Hi! > Yes. I think you should be able to use about 70% of the bandwidth (I can get > about 32Mb/s out of 45Mb/s (T3) with 100ms latency). You might need to > increase your TCP window size and/or change the I/O scheduler you're using > for NBD. Switch to "deadline" scheduler if you're not using that one already. > And set the TCP window size, as follows:
Thanks for the tips - never changed something there before:) I set the scheduler to deadline ... > In order to raise the window size to about 1 MB, the following sysctl > settings should be changed: > > net.core.rmem_max = 500000 > net.core.wmem_max = 500000 ... increase TCP max buffer size (given in Byte?) > net.ipv4.tcp_rmem = 4096 87380 1333000 > net.ipv4.tcp_wmem = 4096 16384 1333000 What does all these values mean exactly? > The window size should be a little above your network "pipe size": > > pipe = bandwidth * latency Changed the values to the examples given ... but no change. Sticking to 130kB/s at the moment. Any further ideas!? Dirk ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Nbd-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/nbd-general
