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Operating Systems HP-UX NFSd command utilizing more cpu Post 302980359 by MadeInGermany on Friday 26th of August 2016 10:08:42 AM
Old 08-26-2016
The reason why nfsd consumes 850% CPU is that measurement is per CPU core, and it currently uses more than 8 CPU cores. It does that by running more than 8 threads (LWPs).
Unfortunately the HP-UX ps command does not show the process threads (where Linux and Solaris have the -L option for ps).
You can see the NFS statistics:
Code:
nfsstat -ns

Further, if you have tpcdump installed, you can see which NFS client is currently accessing:
Code:
tcpdump port nfs

 

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NFSD(8) 						    BSD System Manager's Manual 						   NFSD(8)

NAME
nfsd -- remote NFS server SYNOPSIS
nfsd [-6rut] [-n num_threads] DESCRIPTION
nfsd runs on a server machine to service NFS requests from client machines. At least one nfsd must be running for a machine to operate as a server. Unless otherwise specified, four servers for UDP transport are started. The following options are available: -r Register the NFS service with rpcbind(8) without creating any servers. This option can be used along with the -u or -t options to re-register NFS if the portmap server is restarted. -n Specifies how many server threads to create. The default is 4. A server should run enough threads to handle the maximum level of concurrency from its clients. -6 Listen to IPv6 requests as well as IPv4 requests. If IPv6 support is not available, nfsd will silently continue and just use IPv4. -t Serve TCP NFS clients. -u Serve UDP NFS clients. For example, ``nfsd -t -u -n 6'' serves UDP and TCP transports using six threads. nfsd listens for service requests at the port indicated in the NFS server specification; see Network File System Protocol Specification, RFC 1094 and NFS: Network File System Version 3 Protocol Specification. The nfsd utility exits 0 on success, and >0 if an error occurs. SEE ALSO
nfsstat(1), nfssvc(2), mountd(8), rpcbind(8) HISTORY
The nfsd utility first appeared in 4.4BSD. BSD
March 17, 2008 BSD
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