[gem5-users] Re: FS mode partial reset stats

[Maxime France-Pillois via gem5-users]

Hi Bobby,

Your answer made me try with the latest Gem5 release (v20.1.0.0).
On this version, the stats reset works fine : all stats are correctly 
reset including the system.cpu.dcache stats.


The reported issue occurs with the v20.0.0.3 simulating a 32bits ARM core.
I run a linux kernel (gem5/v4.14) compiled with 
"arm-linux-gbueabihf-gcc" according to this documentation : 
https://www.gem5.org/documentation/general_docs/fullsystem/building_arm_kernel

Gem5 Full System was run with the following command line :

./build/ARM/gem5.opt configs/example/fs.py --caches --l2cache 
--kernel=./vmlinux --machine-type=VExpress_GEM5_V1 
--disk=./linux-aarch32-ael.img 
--bootloader=./system/arm/bootloader/arm/boot.arm 
--dtb-file=./system/arm/dt/armv7_gem5_v1_1cpu.dtb


Then on the target, this bug can be recreate simply running :
$> m5 dumpstats
$> m5 resetstats
$> m5 dumpstats

But this bug is now solved in the v20.1.0.0 release!
Thanks a lot!
Regards,

Maxime


On 06/10/2020 19:40, Bobby Bruce wrote:

Hey Maxime,

As far as I can tell, this is not expected behavior and may be a bug. 
To properly log this, and recreate it, could I bother you for a few 
more pieces of information?:


- What version of gem5 are you using?

- What OS are you using and what compiler did you compile with 
(probably not relevant but good for us to know).


- As much as you're willing to disclose, what are you running exactly? 
If you can, it'd be good if you could provide your config and the 
exact gem5 command you are using.


Kind regards,
Bobby

--
Dr. Bobby R. Bruce
Room 2235,
Kemper Hall, UC Davis
Davis,
CA, 95616

web: https://www.bobbybruce.net


On Tue, Oct 6, 2020 at 8:54 AM maxime.france-pillois--- via gem5-users 
mailto:gem5-users@gem5.org>> wrote:


Hi all,

Running an ARM cpu based system in Full System mode, I want to
reset stats during simulation using M5Ops " m5 reset_stats".
While almost all stat counters are resetted, some seem to keep
there previous values. Among them, all system.cpu.dcache stats.
Is this behavior expected? And if it is, can you tell me what
stats are not resetted by the m5 op reset_stats?
Thanks,

Maxime
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--
Maxime France-Pillois
Research Assistant
LIRMM
161 rue Ada
34095 Montpellier Cedex 5 - France

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[gem5-users] Re: FS mode partial reset stats

[Bobby Bruce via gem5-users]

Hey Maxime,

As far as I can tell, this is not expected behavior and may be a bug. To
properly log this, and recreate it, could I bother you for a few more
pieces of information?:

- What version of gem5 are you using?

- What OS are you using and what compiler did you compile with (probably
not relevant but good for us to know).

- As much as you're willing to disclose, what are you running exactly? If
you can, it'd be good if you could provide your config and the exact gem5
command you are using.

Kind regards,
Bobby

--
Dr. Bobby R. Bruce
Room 2235,
Kemper Hall, UC Davis
Davis,
CA, 95616

web: https://www.bobbybruce.net


On Tue, Oct 6, 2020 at 8:54 AM maxime.france-pillois--- via gem5-users <
gem5-users@gem5.org> wrote:

> Hi all,
>
> Running an ARM cpu based system in Full System mode, I want to reset stats
> during simulation using M5Ops " m5 reset_stats".
> While almost all stat counters are resetted, some seem to keep there
> previous values. Among them, all system.cpu.dcache stats.
> Is this behavior expected? And if it is, can you tell me what stats are
> not resetted by the m5 op reset_stats?
> Thanks,
>
> Maxime
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> gem5-users mailing list -- gem5-users@gem5.org
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>
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