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Bug 51343 - NFS slows considerably when using dual processors
NFS slows considerably when using dual processors
Product: Red Hat Linux
Classification: Retired
Component: nfs-utils (Show other bugs)
i686 Linux
medium Severity medium
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Assigned To: Pete Zaitcev
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2001-08-09 14:26 EDT by jra
Modified: 2007-04-18 12:35 EDT (History)
0 users

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-04-19 11:53:33 EDT
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Description jra 2001-08-09 14:26:04 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.

How reproducible:

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

Additional info:

Appears to work OK when booting the dual processor machine with the single 
processor kernel
Comment 1 Pete Zaitcev 2004-04-19 11:53:33 EDT
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.

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