Bug 713063 - rtl8139:Execute multiple netperf clients caused system call interrupted
Summary: rtl8139:Execute multiple netperf clients caused system call interrupted
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kvm
Version: 5.7
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: jason wang
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks: Rhel5KvmTier2 716371
TreeView+ depends on / blocked
 
Reported: 2011-06-14 06:40 UTC by YangFeng
Modified: 2015-04-20 00:26 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
: 716371 (view as bug list)
Environment:
Last Closed: 2011-10-25 07:59:56 UTC


Attachments (Terms of Use)

Description YangFeng 2011-06-14 06:40:51 UTC
Description of problem:
When I run multiple netperf clients on host, they connect with the
netperf-server in guest.
clients fail to execute cmds and output "interrupted system call"

Version-Release number of selected component (if applicable):
kvm-83-236.el5
2.6.18-266.el5

How reproducible:
always

Steps to Reproduce:
1. boot up a guest with rtl8139
2. setup and launch netperf server in guest
guest)# ./netserver
3. setup and launch multiple netperf client in host.
host)# while true;do ./netperf -t TCP_STREAM -H $guest_ip ;echo Tcp:$?;done &
host)# while true;do ./netperf -t UDP_STREAM -H $guest_ip;echo Udp:$?;done &
host)# while true;do ./netperf -H $guest_ip -- -m 200; echo $? Other:$?;done &
  
Actual results:
netperf clients outputted:
interrupted system call 
netperf remote error 4


Expected results:
netperf commands completed. 

Additional info:

Comment 1 Ronen Hod 2011-06-21 17:37:31 UTC
Jason,
is it related to https://bugzilla.redhat.com/show_bug.cgi?id=704097?

Comment 2 jason wang 2011-06-22 02:44:04 UTC
(In reply to comment #1)
> Jason,
> is it related to https://bugzilla.redhat.com/show_bug.cgi?id=704097?

Yes, looks related. 8193 also lacks the check of buffer availability before receiving packets. I can try this.

Comment 3 YangFeng 2011-06-24 06:11:12 UTC
In step 1, I start guest with 4 nics.
In step 3, launch 4 netperf client in host.  one netperf client per guest nic.

Comment 5 Ronen Hod 2011-07-31 13:38:51 UTC
Jason,
If the backport doesn't solve the problem, then we will reconsider the dev-ack+.
Thanks, Ronen.


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