We have a couple of Scientific Linux 6.1 NFS servers. I looked at /proc/net/rpc/nfsd and was surprised to see on both of them that the thread histogram is all zero:
# cat /proc/net/rpc/nfsd | grep th th 8 0 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 There are clients using one of these servers continuously, and at times heavily, so I'm puzzled by these statistics and am assuming this is a bug or configuration problem rather than a realistic depiction of the thread state. For comparison, I looked a couple of our SL 5.x NFS servers and see normal looking thread lines as expected, not just a bunch of zeros. Any thoughts on what could be going on? Known bug? Configuration problem? I'd appreciate if any other SL 6 admin with an active NFS server could check /proc/net/rpc/nfsd and see if the thread count histogram is empty like this. If you have an SL 6 NFS server with non-zero thread stats, could you send the kernel and nfs-utils versions for comparison to ours, given below? # uname -r 2.6.32-131.21.1.el6.x86_64 # rpm -qa |grep nfs nfs4-acl-tools-0.3.3-5.el6.x86_64 nfs-utils-lib-1.1.5-3.el6.x86_64 nfs-utils-1.2.3-15.el6.0.sl6.x86_64 One of the servers has only NFS v3 clients (16 NFS client nodes), while the other has only a single NFS v4 client. Here is /proc/net/rpc/nfsd for one of them (sure to get line-wrapped mangled): # cat /proc/net/rpc/nfsd rc 19 70434483 726969598 fh 352 0 0 0 0 io 2092104517 3971637111 th 8 0 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ra 32 393921819 0 0 0 0 0 0 0 0 0 985424 net 797404498 0 797447453 155310 rpc 797455746 0 0 0 0 proc2 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 proc3 22 74845 228480507 19923612 17460391 64581715 115066 394911350 39971881 5313458 37750 36353 0 849734 3589 4288363 8251 267872 1146073 22996 140662 0 18601904 proc4 2 0 0 proc4ops 59 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Thanks for your time, -Wayne Betts STAR Computing Support at BNL Physics Dept., Bldg. 510 PO Box 5000 Upton, NY 11973 [email protected] 631-344-3285
