Greetings, Just thought I would report the solution of my NFS import troubles. The transfer rates that were faster on drive A, the OS drive were measured using smb, when I shared it via NFS, transfer rates were almost the same as drive B (/var/snd), so I started looking at NFS configuration since the smb figures ruled out network issues and the computers and OS were the same on both my servers. plus a smb share on my /var/snd drive proved it was not the drive.
Long story short, with the number of stations and workstations accessing this server at the same time the number of NFS kernel treads were not enough to handle the traffic. Now I remember solving this problem, years ago when the first server went on line. (should always write this stuff down somewhere) /etc/sysconfig/nfs contains this nfs setting default number of kernel treads is normally 4 on some distros it is 8, you should increase this number until retrans reach 0. You can check the number of retrans since last boot by running this on the client *nfsstat -rc* the number needed for my server turned out to be 16. set at the default of 4, I got over 300 retransmissions in just a few minutes. In short minimize your NFS retransmissions with this setting. On a server that is just acting as your audio file server and/or your mysql server there is really nothing more important for your kernel to be doing. Also just as a mention, be sure to optimize your mount options in fstab. mine are: server:/var/snd /var/snd nfs rsize=32768,wsize=32768,intr,noatime,ew,async 0 0 this will set the read/write block size to 32kb instead of the default which is 8 Hope this post will help me remember this next time. Cheers Tim Camp Director of Operations/Programming Dot Com Plus L.L.C. dba WZEW-FM WNSP-FM Mobile, Al.
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