Right now the box has a load average of 76 and I am able to cat files on the remote mounts and netstat -in doesn't report and nic errors. I have munin monitoring this box and it hasn't reported any.
I will try and increase the remote window size and force the mount rather than assume the defaults. thanks for all your help, Adam ----- Steve Alligood <[EMAIL PROTECTED]> wrote: > If the other boxes are working fine with nfs, it probably isn't the > number of nfsd processes running (though you can change that in > /etc/sysconfig/nfs with the RPCNFSDCOUNT setting, default is 8). > > Again, I would make sure it can actually get cat the files from the > fedora box during the higher load times, make sure the mount isn't > stale, that the network is performing correctly (forced NIC and > switchport rather than auto, check with netstat -in for interface > errors), and even make sure to force the nfs mount rather than assume > > the defaults (BSD may default to a larger window, etc, etc). > > None of these are certain, but places worth checking. > > -Steve > > adam fisher wrote: > > This is the mount statement for our BSD boxes and the fedora box. > > > > 10.11.1.91:/data/online /mnt/online nfs > rw,port=2049,intr 0 0 > > > > We then have a /online ->/mnt/online > > > > Fedora says the default is v2. > > > > I am not sure what the 0 0 are doing at the end of the mount but > they were on the freebsd boxes so I just left them. > > > > Is there away to make sure that we are allowing enough connections > on the NFS server? > > > > let me know what you see. > > > > thanks, > > Adam > > > > > > ----- Steve Alligood <[EMAIL PROTECTED]> wrote: > >> it may be HOW you are mounting it, and how fedora versus BSD > defaults > >> to > >> mount it. > >> > >> nfs v2 will be really quick, but not as reliable for data writes > (aka, > >> udp) > >> > >> nfs v3 will be more reliable (tcp) but slower > >> > >> nfs v4 will be reliable (tcp) and secure (encrypted) but a lot > slower > >> > >> Fedora may default to v4 while your BSD does v3 or v2. > >> > >> > >> I have some mounts I use nfs v2 because I am not as worried about > >> writes > >> and I need the speed. I also change the read and write window > sizes, > >> > >> and turn off atime checking: > >> > >> async,soft,noatime,intr,nfsvers=2,rsize=8192,wsize=8192 > >> > >> Of course, the server must support the v2 nfs as well (obvious, but > > >> worth mentioning) > >> > >> -Steve > >> > >> adam fisher wrote: > >>> I appreciate everybody's thoughts on this. > >>> > >>> I agree that the NFS looks to be the bottle neck however we have > 5 > >> other load balanced web servers that are pulling the web data from > our > >> NFS server. We mount the partition and then created sym links to > >> those mounts. The other 5 web boxes are up and running fine. It > is > >> the sixth alone that is having this issue. > >>> The first 5 are BSD this is a Fedora installation as we want to > get > >> away from BSD. > >>> Any other ideas? > >>> > >>> thanks, > >>> Adam > >>> > >>> > >>> ----- Ryan Simpkins <[EMAIL PROTECTED]> wrote: > >>>> On Wed, March 28, 2007 11:44, adam fisher wrote: > >>>>> apache 17268 0.7 0.6 29552 12868 ? D 04:27 > 0:04 > >>>> /usr/sbin/httpd > >>>>> apache 17456 1.1 0.6 29728 13168 ? S 04:27 > 0:06 > >>>> /usr/sbin/httpd > >>>>> apache 17890 0.5 0.6 29928 12588 ? D 04:28 > 0:02 > >>>> /usr/sbin/httpd > >>>>> apache 17893 0.0 0.5 29032 11548 ? D 04:28 > 0:00 > >>>> /usr/sbin/httpd > >>>>> apache 17895 0.0 0.5 29184 11716 ? D 04:28 > 0:00 > >>>> /usr/sbin/httpd > >>>>> apache 17896 0.0 0.5 28740 11256 ? D 04:28 > 0:00 > >>>> /usr/sbin/httpd > >>>>> apache 17897 0.0 0.5 28912 11452 ? D 04:28 > 0:00 > >>>> /usr/sbin/httpd > >>>>> apache 17904 0.3 0.5 29288 11876 ? D 04:28 > 0:01 > >>>> /usr/sbin/httpd > >>>>> apache 17913 0.5 0.5 29316 11892 ? D 04:29 > 0:02 > >>>> /usr/sbin/httpd > >>>>> apache 17923 0.1 0.5 29364 12052 ? D 04:29 > 0:00 > >>>> /usr/sbin/httpd > >>>> > >>>>> Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s > >>>> avgrq-sz avgqu-sz > >>>>> await svctm %util > >>>>> sda 0.00 11.00 0.00 6.00 0.00 136.00 > > >>>> 22.67 0.00 > >>>>> 0.50 0.17 0.10 > >>>>> The web root is located on an NFS share. I restarted NFS on > this > >>>> box just to make > >>>>> sure. When I restart httpd and the load average drops to > around > >> 10 > >>>> or 11 I can > >>>>> browse the webpage just fine. It is when it gets to around 150 > >> that > >>>> I can't. > >>>> Bingo. Your web root is running over NFS. NFS is pure evil for > >> this > >>>> type of work. > >>>> You may be able to improve performance playing around with the > >> various > >>>> NFS mount > >>>> options. > >>>> > >>>> -Ryan > >>>> > >>>> /* > >>>> PLUG: http://plug.org, #utah on irc.freenode.net > >>>> Unsubscribe: http://plug.org/mailman/options/plug > >>>> Don't fear the penguin. > >>>> */ > >>> > > > > /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
