[Bug 233729] New: NFS transfer rate depends on filesystem
https://bugzilla.novell.com/show_bug.cgi?id=233729 Summary: NFS transfer rate depends on filesystem Product: openSUSE 10.2 Version: RC 5 Platform: 32bit OS/Version: SuSE Other Status: NEW Severity: Major Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: k-epsilon@gmx.de QAContact: qa@suse.de Writing small files to the filesystem hdb1 or hdc1 via NFS is significant slower than writing to hda(?). The filesystem at hda(?) and hdb1 is ext3 and at hdc1 the filesystem is XFS. All filesystems are exported with the sync option. But this bug does *not* only depend on if sync is enabled or not, because writing to hda1 is still fast (also with sync enabled). Writing /etc to hda1 over NFS needs about 10 s, but writing /etc to hdb1 or hdc1 needs more than 120 s. This is much slower than scp! However writing large files results in a transfer rate of 12 MB/s. The used options are: # more /var/lib/nfs/etab /nfs/share 10.0.0.0/24(rw,sync,wdelay,hide,nocrossmnt,secure,no_root_squash,no_all_squash,s ubtree_check,secure_locks,acl,mapping=identity,anonuid=65534,anongid=65534) /nfs/home 10.0.0.0/24(rw,sync,wdelay,hide,nocrossmnt,secure,no_root_squash,no_all_squash,s ubtree_check,secure_locks,acl,mapping=identity,anonuid=65534,anongid=65534) The server has got a Pentium 3 CPU and a Networkcard with the e100 module. To boot that machine i had to set the parameter "maxcpus=0" at the boot prompt. Without this parameter this machine does not boot. SUSE 10.0 on the same machine does not show this bug. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is.
https://bugzilla.novell.com/show_bug.cgi?id=233729 gregkh@novell.com changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|kernel- |nfbrown@novell.com |maintainers@forge.provo.nove| |ll.com | -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is.
https://bugzilla.novell.com/show_bug.cgi?id=233729 nfbrown@novell.com changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |NEEDINFO Info Provider| |k-epsilon@gmx.de ------- Comment #1 from nfbrown@novell.com 2007-01-12 12:59 MST ------- - What sort of drives do you have? Are they all the same? What controller are they on? - Have you tested local IO speeds on the server? What is the result? - What are the sizes of the different filesystems? - What mount options? (data=journal can make ext3 work better with nfs/sync). - Can you get a tcpdump of network traffic while the slow writing is happening? something like tcpdump -s0 -w /tmp/dump host CLIENT and host SERVER and port 2049 and attach /tmp/dump The most obvious explanation given the details you provide is that hda is a faster drive, but I suspect you have thought of that and excluded the possibility. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is.
https://bugzilla.novell.com/show_bug.cgi?id=233729 ------- Comment #2 from nfbrown@novell.com 2007-02-25 23:12 MST ------- Ping? Is any more information available of can I close this bug? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is.
https://bugzilla.novell.com/show_bug.cgi?id=233729 nfbrown@novell.com changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |RESOLVED Info Provider|k-epsilon@gmx.de | Resolution| |INVALID ------- Comment #3 from nfbrown@novell.com 2007-03-11 17:11 MST ------- Closing bug due to lack of activity. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is.
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