2015-01-23 11:44 GMT+02:00 Götz Reinicke - IT Koordinator < goetz.reini...@filmakademie.de>:
> Hi, > > I do have two centos 6.6 servers. With a "performance optimized" rsync I > get an speed of 15 - 20 MB/s > > The options I use are: > > rsync -aHAXxv --numeric-ids --progress -e "ssh -T -c arcfour -o > Compression=no -x" > > If I copy files by smb to/from the servers I do get 60 - 80 MB/s, a dd > (r/w) on the storages attached gives 90 MB/s on the 1Gbit ISCSI (Source > Server) and up to 600MB/s on the 10Gbit ISCSI (Destination Server) storage. > > Both servers have plenty of memory and cpu usage looks low. > > Currently we dont use jumbo frames. Network over all usage is moderate > to low. There are no special sysctl tweeks yet in use. > > As mentioned, I'm confused that even with SMB I do get 3 to 4 times > better performance. > > Any hint and suggestion to track that problem down is welcome! > Problem is ssh, do not use it or apply hpnssh-patches: http://sourceforge.net/projects/hpnssh/ to improve network performance -- Eero _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
