On Tuesday 29 June 2004 02:05 pm, Jorn Argelo wrote: > Kent Stewart wrote: > >On Tuesday 29 June 2004 11:02 am, Bill Moran wrote: > >>I'm having some really weird problems with ftp performance on > >> FreeBSD 4.10 that I just can't seem to figure out. > >> > >>My uplink here maxes out at about 35k/sec. If I scp to the machine > >>in question I get about 30k/sec (which is expected) but when I ftp, > >> I never get anything better than 15k/sec, and occasionally as low > >> as 8k/sec. > >> > >>Using a server colocated at another facility, I can ftp at about > >>45k/sec, and scp at about 60k/sec. > >> > >>Downloads are all as expected ... scp and ftp downloads seem to be > >> in about the same range, and it's a number I would expect. > >> > >>I tried running the ftp daemon that ships with FreeBSD, as well as > >>Proftpd and they both exhibit the same performance issues. > >> > >>Most settings on this machine are at their defaults. I've tried > >>tweaking send/recv sizes, as well as toggling delayed_ack. None of > >>these have made any difference so far. > >> > >>Suggestions? Is anyone else seeing this? > > > >I want to add that I have a machine that did that once in awhile. As > >soon as I see it, I look at my switch and the NIC has switched into > >half-duplex. An ifconfig still shows full-duplex. I would power down > >and reboot and it went away for awhile. > > > >After having done this 3 or 4 times, I powered it down, reseated the > > NIC and it has been a little over three weeks since it flipped > > modes on me. > > > >Kent > > But even if it is an 10 MBit NIC running half duplex, it should still > be capable of handling internet traffic at normal speeds (200 - 300 > KB/s or something, depends on your line of course) > > My first insight of those problems is probably bad DNS settings. What > about FTPing to your ip address? Is that giving you the bad speed as > well? >
That only occurs when both ifconfig and the NIC are set at half-duplex. The system is on a local network and all systems are in the hosts table. The network is 100Mb/s but the ftp xfer rate would drop to 8KB/s. It is my test system and the drop from 11MB/s to 8KB/s was noticeable. Kent -- Kent Stewart Richland, WA http://users.owt.com/kstewart/index.html _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
