Re: poor ethernet network performance
Keegan Saunders [kee...@undefinedbehaviour.org] wrote: > I'm noticing that my OpenBSD desktop with a Realtek 8168 ethernet controller > (re(4) driver) is experiencing slow network speeds on OpenBSD 6.9 (not > recent, has been an issue before) > Why not include a dmesg? How do you expect anyone to troubleshoot this problem with zero data?
poor ethernet network performance
I'm noticing that my OpenBSD desktop with a Realtek 8168 ethernet controller (re(4) driver) is experiencing slow network speeds on OpenBSD 6.9 (not recent, has been an issue before) For example, on OpenBSD, cloning GitHub repos has about <400kb/s download speeds whereas on Linux it is upwards of 30mb/s (both using SSH). The issue is the same using wget, curl, etc. on other sites. Using scp from another machine to this machine over LAN is achieving about max 6mb/s which is still less than desired. How can I further debug this issue to figure out what is wrong? Is the driver having issues/known to have issues? Thanks, K
Re: poor ethernet network performance
On Mon, 17 May 2021 at 08:23, Keegan Saunders wrote: > I'm noticing that my OpenBSD desktop with a Realtek 8168 ethernet > controller > (re(4) driver) is experiencing slow network speeds on OpenBSD 6.9 (not > recent, has been an issue before) > I've had something similar in the past and it was a duplex mismatch. If you have a managed switch, check that it and ifconfig agree on the duplex setting that was auto-negotiated. Failing that, try forcing either full-duplex or half-duplex with ifconfig and/or hostname.re0. -- Darren Tucker (dtucker at dtucker.net) GPG key 11EAA6FA / A86E 3E07 5B19 5880 E860 37F4 9357 ECEF 11EA A6FA (new) Good judgement comes with experience. Unfortunately, the experience usually comes from bad judgement.
Re: poor ethernet network performance
On 5/16/2021 6:07 PM, Keegan Saunders wrote: I'm noticing that my OpenBSD desktop with a Realtek 8168 ethernet controller (re(4) driver) is experiencing slow network speeds on OpenBSD 6.9 (not recent, has been an issue before) For example, on OpenBSD, cloning GitHub repos has about <400kb/s download speeds whereas on Linux it is upwards of 30mb/s (both using SSH). The issue is the same using wget, curl, etc. on other sites. Using scp from another machine to this machine over LAN is achieving about max 6mb/s which is still less than desired. How can I further debug this issue to figure out what is wrong? Is the driver having issues/known to have issues? Thanks, K I've had similar issues with OpenBSD (and MacOS) when connecting to/through a CentOS/RHEL machine with the tcp_tw_recycle sysctl enabled (on CentOS/RHEL). Unfortunately this was enabled by default in CentOS 6.x. If you're going through an old Linux proxy this may impact OpenBSD performance.
