On 5.2/i386, man sysctl says To adjust the number of kernel nfsio threads used to service asynchronous I/O requests on an NFS client machine:
# sysctl vfs.nfs.iothreads=4 The default is 4; 20 is the maximum. See nfssvc(2) and nfsd(8) for further discussion. Does it still apply? The default now seems to be # sysctl vfs.nfs.iothreads vfs.nfs.iothreads=-1 which scales itself to 4 when I copy a file from a NFS server. Should I be touching vfs.nfs.iothreads manually? Setting it to 20 just panicked my 5.2/i386. Also, neither nfssvc(2) nor nfsd(8) seems to contain any "further discussion" of this. Jan