On Tuesday, November 05 at 22:44:10 CET, Jose G. Juanino wrote: > Hi all, > > today I have upgraded to 12.1-RELEASE from 12.0-RELEASE-p10 via > freebsd-update. The host is a VMware guest with vmx net interface. The > system runs with 12.0-RELEASE perfectly, with no issue, reliably for months. > > I have boot environments enabled (thanks god) and therefore I am able to > switch between both 12.0 and 12.1 versions. > > Just after boot the new 12.1 release, I noticed that my apache did not > serve pages with the previous speed, but rather the opposite: any web > operation from clients hangs. > > After a single inspection in the FreeBSD 12.1 server, I see that Send-Q > in netstat is the root cause of the issue. While in 12.0 Send-Q is > almost always zero or close to zero in every socket, in 12.1 I get the > following (snipped output): > > [ .... ] >
Hi again, after doing a further research, I have noticed that in 12.0 version dev.vmx.0.txq0.hstats.tso_packets is always increasing (especially when doing large transfers), but in 12.1 is statically equal to zero, never increases. As workaround, I have disabled TCP segment offloading by setting the net.inet.tcp.tso=0 sysctl in 12.1 version and the host again performs almost as well as before in 12.0. I hope this helps others suffering the same issue. Regards -- Jose G. Juanino _______________________________________________ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
