tweaking sockets / OS parameters for speed
bruce.labitt at autoliv.com
bruce.labitt at autoliv.com
Fri Oct 2 14:23:42 EDT 2009
I tried netpipe-tcp aka NPtcp between the nodes. Made an interesting
graph. It shows that my system doesn't exceed 100Mbps unless the message
size is greater than ~2K bytes. If the message size is over 16K, then the
network can deliver 300Mbps. At a 1MB message the throughput is ~
600Mbps. After that things flatten out. This is with the current tcp
buffer size.
This is with ipv4. I think my system is connecting as ipv6. Would this
make a difference?
NPtcp offers a switch to change the tcp buffer size for the experiment.
Where is the value (and what is it called) that stores the tcp buffer
size? Is it in sysctl.conf?
thanks!
-Bruce
******************************
Neither the footer nor anything else in this E-mail is intended to or constitutes an <br>electronic signature and/or legally binding agreement in the absence of an <br>express statement or Autoliv policy and/or procedure to the contrary.<br>This E-mail and any attachments hereto are Autoliv property and may contain legally <br>privileged, confidential and/or proprietary information.<br>The recipient of this E-mail is prohibited from distributing, copying, forwarding or in any way <br>disseminating any material contained within this E-mail without prior written <br>permission from the author. If you receive this E-mail in error, please <br>immediately notify the author and delete this E-mail. Autoliv disclaims all <br>responsibility and liability for the consequences of any person who fails to <br>abide by the terms herein. <br>
******************************
More information about the gnhlug-discuss
mailing list