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[cervajs at fpf.slu.cz]

hi,

i'm evaluating performance of centos7
i did tests on centos6 x86_64/distro kernel 2.6.32, asterisk 11.16.0
with 500calls (7sec alaw, simple dialplan, pass trough - sipp
generators/asterisk receiver with answer/playback)
scenario - sipp generators - asterisk - asterisk receiver (i wrote
ansible scenario for this if you are interested)

then i reinstalled system to
centos7 x86_64/distro kernel 3.10, asterisk 11.20.0 and run the test again

there is big performance hit
https://dl.dropboxusercontent.com/u/44105720/context_interrupts.PNG
https://dl.dropboxusercontent.com/u/44105720/cpu.PNG
https://dl.dropboxusercontent.com/u/44105720/load.PNG

any ideas what tweaks can help? (it looks like the main problem is in
interrupts from network card)
your experience with centos7?
any experience with kernel 4.2 from
http://elrepo.org/linux/kernel/el7/x86_64/RPMS/ ?



--
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Marek Cervenka
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[cervajs at fpf.slu.cz]

found this interesting article
http://stackoverflow.com/questions/12111954/context-switches-much-slower-in-new-linux-kernels

running with network-latency profile and its better now but still not
good as centos6

[root@ast1 ~]# tuned-adm active
Current active profile: network-latency


Dne 6.11.2015 v 10:18 Marek Červenka napsal(a):