kern/154428: xn0 network interface and PF - Massive performance drop
Hello, facing the same problem with FreeBSD 10.2 on XenServer 6.5. Disabling PF entirely fixes the problem, and the workarounds I found ( "ifconfig xn0 -lro -tso" and "sysctl net.inet.tcp.tso=0" ) don't help unfortunately. -- Regards, Jonas ___ freebsd-xen@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to "freebsd-xen-unsubscr...@freebsd.org"
Re: kern/154428: xn0 network interface and PF - Massive performance drop
I stumbled across PR 135178, perhaps there is some relationship with these PR's, though the reporter of that PR has not responded in some time. On 02/13/11 15:31, Colin Percival wrote: On 02/12/11 20:18, Alex wrote: Fixed by net.inet.tcp.tso: 1 - 0 but why?? found this by trial an error. setting net.inet.tcp.tso to 0 with pf enabled gives good performance, if i set it to 1, speeds plumet to below dialup! There have been problems with Xen and TSO in the past relating to how much data gets handed off to the hypervisor at once... why this would cause issues only with PF, I have no idea, though. ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org
Re: kern/154428: xn0 network interface and PF - Massive performance drop
On 02/12/11 20:18, Alex wrote: Fixed by net.inet.tcp.tso: 1 - 0 but why?? found this by trial an error. setting net.inet.tcp.tso to 0 with pf enabled gives good performance, if i set it to 1, speeds plumet to below dialup! There have been problems with Xen and TSO in the past relating to how much data gets handed off to the hypervisor at once... why this would cause issues only with PF, I have no idea, though. -- Colin Percival Security Officer, FreeBSD | freebsd.org | The power to serve Founder / author, Tarsnap | tarsnap.com | Online backups for the truly paranoid ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org
Re: kern/154428: xn0 network interface and PF - Massive performance drop
The following reply was made to PR kern/154428; it has been noted by GNATS. From: Colin Percival cperc...@freebsd.org To: Alex joo...@joovke.com Cc: freebsd-xen@freebsd.org, bug-follo...@freebsd.org Subject: Re: kern/154428: xn0 network interface and PF - Massive performance drop Date: Sat, 12 Feb 2011 20:31:07 -0800 On 02/12/11 20:18, Alex wrote: Fixed by net.inet.tcp.tso: 1 - 0 but why?? found this by trial an error. setting net.inet.tcp.tso to 0 with pf enabled gives good performance, if i set it to 1, speeds plumet to below dialup! There have been problems with Xen and TSO in the past relating to how much data gets handed off to the hypervisor at once... why this would cause issues only with PF, I have no idea, though. -- Colin Percival Security Officer, FreeBSD | freebsd.org | The power to serve Founder / author, Tarsnap | tarsnap.com | Online backups for the truly paranoid ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org
Re: kern/154428: xn0 network interface and PF - Massive performance drop
On 02/01/11 16:40, Alex wrote: The following reply was made to PR kern/154428; it has been noted by GNATS. From: Alexjoo...@joovke.com To: bug-follo...@freebsd.org Cc: Subject: Re: kern/154428: xn0 network interface and PF - Massive performance drop Date: Tue, 01 Feb 2011 14:29:58 +1100 Confirmed problem still evident in 8.2 RC3 (did a full source csup and buildworld). ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org Fixed by net.inet.tcp.tso: 1 - 0 but why?? found this by trial an error. setting net.inet.tcp.tso to 0 with pf enabled gives good performance, if i set it to 1, speeds plumet to below dialup! ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org
Re: kern/154428: xn0 network interface and PF - Massive performance drop
The following reply was made to PR kern/154428; it has been noted by GNATS. From: Alex joo...@joovke.com To: bug-follo...@freebsd.org Cc: Subject: Re: kern/154428: xn0 network interface and PF - Massive performance drop Date: Tue, 01 Feb 2011 14:29:58 +1100 Confirmed problem still evident in 8.2 RC3 (did a full source csup and buildworld). ___ freebsd-xen@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-xen To unsubscribe, send any mail to freebsd-xen-unsubscr...@freebsd.org
