Re: Funny Network Transit Delays
the other end is set to full. I wouldn't trust any "Auto" settings until it can be assured that it doesn't hurt. Agreed -- from experience with a couple of HP Procurve 2424M switches and various 100Mb cards, the "Auto" setting is less than reliable... My Netgear FA310TX(?) and Intel EtherExpress 100B cards all get detected correctly, but most of the other ones can be a little flaky with auto-detect... If you can't control the switch settings (most unmanaged switches), you'll have to play with the ifconfig flags to get the net card and the switch to agree on what protocol they're using. mike To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Funny Network Transit Delays
Are you sure the duplex settings are correct on all nics? If they are on coax or a hub, it should be set to half duplex. If you are connected to a switch or a crossover cable, you may use full duplex on the nic only if the other end is set to full. I wouldn't trust any "Auto" settings until it can be assured that it doesn't hurt. On Fri, 12 May 2000, Yann Ramin wrote: -BEGIN PGP SIGNED MESSAGE- Hi there. I have an interesting problem (figured it out myself) but I'm wondering why it is occuring. I have a setup with Two FreeBSD machines (3.2 and 4.0 RELEASE), a Windows machine, and a NetBSD machine. The NetBSD machine has three 3Com 3C509/B NICs (ISA) and acts as a router to three subnets, one per machine. When I FTP something from the 4.0 to the 3.2 box, performance sucks. And not that the NetBSD machine is too slow, it seems neither the 4.0 or 3.2 is using the network like it should. Looking at the hub, I'm getting a pattern like this: Activity(3 secs) -- Pause (4 secs) -- Activity (2 secs) -- Pause (1 sec) -- Activity (7 secs) -- Pause (7 secs) and on for a total throughput of 80KB/s. The same occurs from Windows to the 4.0 box with Samba. I tried installing FreeBSD on the router, with no luck. The only solution I could come up with was to: sysctl -w net.inet.tcp.sendspace=2900 sysctl -w net.inet.tcp.recvspace=2900 This brings performance up to about 400KB/s, which is "ok" because of the extra latency of the router. I have another similar situation with two 4.0 boxes and iMacs running on two Cisco Catalyst 2924XL switches. If I use a plain vanilla 10Base hub I get a cool 620KB/s. Does anyone have any idea what is causing this? Yann -- Yann Ramin [EMAIL PROTECTED] Atrus Trivalie Productions www.atrustrivalie.eu.org irm.it.montereyhigh.com Monterey High IT www.montereyhigh.com ICQ46805627 AIModdatrus Marina, CA "All cats die. Socrates is dead. Therefore Socrates is a cat." - The Logician # fortune "To be responsive at this time, though I will simply say, and therefore this is a repeat of what I said previously, that which I am unable to offer in response is based on information available to make no such statement." -BEGIN PGP SIGNATURE- Version: PGPfreeware 5.0i for non-commercial use MessageID: FUGyzVH4vQLKyp0A67Qx1eOXvDr2V38A iQA/AwUBORzT6jEK6loGD1TnEQK9/QCg5+2Jaxj+BzYd0JkHCPoYMRgLsVoAnjp3 8t3n4rO9Oyr+R086nXwG5Asb =/RT8 -END PGP SIGNATURE- To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Funny Network Transit Delays
-BEGIN PGP SIGNED MESSAGE- Hi there. I have an interesting problem (figured it out myself) but I'm wondering why it is occuring. I have a setup with Two FreeBSD machines (3.2 and 4.0 RELEASE), a Windows machine, and a NetBSD machine. The NetBSD machine has three 3Com 3C509/B NICs (ISA) and acts as a router to three subnets, one per machine. When I FTP something from the 4.0 to the 3.2 box, performance sucks. And not that the NetBSD machine is too slow, it seems neither the 4.0 or 3.2 is using the network like it should. Looking at the hub, I'm getting a pattern like this: Activity(3 secs) -- Pause (4 secs) -- Activity (2 secs) -- Pause (1 sec) -- Activity (7 secs) -- Pause (7 secs) and on for a total throughput of 80KB/s. The same occurs from Windows to the 4.0 box with Samba. I tried installing FreeBSD on the router, with no luck. The only solution I could come up with was to: sysctl -w net.inet.tcp.sendspace=2900 sysctl -w net.inet.tcp.recvspace=2900 This brings performance up to about 400KB/s, which is "ok" because of the extra latency of the router. I have another similar situation with two 4.0 boxes and iMacs running on two Cisco Catalyst 2924XL switches. If I use a plain vanilla 10Base hub I get a cool 620KB/s. Does anyone have any idea what is causing this? Yann -- Yann Ramin [EMAIL PROTECTED] Atrus Trivalie Productions www.atrustrivalie.eu.org irm.it.montereyhigh.com Monterey High ITwww.montereyhigh.com ICQ 46805627 AIM oddatrus Marina, CA "All cats die. Socrates is dead. Therefore Socrates is a cat." - The Logician # fortune "To be responsive at this time, though I will simply say, and therefore this is a repeat of what I said previously, that which I am unable to offer in response is based on information available to make no such statement." -BEGIN PGP SIGNATURE- Version: PGPfreeware 5.0i for non-commercial use MessageID: FUGyzVH4vQLKyp0A67Qx1eOXvDr2V38A iQA/AwUBORzT6jEK6loGD1TnEQK9/QCg5+2Jaxj+BzYd0JkHCPoYMRgLsVoAnjp3 8t3n4rO9Oyr+R086nXwG5Asb =/RT8 -END PGP SIGNATURE- To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
