[Freeswitch-users] "Upgrade" from 1.3b to 1.2stable caused higher cpu usage

Wed Sep 25 19:30:13 MSD 2013

I am sure there are people who know a lot more about this but hope this helps. I use the following in the source FreeSwitch directory:

git log     <- this displays the git levels and dates of every change

Assuming you know what date the problem did not occur, copy the git level from the log screen, then:

git bisect start
git bisect bad      <- this tells bisect the current level has the problem
git bisect good ….git level….  <- this tells bisect at what level the problem did not occur

Now do you make, etc. and test. If the problem still exists type "git bisect bad", if not "git bisect good". Each time doing a make, install, test. Eventually you will find what level introduced the problem. However…. on most occasions I found that some levels would not get a clean "make" so I would have to look at the log try to pick levels close but would clean compile,
Mario G

On Sep 24, 2013, at 2:12 PM, Freddy Andersen <freddy at cfandersen.com> wrote:

> Hi Anthony,
>  I was looking into doing the bisect but can't get it working with the 1.3.13 branch? This is also the first time I'm using git bisect so that could be the issue… Any pointers?
> 
> --
> - Freddy
> 
> On Sep 20, 2013, at 12:02 PM, Anthony Minessale <anthony.minessale at gmail.com> wrote:
> 
>> Can you git bisect between master HEAD and that 1.3b tag and see if you can find a specific commit?
>> 
>> 
>> On Fri, Sep 20, 2013 at 12:37 PM, Freddy Andersen <freddy at cfandersen.com> wrote:
>> Hi,
>> 
>> We have 5 Freeswitch servers running with about 500 concurrent calls total so about 100 each at peak. These servers was installed with version FreeSWITCH Version 1.3.13b+git~20130215T194756Z~9733740cab (git 9733740 2013-02-15 19:47:56Z) and they have been running fine with 250% cpu (out of 2400%), load average hits 3 at peak. 
>> 
>> We wanted to get our Freeswitch onto a stable release and thought 1.2.12 was the most stable version so this is what we installed on one server. This servers cpu is at 800-900% and load average hits 10 when the server runs with 1.2.12, if we rollback cpu goes back to old 2-300%.. Call quality is still ok but I feel we have less room for more load and upgrading should normally improve performance not decrees performance. Just as an experiment I also tried to install latest 1.4 thinking this might have been something in the 1.2 branch but 1.4 acts the exact same.
>> 
>> here is a quick vmstat snapshot:
>> 
>> procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
>>  r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa
>> 15  2      0 430144 321280 9988432    0    0     3    33    1    1 11  3 87  0
>>  7  0      0 425160 321344 9991936    0    0    56   116 67726 113824 30  4 66  0
>> 22  0      0 424380 321368 9993580    0    0    28     0 84236 148377 25  4 70  0
>> 19  0      0 423656 321404 9994324    0    0    32     0 61714 103954 23  2 74  0
>>  9  0      0 422740 321444 9996020    0    0    24  1524 52116 86355 23  2 74  0
>>  7  0      0 421908 321456 9997160    0    0    20  5524 58977 98786 22  2 76  0
>> 10  0      0 420812 321464 9998244    0    0     4     0 52964 83640 23  2 75  0
>> 21  0      0 417152 321496 9999184    0    0    56    36 73430 124669 25  3 71  0
>>  6  0      0 417496 321516 10000704    0    0    20     0 78778 134441 27  3 69  0
>> 
>> This is from sometime, same calls but from a freeswitch 1.3 server:
>> 
>> procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
>>  r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa
>>  3  0    244 2668752 269200 4589652    0    0     7    60    1    0 14  3 83  0
>>  4  0    244 2666192 269228 4590676    0    0    64    12 44941 50134 24  4 72  0
>>  3  0    244 2670200 269256 4592680    0    0    28    24 62350 86122 34  4 62  0
>>  4  0    244 2668584 269280 4593848    0    0    20     0 43495 53052 27  2 70  0
>>  6  0    244 2664636 269332 4595884    0    0    32  5576 53941 67240 26  4 70  0
>>  8  0    244 2665316 269380 4596720    0    0    40    68 66434 91266 31  4 64  0
>>  3  0    244 2666780 269404 4597792    0    0    24     0 41862 48055 23  3 74  0
>> 
>> 
>> 
>> --
>> - Freddy
>> 
>> _________________________________________________________________________
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>> 
>> 
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>> 
>> 
>> -- 
>> Anthony Minessale II
>> 
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>> 
>> 
>> 
>> 
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> 
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
> 
> 
> 
> 
> Official FreeSWITCH Sites
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> 
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