[openib-general] [Bug 95] New: Stack seems to reorder multicast entries
bugzilla-daemon at openib.org
bugzilla-daemon at openib.org
Wed May 24 09:04:26 PDT 2006
http://openib.org/bugzilla/show_bug.cgi?id=95
Summary: Stack seems to reorder multicast entries
Product: OpenFabrics Linux
Version: 1.0rc3
Platform: All
OS/Version: Other
Status: NEW
Severity: normal
Priority: P2
Component: IPoIB
AssignedTo: bugzilla at openib.org
ReportedBy: jim at pantasys.com
When running iperf to test multicast performance, we seen many out-of-order
errors when the receive node is running OFED RC3 or RC4.
Case 1: IBGD (or gen2) sending to gen2 receive node
Receive node:
- iperf -s -u -B 224.0.6.66 -i 2
Send node:
- Add multicast route to interface
- iperf -c 224.0.6.66 -u -T 3 -t 400 -i 2 -b 100M -l 100
The receive node should report no lost or out of order frames.
Case 2: same sender, using OFED RC3 or RC4 receive node
Run the same test as above. You will see many multicast frames report out
of order.
We have reproduced this problem in two different sites. In all cases we are
using SUSE10 as the OS hosting the receive stack (gen2 or OFED).
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