thank you Tim for the tips things to put on the Wiki...
Sam 2011/9/4 Tim Camp <t...@wnsp.com>: > 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. > > > > _______________________________________________ > Rivendell-dev mailing list > Rivendell-dev@lists.rivendellaudio.org > http://lists.rivendellaudio.org/mailman/listinfo/rivendell-dev > > _______________________________________________ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://lists.rivendellaudio.org/mailman/listinfo/rivendell-dev
