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[Bug 231234] New: Sometimes desktop hangs for some time, with an nfs mounted home
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Mon, 1 Jan 2007 15:45:04 -0700 (MST)
  • Message-id: <bug-231234-21960@xxxxxxxxxxxxxxxxxxxxxxxxx/>
https://bugzilla.novell.com/show_bug.cgi?id=231234

Summary: Sometimes desktop hangs for some time, with an nfs
mounted home
Product: openSUSE 10.2
Version: Final
Platform: 32bit
OS/Version: Linux
Status: NEW
Severity: Major
Priority: P5 - None
Component: Network
AssignedTo: bnc-team-screening@xxxxxxxxxxxxxxxxxxxxxx
ReportedBy: richard.bos@xxxxxxxxx
QAContact: qa@xxxxxxx


Sometimes desktop hangs for some time, with an nfs mounted home this happens
after a upgrade to opensuse-10.2. Before 10.2 this behaviour was not present,
neither on 10.0 nor 10.1.

Perhaps the problem has to do with those bugs to:
Bug 227645 - NFS has upload limt of 50 KB/s
https://bugzilla.novell.com/show_bug.cgi?id=227
Bug 229848 - unable to access certain web sites
https://bugzilla.novell.com/show_bug.cgi?id=229848

I have not been able to debug/benchmark my nfs setup as described in
bug report 227645:
*Tested diffrent blocksizes (1024, 2048, 4096, 8192, 16384 and 32768) and
benchnmarked them with:
# mount files.first.com:/home /mnt -o rw,wsize=1024
# time dd if=/dev/zero of=/mnt/test bs=16k count=16k
Every benchmark had around the 25 MB/s

If I do that I get:
# time dd if=/dev/zero of=/mnt/test bs=16k count=16k
dd: opening `/mnt/test': Permission denied

real 0m0.003s
user 0m0.000s
sys 0m0.004s

I don't know what is the reason for that.

I have a wireshark dump of 55MB, that shows some interesting output, perhaps
you want to receive this? Before I attach it to the bugreport, I'll provide
an ascii dump of the headers. A short dump of output follows below:
> grep " 430[89]." wireshark.out | cut -c65-
RPC Continuation
RPC Continuation
RPC Continuation
TCP [TCP Window Update] nfs > 972 [ACK] Seq=2447796 Ack=87180476 Win=8500
Len=0 TSV=43593242 TSER=10607958
RPC Continuation
RPC Continuation
RPC Continuation
RPC Continuation
RPC Continuation
RPC Continuation
RPC Continuation
TCP [TCP segment of a reassembled PDU]
TCP [TCP segment of a reassembled PDU]
TCP [TCP segment of a reassembled PDU]
TCP [TCP segment of a reassembled PDU]
TCP [TCP segment of a reassembled PDU]
TCP [TCP segment of a reassembled PDU]
TCP [TCP segment of a reassembled PDU]
TCP [TCP segment of a reassembled PDU]
TCP [TCP segment of a reassembled PDU]
TCP [TCP segment of a reassembled PDU]
TCP [TCP segment of a reassembled PDU]

On a correct working system, I think that the "RPC Continuation" and
"reassembled PDU" shouldn't be there. I can't remember I saw those on systems
prior to 10.2.


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