Re: [dpdk-stable] [dpdk-dev] 18.11.3 (LTS) patches review and test

[Christian Ehrhardt <christian.ehrhardt@canonical.com>]

Azure image: 'Canonical UbuntuServer 18.04-DAILY-LTS latest':
>
> * PERF-DPDK-SINGLE-CORE-PPS-DS4: FAILED
> * VERIFY-DPDK-OVS: PASSED
> * VERIFY-DPDK-BUILD-AND-TESTPMD-TEST: PASSED
> * VERIFY-SRIOV-FAILSAFE-FOR-DPDK: PASSED
> * PERF-DPDK-MULTICORE-PPS-F32: FAILED

Hi Abhishek,
since you use the daily LTS image and see such a significant change
compared to before, could it by any chance be that this made you
switch from kernel 4.15 to 5.0.
Because by the normal HWE policy [1] this got into Bionic rebuilds and
it seems [2] the same is true for linux-azure kernel flavours.

Could you check your logs if the kernel version changed between the
old and the new runs?
An alternative might be to rerun 18.11.2 to see if it drops as well,
which might indicate that it wasn't 18.11.2 -> 18.11.3 but something
else like the kernel.

Not sure if that old kernel is ok, but you always can go back to what
a version was released with. So in this case
package linux-azure=4.15.0.1009.9 is still there and you could try
18.11.3 with that maybe?

Let me know if you need help changing kernels there.

[1]: https://wiki.ubuntu.com/Kernel/LTSEnablementStack
[2]: https://launchpad.net/ubuntu/+source/linux-azure/+publishinghistory