Re: [BUG] net: performance regression on ixgbe (Intel 82599EB 10-Gigabit NIC)

2015-12-10 Thread Rick Jones
On 12/10/2015 06:18 AM, Otto Sabart wrote: *) Is irqbalance disabled and the IRQs set the same each time, or might there be variability possible there? Each of the five netperf runs will be a different four-tuple which means each may (or may not) get RSS hashed/etc differently. The irqbalance

Re: [BUG] net: performance regression on ixgbe (Intel 82599EB 10-Gigabit NIC)

2015-12-10 Thread Otto Sabart
Hi Rick, > *) It is good to be binding netperf and netserver - helps with > reproducibility, but why the two -T options? A brief look at src/netsh.c > suggests it will indeed set the two binding options separately but that is > merely a side-effect of how I wrote the code. It wasn't an

Re: [BUG] net: performance regression on ixgbe (Intel 82599EB 10-Gigabit NIC)

2015-12-07 Thread Otto Sabart
> Hi Ota, > > It looks like there were a few changes that went through that could be > causing the regression. The most obvious one that jumps out at me is commit > 72bfd32d2f84 ("ixgbe: disable LRO by default"). As such one thing you might > try doing is turning on LRO support via ethtool -k

Re: [BUG] net: performance regression on ixgbe (Intel 82599EB 10-Gigabit NIC)

2015-12-07 Thread Rick Jones
On 12/07/2015 03:28 AM, Otto Sabart wrote: Hi Ota, It looks like there were a few changes that went through that could be causing the regression. The most obvious one that jumps out at me is commit 72bfd32d2f84 ("ixgbe: disable LRO by default"). As such one thing you might try doing is

Re: [BUG] net: performance regression on ixgbe (Intel 82599EB 10-Gigabit NIC)

2015-12-04 Thread Rustad, Mark D
Otto Sabart wrote: > I probably found a performance regression on ixgbe (Intel 82599EB > 10-Gigabit NIC) on v4.4-rc3. I am able to see this problem since > v4.4-rc1. > > The bug report you can find here [0]. > > Can somebody take a look at it? > > [0]

Re: [BUG] net: performance regression on ixgbe (Intel 82599EB 10-Gigabit NIC)

2015-12-04 Thread Rick Jones
On 12/03/2015 08:26 AM, Otto Sabart wrote: Hello netdev, I probably found a performance regression on ixgbe (Intel 82599EB 10-Gigabit NIC) on v4.4-rc3. I am able to see this problem since v4.4-rc1. The bug report you can find here [0]. Can somebody take a look at it? [0]

[BUG] net: performance regression on ixgbe (Intel 82599EB 10-Gigabit NIC)

2015-12-03 Thread Otto Sabart
Hello netdev, I probably found a performance regression on ixgbe (Intel 82599EB 10-Gigabit NIC) on v4.4-rc3. I am able to see this problem since v4.4-rc1. The bug report you can find here [0]. Can somebody take a look at it? [0] https://bugzilla.redhat.com/show_bug.cgi?id=1288124 thanks, Ota

Re: [BUG] net: performance regression on ixgbe (Intel 82599EB 10-Gigabit NIC)

2015-12-03 Thread Alexander Duyck
On 12/03/2015 08:26 AM, Otto Sabart wrote: Hello netdev, I probably found a performance regression on ixgbe (Intel 82599EB 10-Gigabit NIC) on v4.4-rc3. I am able to see this problem since v4.4-rc1. The bug report you can find here [0]. Can somebody take a look at it? [0]