> > I started monitoring lan traffic with RRDTool on a linux > > box the other day that runs rsync, and I've found what I would > > consider a strange traffic pattern. This linux box rsync > about 2Gb of > > data to a local samba share that is connected to a Windows 2003 > > server. Based on the literal data stat, roughly 20% is > changed nightly > > and uploaded. However, the strange thing is that the traffic > > monitoring shows that there is 3mb/s saturation both ways, > upload and > > download (somehow the server only had a 10mb ethernet > > adapter). > > > > This behavior could not possibly be correct, could it? Or > > is this normal. If needed I can post some stats and > > command line options. > > Why couldn't it? Fast disks and CPU will easily overrun a > 10Mb connection for network file service. Don't forget > 3Mb/s is only 300KB/s compared to 5-30MB/s for disks.
Sorry, I meant to emphasize the point that saturation occurred both ways, inbound and outbound. I can understand the saturation on the upload as it is transfering changed files up to the destination, but what is it downloading that is so large? > Your description leaves a couple of important things out: > version of rsync and how rsync views the transfer with regard > to networking. Rsync version 2.5.6. Both servers are on the same local segment. > Make sure that rsync is doing a --whole-file transfer. > Otherwise it will really thrash the destination. I am not doing --whole-file transfer, but will try that for the session tonight. Thanks, Max -- To unsubscribe or change options: http://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
