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Re: Nginx flv stream gets too slow on 2000 concurrent connections

January 23, 2013 02:02PM
Following is the output of 2200+ concurrent connections and kernel version
is 2.6.32 :-

Linux 2.6.32-279.19.1.el6.x86_64 (DNTX005.local) 01/23/2013
_x86_64_ (16 CPU)

avg-cpu: %user %nice %system %iowait %steal %idle
1.75 3.01 0.49 0.13 0.00 94.63

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 23.27 2008.64 747.29 538482374 200334422

avg-cpu: %user %nice %system %iowait %steal %idle
0.97 0.00 1.10 0.19 0.00 97.74

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 30.00 2384.00 112.00 2384 112

avg-cpu: %user %nice %system %iowait %steal %idle
0.13 0.00 0.52 0.13 0.00 99.22

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 21.00 1600.00 8.00 1600 8

avg-cpu: %user %nice %system %iowait %steal %idle
0.19 0.00 0.45 0.26 0.00 99.10

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 37.00 2176.00 8.00 2176 8

avg-cpu: %user %nice %system %iowait %steal %idle
0.45 0.00 0.58 0.19 0.00 98.77

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 24.00 1192.00 8.00 1192 8

avg-cpu: %user %nice %system %iowait %steal %idle
0.32 0.00 0.45 0.19 0.00 99.03

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 29.00 2560.00 8.00 2560 8


avg-cpu: %user %nice %system %iowait %steal %idle
0.32 0.00 0.65 0.19 0.00 98.84

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 35.00 2584.00 152.00 2584 152

avg-cpu: %user %nice %system %iowait %steal %idle
0.26 0.00 0.39 0.39 0.00 98.96

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 25.00 1976.00 8.00 1976 8

avg-cpu: %user %nice %system %iowait %steal %idle
0.32 0.00 0.52 0.39 0.00 98.77

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 33.00 1352.00 8.00 1352 8

avg-cpu: %user %nice %system %iowait %steal %idle
0.26 0.00 0.58 0.26 0.00 98.90

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 28.00 2408.00 8.00 2408 8

avg-cpu: %user %nice %system %iowait %steal %idle
0.45 0.00 0.65 0.06 0.00 98.84

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 37.00 1896.00 8.00 1896 8

avg-cpu: %user %nice %system %iowait %steal %idle
0.71 0.00 0.97 0.13 0.00 98.19

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 33.00 2600.00 64.00 2600 64

avg-cpu: %user %nice %system %iowait %steal %idle
0.32 0.00 0.65 0.26 0.00 98.77

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 20.00 1520.00 8.00 1520 8

avg-cpu: %user %nice %system %iowait %steal %idle
0.19 0.00 0.39 0.19 0.00 99.22

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 49.00 3088.00 80.00 3088 80

avg-cpu: %user %nice %system %iowait %steal %idle
0.26 0.00 0.91 0.26 0.00 98.58

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 48.00 1328.00 8.00 1328 8

avg-cpu: %user %nice %system %iowait %steal %idle
0.32 0.00 0.32 0.26 0.00 99.09

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 32.00 1528.00 8.00 1528 8

avg-cpu: %user %nice %system %iowait %steal %idle
0.45 0.00 0.58 0.39 0.00 98.58

Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 35.00 1624.00 72.00 1624 72

avg-cpu: %user %nice %system %iowait %steal %idle
0.39 0.00 0.58 0.19 0.00 98.84



On Wed, Jan 23, 2013 at 11:07 PM, Lukas Tribus <luky-37@hotmail.com> wrote:

>
> Can you send us a 20+ lines of output from "vmstat 1" under this load?
> Also, what exact linux kernel are you running ("cat /proc/version")?
>
>
> ________________________________
> > Date: Wed, 23 Jan 2013 21:51:43 +0500
> > Subject: Re: Nginx flv stream gets too slow on 2000 concurrent
> connections
> > From: shahzaib.cb@gmail.com
> > To: nginx@nginx.org
> >
> > Following is the output of 3000+ concurrent connections on iostat 1
> > command :-
> >
> > avg-cpu: %user %nice %system %iowait %steal %idle
> > 1.72 2.96 0.47 0.12 0.00 94.73
> >
> > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
> > sda 22.47 1988.92 733.04 518332350 191037238
> >
> > avg-cpu: %user %nice %system %iowait %steal %idle
> > 0.39 0.00 0.91 0.20 0.00 98.50
> >
> > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
> > sda 22.00 2272.00 0.00 2272 0
> >
> > avg-cpu: %user %nice %system %iowait %steal %idle
> > 0.46 0.00 0.91 0.07 0.00 98.57
> >
> > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
> > sda 23.00 864.00 48.00 864 48
> >
> > avg-cpu: %user %nice %system %iowait %steal %idle
> > 0.39 0.00 0.72 0.33 0.00 98.56
> >
> > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
> > sda 60.00 3368.00 104.00 3368 104
> >
> > avg-cpu: %user %nice %system %iowait %steal %idle
> > 0.20 0.00 0.65 0.20 0.00 98.95
> >
> >
> >
> > On Wed, Jan 23, 2013 at 8:30 PM, shahzaib shahzaib
> > <shahzaib.cb@gmail.com<mailto:shahzaib.cb@gmail.com>> wrote:
> > Sketchboy, i sent you the output of only 1000 concurrent connections
> > because it wasn't peak hours of traffic. I'll send you the output of
> > iostat 1 when concurrent connections will hit to 2000+ in next hour.
> > Please keep in touch cause i need to resolve this issue :(
> >
> >
> > On Wed, Jan 23, 2013 at 8:21 PM, skechboy
> > <nginx-forum@nginx.us<mailto:nginx-forum@nginx.us>> wrote:
> > From your output I can see that it isn't IO issue, I wish I could help
> you
> > more.
> >
> > Posted at Nginx Forum:
> > http://forum.nginx.org/read.php?2,235447,235476#msg-235476<
> http://forum.nginx.org/read.php?2%2c235447%2c235476#msg-235476>
> >
> > _______________________________________________
> > nginx mailing list
> > nginx@nginx.org<mailto:nginx@nginx.org>
> > http://mailman.nginx.org/mailman/listinfo/nginx
> >
> >
> >
> > _______________________________________________ nginx mailing list
> > nginx@nginx.org http://mailman.nginx.org/mailman/listinfo/nginx
>
> _______________________________________________
> nginx mailing list
> nginx@nginx.org
> http://mailman.nginx.org/mailman/listinfo/nginx
>
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Subject Author Posted

Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 23, 2013 04:44AM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

skechboy January 23, 2013 06:58AM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 23, 2013 07:12AM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 23, 2013 07:16AM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

skechboy January 23, 2013 10:21AM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 23, 2013 10:32AM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 23, 2013 11:52AM

RE: Nginx flv stream gets too slow on 2000 concurrent connections

Lukas Tribus January 23, 2013 01:10PM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 23, 2013 02:02PM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 23, 2013 02:06PM

RE: Nginx flv stream gets too slow on 2000 concurrent connections

Lukas Tribus January 23, 2013 02:20PM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

Rainer Duffner January 23, 2013 02:30PM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 23, 2013 03:22PM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 23, 2013 03:28PM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 23, 2013 03:40PM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

Geoffrey Hartz January 23, 2013 03:44PM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

Jonathan Matthews January 23, 2013 05:22PM

RE: Nginx flv stream gets too slow on 2000 concurrent connections

Lukas Tribus January 23, 2013 07:06PM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

Scott Ribe January 23, 2013 07:14PM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

Stefan Caunter January 23, 2013 10:52PM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 24, 2013 01:58AM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 24, 2013 06:32AM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

姚伟斌 January 24, 2013 10:56PM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

richardm January 23, 2013 04:50PM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

Rainer Duffner January 23, 2013 04:52PM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

Dennis Jacobfeuerborn January 23, 2013 07:42AM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 23, 2013 08:14AM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

Geoffrey Hartz January 23, 2013 08:36AM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 23, 2013 09:16AM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

Reinis Rozitis January 23, 2013 09:44AM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 23, 2013 10:00AM

Re: Nginx flv stream gets too slow on 2000 concurrent connections

shahzaib1232 January 23, 2013 10:10AM



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