Nginx Windows High Traffic issues

[c0nw0nk]

Maxim Dounin Wrote:
-------------------------------------------------------
> Hello!
> 
> On Sat, Jun 28, 2014 at 12:38:12AM -0400, c0nw0nk wrote:
> 
> > Latest picture
> > http://s633.photobucket.com/user/C0nw0nk/media/Untitled-7.png.html
> > 
> > Everything utilizing the read's and writes is nginx and when i set
> the
> > following buffers i get massive spikes like that.
> > 
> > location ~ \.mp4$ {
> > mp4;
> > mp4_buffer_size 9000m;
> > mp4_max_buffer_size 9000m;
> > }
> 
> Note that when using mp4 module, you should not set 
> mp4_buffer_size too high.  It's initial size of a buffer used to 
> read mp4 files, and if a value specified is bigger than size of 
> the moov atom in an mp4 file, reading extra bytes will be 
> meaningless.  It is generally recommended to set it to something 
> like 512k (the default) or slightly larger (1m, 2m).  Larger 
> values make sense only if most of your mp4 files have huge moov 
> atoms.
> 
> Note well that if you use mp4 pseudo streaming, you should make 
> sure that mp4 files are correctly prepared - i.e., with moov atom 
> placed before mdat.  While nginx will be able to work with files 
> with moov atom at the end, it won't be able to do this 
> efficiently.
> 
> -- 
> Maxim Dounin
> http://nginx.org/
> 
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All videos are already set out like that i also use the following python
script to ensure that they have meta data at the start of the file instead
of the end. https://gist.github.com/marpada/12e7d4a093aec402a989

I did a simple test to confirm it is I/O usage due to large files i run
nginx same traffic conditions but i block "deny all;" to mp4, flv files and
my i/o usage by nginx is about 1mb max and a few kb so i can confirm it is
large files that are doing it i am currently looking into what would be
better for me a SSD or a SAS 15K RPM.

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,251186,251316#msg-251316