Re: [Jfs-discussion] [fs] 05c5a0273b: netperf.Throughput_total_tps -71.8% regression

From: Rong Chen
Date: Thu May 14 2020 - 01:12:41 EST




On 5/14/20 12:27 PM, Christian Kujau wrote:
On Tue, 12 May 2020, kernel test robot wrote:
FYI, we noticed a -71.8% regression of netperf.Throughput_total_tps due to commit:
As noted in this report, netperf is used to "measure various aspect of
networking performance". Are we sure the bisect is correct? JFS is a
filesystem and is not touching net/ in any way. So, having not attempted
to reproduce this, maybe the JFS commit is a red herring?

C.

Hi,

The commit also causes -74.6% regression of will-it-scale.per_thread_ops:

in testcase: will-it-scale
on test machine: 8 threads Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz with 16G memory
with following parameters:

nr_task: 100%
mode: thread
test: unlink2
cpufreq_governor: performance
ucode: 0x21

I'll send another report for this regression.

Best Regards,
Rong Chen