Red Hat Bugzilla – Bug 51343
NFS slows considerably when using dual processors
Last modified: 2007-04-18 12:35:41 EDT
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows 98)
Description of problem:
When booting the NFS client machine with dual processors, file transfers
are extremely slow with larger files. The speed is improved considerably
by booting the machine using only one processor. The motherboard is a
SuperMicro 370DLE with dual Pentiums. Both the onboard network interface
and an OvisLink interface card were tested with the same results
discounting a problem with the network interfaces.
Steps to Reproduce:
1. Set up NFS client on a dual processor machine
2. Mount a remote directory with large files
3. Do a file copy operation from the remote directory
Actual Results: Extremely slow transfer rates. The Midnight Commander
window indicates file transfer rates of 9-10 KB per second.
Expected Results: Nearly instantaneous file copy
Appears to work OK when booting the dual processor machine with the single
I am sorry to report there's no chance I'd find time to look
at this properly, esp. for RHL 7.1, so closing.
If Fedora does the same file a new one, please.