-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 André,
On 9/11/13 3:41 PM, André Warnier wrote: > Arun Kumar wrote: >> Hi >> >> We are developing small video hosting application ,we are not >> writing any special program for open the video file and send to >> player , simply we are using tomcat DefaultServlet for above all >> video request , now we have to benchmark our application for >> following scenario >> >> 1) video size 100MB (1080i HD) 2) Total Network bandwidth 10Mbps >> (IN/OUT) >> >> >> Now how to calculate how many max thread is allowed for above >> scenario ,with out interrupting users viewing experience, here >> each video response should secure 400kbps bandwidth for no >> interruption > > 400 Kb/s = (approx.) 0.4 Mb/s > > So in the theoretical very best of cases, you could possibly serve > 10 / 0.4 = 25 clients at the same time. > > But of course that will never happen, because there will always be > something else using a part of that bandwidth at any one time, or > preventing some of the 25 threads to be serving a video file. > > So, realistically, count about 50% of that ? > >> >> So my question is how many concurrent users can view videos >> without interrupt then how to test this scenario ,and how tomcat >> is handling bandwidth sharing across the request >> > > Tomcat is not doing anything in terms of sharing the bandwidth > equally between threads. > > Your best bet is to try this out in reality. There are a number > of client programs available that allow you to test this and > measure the result. This one for instance : > http://httpd.apache.org/docs/2.2/programs/ab.html Install Apache > httpd (any 2.x version), it comes with it free. Better yet, launch a bunch of the actual clients against a test service, and see how many you can run usably before things start lagging too much. That should give you a good idea of what is possible. Hint: you probably need more bandwidth than you think you do. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJSMdVRAAoJEBzwKT+lPKRYI7cP/0FSfiIkz6bSPwTW1stCtEYr Gmke5rHjR33PdKtG4C8M2UgU4cdibuXmtIJn7uBdkVZkT/ufi0LsiFnC63CZkB2Q 9g1/jLyB7dwx67+ZzMnNLU6Wt16/IxHUsHywFYu8DSvaSNwdRr9Tk65AKjU17eii 7xlEzCQN5FMHJSKlmWcThrMjJGwwSSzhQrylylxXtoH31pH5OUUz41onHiRgz7Xp UgjaurHw+THzJSmSn9Eqjsx5V0PCjAi6xPvjYbZsvdV0j1LrUOMei/mGTYBS7mxk OpBegz8iRkTuwm7Y3bjnsfoaSkU/3RDrdiNlu0Xb4WLPP6wEYke2hLgfSrpV9suY h9amPzIlEhWBn6KQzoQY8n06dGMONyWPmwTDSAEl1HhwMH5oYiyMoZuaQsekFNcJ 2zFAAatb3xu+z5kql+p/iafQk/gACjHUjJu1+emn//qcrWlKr7mspnF7IoJgf016 c+rMk/SKQRlD5v/+eGP1Hs/IOytNeIZLzcGfH9Dj6lYQjzQLk0NcctevUlNwjs3/ k+1yDmVGQloR+RJL5hiPBse+hPHiuW2JGajhBdg4Hb569zlEPpDBJAVaAwaESwzq e8goNdkjMZqzRy6ULqlLAqFhpFwQK1ES38WBYeVkuC0BcSN8pcYyc2pih2lQCdkq aB2wY4JyF8bZUeWxT0zv =v0nT -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
