Dod wrote: > Hello Arno, > > 1GB networks are very difficult to tune as many hardware behind the > network cards can't handle such high speed, for example hard drives on > "client" machines usually can't handle full 1Gb speed reception and > will stay at average 80-100Mb only this making different bottlenecks > on the machine that could go 100% CPU when it should not. > > Also an other thing, if you force 10Mb or 100Mb on one side you may > encouter some problem if other side is set to auto-negotiate as the > other side will always try to re-negotiate to higher speed (and them > produce a lot of garbage due to negotiation).
That's probably what I saw today. However all interfaces were set to 10 MBit/s mode, may be caused by the switch? Anyway I tested a simple, thumb throttle on the application level which waits after x number of lines have been sent as short as possible which works very well. -- Arno Garrels > > regards. > >> Francois PIETTE wrote: >>>> That makes me think we need a throttle at the root (TWSocket). >>> >>> Would be interesting. > >> Will think about it. > >>> >>>> Just switched the roles, installed the mail server on a slow(er) >>>> box and ran the TSmtpCli application on the fast(er) one. CPU use >>>> of the TSmtpCli application was max 35% whereas the other way >>>> around 60%. >>> >>> Try setting the network speed to 10 Mbps (you should be able to set >>> the speed in the hardware config). > >> I changed it from Autodetect to 10 MBit/s full duplex. There's now >> just 0-1% CPU use and the connection became incredible slow, much too >> slow, that must have messed up something. > >> -- >> Arno Garrels > > >>> I guess you'll see a dramatic drop >>> in CPU usage because your app will be really network bound. If this >>> is really the case, the reverse, that is using 1Gbps, will makes >>> your app CPU bound and this would confirm my analysis. >>> >>> -- >>> francois.pie...@overbyte.be >>> The author of the freeware multi-tier middleware MidWare >>> The author of the freeware Internet Component Suite (ICS) >>> http://www.overbyte.be >> -- >> To unsubscribe or change your settings for TWSocket mailing list >> please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket >> Visit our website at http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
