> > I've noticed that ZFS on 8.1-STABLE still has problems with > sendfile. > > Which svn revision, just in case?
8.1-STABLE The source tree was updated 2010-10-27 > > When accessing a file at first time the transfer speed is > too low, but > > on following attempts the transfer speed is normal. > > > > How to repeat: > > > > $ dd if=/dev/random of=/tmp/test bs=1m count=100 > > 100+0 records in > > 100+0 records out > > 104857600 bytes transferred in 5.933945 secs (17670807 bytes/sec) > > $ sudo env LC_ALL=C /usr/libexec/ftpd -D > > > > The first attempt to fetch file: > > > > $ fetch -o /dev/null ftp://localhost/tmp/test > > /dev/null 1% of 100 > MB 118 kBps > > 14m07s^C > > fetch: transfer interrupted > > > > The transfer rate is too low (approx. 120 kBps), but any > subsequent attempts > > are success: > > > > $ fetch -o /dev/null ftp://localhost/tmp/test > > /dev/null 100% of 100 > MB 42 MBps > > $ fetch -o /dev/null ftp://localhost/tmp/test > > /dev/null 100% of 100 > MB 47 MBps > > Can you do an experiment with the same structure but sendfile > excluded? IMHO, ftpd hasn't an option to disable sendfile. I've tried the nginx with disabled sendfile (the nginx.conf contains "sendfile off;"): $ dd if=/dev/random of=test bs=1m count=100 100+0 records in 100+0 records out 104857600 bytes transferred in 5.892504 secs (17795083 bytes/sec) $ fetch -o /dev/null http://localhost/test /dev/null 100% of 100 MB 41 MBps $ fetch -o /dev/null http://localhost/test /dev/null 100% of 100 MB 44 MBps $ fetch -o /dev/null http://localhost/test /dev/null 100% of 100 MB 44 MBps -- Alexander Zagrebin _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
