To follow up on this, I suffered the same problem myself. I found that disabling flow control on the ports on the switch improved performance dramatically
Hope this is useful Cheers Cj On 27 Sep 2012, at 04:10, "Craig Bender" <craig.ben...@oracle.com> wrote: > Very few (enterprise) switches handle udp buffering well. This limits the > rate to prevent overrunning the switch. In essence, it's granting a lower > rate. At higher rate, switches tend to drop the udp stream. Ironically, the > more expensive the switch, the more apt this is bound to happen. Cheap > switches just forward stuff on, they never buffer. > > On 9/26/12 7:50 PM, David Bullock wrote: >> On 27 September 2012 11:30, Craig Bender <craig.ben...@oracle.com >> <mailto:craig.ben...@oracle.com>> wrote: >> >> Try adding >> >> set hires_tick = 1 >> >> to /etc/system and reboot >> >> >> Hi Craig, you seem to be referring to lore written up in section >> 18.11.4.1 of >> http://docs.oracle.com/html/E22661_15/Troubleshooting-Performance.html >> where it mentions "The X server is allowed to send at a certain specific >> rate granted by the Sun Ray Client". >> >> So, does setting the hires_tick on the server ultimately cause the Sun >> Ray Client to 'grant' a higher rate? Or does it affect only the server >> so that it delivers data in a smoother (less bursty) fashion ("fill, >> drain, fill, drain" instead of "fill,fill,drain,drain" where the switch >> can only take so many un-drained fills before dropping a packet)? >> >> Assuming the latter, is it more preferable to have a switch which can >> handle the buffering, or to set the hires timer? >> >> thanks, >> >> thanks, >> David. >> >> >> _______________________________________________ >> SunRay-Users mailing list >> SunRay-Users@filibeto.org >> http://www.filibeto.org/mailman/listinfo/sunray-users >> > _______________________________________________ > SunRay-Users mailing list > SunRay-Users@filibeto.org > http://www.filibeto.org/mailman/listinfo/sunray-users _______________________________________________ SunRay-Users mailing list SunRay-Users@filibeto.org http://www.filibeto.org/mailman/listinfo/sunray-users
