nate writes: > lhecking at users.sourceforge.net wrote: > > > > Reading the "waiting IOs" thread made me remember I have a similar problem > > that has been here for months, and I have no sulution yet. > > > > A single CentOS 5.2 x86_64 machine here is overloading our NetApp filer > > with > > excessive NFS getattr, lookup and access operations. The weird thing is > > > > There was a kernel update in the 5.2/5.3 time frame that > fixed a NFS client bug regarding lookups, what kernel are you > running? 2.6.18-92.1.22.el5. I can test all newer kernels if necessary. > Have you tried running lsof on the client side to see which > processes are using the files served over NFS? Yes, but there's simply too much output to make this useful, and most of it, about 75%, is related to EDA software which is installed on the filer. I.e. 3rd party software we have no control over and don't know what it does internally.