<div dir="ltr"><div>my network card: Intel(R) PRO/1000 MT Network Connection, and all calls have the media going through FS(everything is in the same LAN), cuz sometimes i need to do recording, but no with stress testing, as it will make significant burden to the system.</div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">2013/6/20 William King <span dir="ltr"><<a href="mailto:william.king@quentustech.com" target="_blank">william.king@quentustech.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Vincent,<br>
<br>
What network card hardware are you using? UDP packets on cheap<br>
networking cards are very sensitive to a lack of idle cpu time. I've<br>
seen many models of RealTek cards that will start dropping over 10% of<br>
all UDP packets if your CPU idle drops below ~50%. In my experience<br>
server grade Intel network cards are much better, but even these will<br>
start dropping ~5-10% of UDP packets if your CPU idle gets below 15%.<br>
<br>
Also do these calls have the media going through this box? or through an<br>
external media gateway?<br>
<br>
William King<br>
Senior Engineer<br>
Quentus Technologies, INC<br>
1037 NE 65th St Suite 273<br>
Seattle, WA 98115<br>
Main: (877) 211-9337<br>
Office: (206) 388-4772<br>
Cell: (253) 686-5518<br>
<a href="mailto:william.king@quentustech.com">william.king@quentustech.com</a><br>
<div class="im"><br>
On 06/19/2013 07:55 PM, Vincent Xia wrote:<br>
> I've doubled CPU capability, now the CPU usage at 1000 calls is around<br>
> 50%, but call loss is still 10-20%, maybe Brian is right, don't try more<br>
> than 500 calls.<br>
><br>
><br>
</div>> 2013/6/19 Alex Lake <<a href="mailto:alex@digitalmail.com">alex@digitalmail.com</a> <mailto:<a href="mailto:alex@digitalmail.com">alex@digitalmail.com</a>>><br>
<div class="im">><br>
> If your CPU is averaging around 80-90%, I would consider that maxed out!<br>
> Can you try it on a more powerful machine?<br>
>> while i was doing stress test over FS, things look pretty good as<br>
>> FS is able to hold 800 concurrent calls with a call loss rate at<br>
>> around 0.1%, when leveling up to 1000 concurrent calls, the call<br>
>> loss soars to 10-20%, i made some modification to switch.conf like<br>
>><br>
>> <param name="max-sessions" value="2000"/><br>
>> <param name="sessions-per-second" value="100"/><br>
>><br>
>> but things didn't get any better, the host CPU usage rate is<br>
>> around 80-90%, memory usage: 10%, network load 10%, so i think<br>
>> there should be someway we can make FS handle more concurrent<br>
>> calls, any ideas?<br>
>><br>
>><br>
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