Nevermind. After some more research it seems that we were having problems
with the risers cards on some of our servers. I will do some more testing
after the riser cards are replaced to see if we still have multicast drops
when using 6.2. Most likely it was purely a hardware problem. Since it was
the same exact behavior that we saw with the earlier version of the em
driver I figured it was the same bug resurfacing again.
-
Rob Watt
On Mon, 2 Apr 2007, Rob Watt wrote:
Hi,
In 6.1-RELEASE there were a number of em driver stability and performance
issues. We would regularly see packet loss at low to moderate load. A number
of patches were applied that completely fixed the problem for us.
We installed 6.2-RELEASE, but even though 6.2 is supposed to have a stable em
driver, we are noticing the same packet loss problem again. We updated to
STABLE, and we didn't see any packet drops in our first day of testing, but
today we are seeing packet drops again.
Has anyone else experienced this? Are there known problems with the STABLE em
driver?
Our hardware:
tyan s5372 motherboard (bios v1.05)
2 intel x5355 processors
adaptec aic7902 scsi daughter card
there are 4 em interfaces (2 on-board, 2 from an add-on card), but we
are currently only using em0
We have experienced the packet drop problem with a custom kernel and with the
RELEASE SMP kernel.
-
Rob Watt
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