[dpdk-dev] DPDK 17.02 RC-3 performance degradation of ~10%

[Hanoch Haim (hhaim)]

Hi Thomas and John,

We found that the performance degradation is not related to DPDK 17.02 for Intel XL710/ixgbe.  Now It is back to normal. The fix was to add a one unrelated line to a specific file. This probably changed the instructions trace. This line is not related to DP or CP. (We still don't fully understand that).
Mlx5 small degradation wasn't solved yet. 

Thanks,
Hanoh

-----Original Message-----
From: Thomas Monjalon [mailto:thomas.monjalon at 6wind.com] 
Sent: Tuesday, February 14, 2017 3:05 PM
To: Hanoch Haim (hhaim)
Cc: dev at dpdk.org; Mcnamara, John; Ido Barnea (ibarnea)
Subject: Re: [dpdk-dev] DPDK 17.02 RC-3 performance degradation of ~10%

2017-02-14 12:19, Mcnamara, John:
> From: Hanoch Haim (hhaim)
> > We (trex traffic generator project) upgrade DPDK version from 16.07 to
> > 17.02arc-3 and we experienced a performance degradation on the following
> > NICS:
[...]
> 
> Could you do a git-bisect to identify the change that caused this?

+1 for the bisect.
Please could you try to isolate the change causing the regression?