pstn:213-799-1400 > > _______________________________________________ > FreeSWITCH-users mailing list > FreeSWITCH-users@lists.freeswitch.org > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users > http://www.freeswitch.org > > -- View this message in context: http://old.nabble.com/Choppy-sound-with-PCMU-tp26594250p26684048.html Sent from the Freeswitch-users mailing list archive at Nabble.com. _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org