em driver packet loss in 6.2 amd64 (RELEASE and STABLE)
rob at hudson-trading.com
Mon Apr 2 22:03:53 UTC 2007
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.
On Mon, 2 Apr 2007, Rob Watt wrote:
> 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
> 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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