Performance drop 30-40% for SPECjbb2005 and SPECjvm2008 benchmarks

Bug 120481 Jiri Hladky 1 participant 1 message Jun 22, 2016 3 messages not in the archive

lore

Share & tools

lore

A message that is not in the archive (sent off-list or not yet received): [email protected]/

A message that is not in the archive (sent off-list or not yet received): [email protected]

Jiri Hladky

author

2016-06-22 08:35 UTC #3 lore raw

Hi Peter,

I use this Java package.

java-1.7.0-openjdk

I think you don't thing you need to install Windows Manager. In fact, I'm using just plain text log file (${VER}/${DATE}.log) produced with this command

./run-specjvm.sh --benchmarkThreads 32 --iterations 1 --iterationTime 180 --warmuptime 90 xml.transform xml.validation 2>&1 | tee > ${VER}/${DATE}.log

Please let me finish bisecting. There are last two commits to be checked:

$ git log --pretty=oneline
e7904a28f5331c21d17af638cb477c83662e3cb6..6ecdd74962f246dfe8750b7bea481a1c0816315d
6ecdd74962f246dfe8750b7bea481a1c0816315d sched/fair: Generalize the
load/util averages resolution definition
2159197d66770ec01f75c93fb11dc66df81fd45b sched/core: Enable increased
load resolution on 64-bit kernels

I should be able to identify the commit which has caused this regression in few hours.

Jirka

Quoted 31 lines · Peter Zijlstra

Quoted 11 lines · On Wed, Jun 22, 2016 at 08:09:13AM +0000, [email protected]…
https://bugzilla.kernel.org/show_bug.cgi?id=120481
--- Comment #9 from Jirka Hladky <[email protected]> --- Created attachment 220921
--> https://bugzilla.kernel.org/attachment.cgi?id=220921&action=edit
Script to quickly reproduce the results
1) Obtain SPECjvm2008 here:
https://www.spec.org/download.html
2) Install Java 1.7
I don't have this, its not in Debian repositories. All I have is various versions of openjdk or gcj.
Quoted 2 lines
3) Install Window Manager - Benchmark is creating graphs and it needs WM for this step
This machine doesn't even have a monitor or keyboard attached, wtf would I install desktop stuff on it, that's fail.
Quoted 2 lines
I will upload list of rpm files I have installed on test machine in the next attachment.
Useless, I'm on Debian.
Quoted 2 lines
4) Copy the script from this attachment to directory where you have installed the benchmark. There should be script run-specjvm.sh
Please just use email; bugzilla is crap.