Doubled it so quick? Does that mean its a virtual or real box? The distro, the hardware, the speed of the network, the configuration, the filesystem all matter in performance. There is no mention to what the test is or what the frequency of calls is etc. Short duration calls hurt more than long etc. This is part of why we tend to shy away from load testing questions. On Wed, Jun 19, 2013 at 11:59 PM, S. Scott <8f27e956@gmail.com> wrote:
Vincent,
I concur with quality lan card advice, namely intel. Also, what is your system's "clocksource0" -- both available and current.
Cheers,
————— iThing: Big thumbs & little keys. Please excuse typo, spelling and grammar errors • Thought of the Day – "With all this manure, there must be a pony in here somewhere.”
On 2013-06-19, at 23:35, William King <william.king@quentustech.com> wrote:
Vincent,
What network card hardware are you using? UDP packets on cheap networking cards are very sensitive to a lack of idle cpu time. I've seen many models of RealTek cards that will start dropping over 10% of all UDP packets if your CPU idle drops below ~50%. In my experience server grade Intel network cards are much better, but even these will start dropping ~5-10% of UDP packets if your CPU idle gets below 15%.
Also do these calls have the media going through this box? or through an external media gateway?
William King Senior Engineer Quentus Technologies, INC 1037 NE 65th St Suite 273 Seattle, WA 98115 Main: (877) 211-9337 Office: (206) 388-4772 Cell: (253) 686-5518 william.king@quentustech.com
On 06/19/2013 07:55 PM, Vincent Xia wrote:
I've doubled CPU capability, now the CPU usage at 1000 calls is around 50%, but call loss is still 10-20%, maybe Brian is right, don't try more than 500 calls.
2013/6/19 Alex Lake <alex@digitalmail.com <mailto:alex@digitalmail.com
If your CPU is averaging around 80-90%, I would consider that maxed out! Can you try it on a more powerful machine?
while i was doing stress test over FS, things look pretty good as FS is able to hold 800 concurrent calls with a call loss rate at around 0.1%, when leveling up to 1000 concurrent calls, the call loss soars to 10-20%, i made some modification to switch.conf like
<param name="max-sessions" value="2000"/> <param name="sessions-per-second" value="100"/>
but things didn't get any better, the host CPU usage rate is around 80-90%, memory usage: 10%, network load 10%, so i think there should be someway we can make FS handle more concurrent calls, any ideas?
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