[streaming] Re: Increasing VLS thruput
Vince Phan
Vince.Phan at transact.com.au
Thu Jul 24 10:53:47 CEST 2003
Thanks Ben,
These streams are MPEG-2 Transport Streams (~4Mb/s rate each). These
streams are located locally on the same server.
The total bandwidth output is ~ 26Mb/s.
CPU idle is 0%, stream is occasionally got "hiccup" (pixelation)
-----Original Message-----
From: Benjamin PRACHT [mailto:bigben at via.ecp.fr]
Sent: Thursday, 24 July 2003 6:45 PM
To: streaming at videolan.org
Subject: [streaming] Re: Increasing VLS thruput
On Thu, Jul 24, 2003, Vince Phan wrote :
> Hi,
>
> I have a typical VLS setup with Pent IV 1.6GHz, 256MB RAM, 60GB
HardDisk, running Debian with cached enabled.
> The most I can get out of VLS is 6 MPEG-2 streams streaming
simultanously. (typical 4Mb/s rate)
> It requires 2 instance per stream and each instance uses avg usage CPU
5.6%-13.5%, MEM 6.7%.
>
> A typical tcp/ip data pumps with 3 second buffers program only
requires merely CPU 0.5%, MEM 2% running on the same machine.
>
That's quite strange. What's the source of your streams ? Is the CPU
utilisation of ssytem or user type ?
I'm currently streaming 1 DVD stream (8 Mbit/s), 3 satellite Video
streams (4 Mbit/s each) and 25 radios (200 kbit/s each) from a Duron 900
MHz 256 Mo ram, and CPU is still 40 % idle... I managed to stream 6
MPEG4 videos using VLC stream output on the same server before it became
overloaded. (the total bitrate was over 30 Mbit/s).
--
$(echo "BigBen")
Oui je quote, et alors ?
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