hi all, first question in the group, so please, forgive the lack of specific details that you might need. the problem, as you can deduct from the subject is this: if I try to export several disk or disk partitions using vblade and then use these to construct a raid 5 with mdadm, I register a write speed of around 70 MByte/s, but only 7 MByte/s during read sessions (during and after the reconstruction of the raid). on the server side I'm using 4 nodes with 8 cpu core per node and a 1 Gbps network connection. The aoe traffic travel on a dedicated NIC connected to a Gigabit switch. I can see the transmission speed directly from the interface of the switch and the speeds I'm reporting are the ones registered by the switch. on the client side I'm using an Intel 2x Xeon system, with a dual Gigabit NICs configured in bonding, but also using one of the nodes as client with a single NIC test doesn't change the results. all the Nics are configured with a MTU of 9000 and the rmem values of the kernel are fixed to 278528 as suggested the whole systems (clients/servers) are using Fedora 7 64 bit with the last Kernel version and the vblade daemon available from officials repositories.
did anybody noticed this behavior and have an idea on what is going ? thanks to any suggestion -- Damir Laurenzi System Manager EPFL email: damir.laure...@epfl.ch ------------------------------------------------------------------------------ SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ _______________________________________________ Aoetools-discuss mailing list Aoetools-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/aoetools-discuss
