Stephen Hemminger wrote:
On Tue, 2004-10-05 at 02:15 +0200, Andi Kleen wrote:
On Mon, Oct 04, 2004 at 05:11:11PM -0700, Stephen Hemminger wrote:
Doing simple iperf test on new opteron with tg3 against existing Xeon
system. I am seeing something wierd, the connection hangs right away.
Is this a TSO bug.
Sender: BK latest (2.6.9-rc3) Tg3 (XX.YY.250.3)
Receiver: BK + netdev(jeffm) + dave's latest e100 (XX.YY.1.73)
Both machines are directly connected with a netgear 100mbit switch.
IT ISN'T A NETWORK PROBLEM. The problem is that iperf uses posix
pthread mutex's to sychronize and it looks like a futex bug.
might not be a futex bug - check to see if iperf does
any writes, fflushes, etc, in a signal handler - i.e.
that its signal handling is thread-safe. glibc now
makes it a fatal bug..
thanks,
Nivedita
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