Hi, Rob When I test IO performance of pvfs2 using iozone(first with '-i 0' option and then with '-i 1' option), the thread number of iozone is 16. In this situation, I find that the file generated by iozone can not be deleted by iozone, and iozone can not go through now. Have you come across this problem? When the thread number is 1, 4, 8, there is no problem! How about 32, 64 threads? Another question, I use setfattr to set "basic_dist" to a directory /mnt/pvfs2/single. When I use iozone in /mnt/pvfs2/single with the '-t 16' option, the 16 sub-files are stored into only one IO server. Should pvfs2 distribute all the 16 sub-files to all the IO servers to achieve high balance and performance? How to tune some parameters? Thanks! Regards!
On Jan 22, 2008 4:16 AM, Rob Ross <[EMAIL PROTECTED]> wrote: > Hi, > > The order of starting the servers doesn't really matter. You should > only have one line in /etc/pvfs2tab on each client. The hostname can > be any of X, Y, Z, or M. > > Rob > > On Jan 20, 2008, at 8:49 AM, Wang Yu wrote: > > > Hi,all > > Now I have 3 IO servers(X, Y, and Z) and 1 Metadata server(M). And > > I have 4 clients. > > When I run pvfs2-server on these servers, what is the starting order > > of them(X, Y, Z, M)? > > When I configure the file /etc/pvfs2tab in each client, what the > > 'testhost' should be(X, Y or Z)? Should I have three lines in this > > file for X, Y and Z? > > > > Thanks! > > -- > > National Research Center for Intelligent Computing Systems > > Institute of Computing Technology, Chinese Academy of Sciences > > _______________________________________________ > > Pvfs2-users mailing list > > [email protected] > > http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users > > -- National Research Center for Intelligent Computing Systems Institute of Computing Technology, Chinese Academy of Sciences
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