linux-kernel - Re: [PATCH v3 00/21] x86/resctrl: Make resctrl_arch_rmid

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 8 Apr 2022 18:30:40 +0100
From:   James Morse <james.morse@....com>
To:     20220217182110.7176-1-james.morse@....com, x86@...nel.org,
        linux-kernel@...r.kernel.org
Cc:     Fenghua Yu <fenghua.yu@...el.com>,
        Reinette Chatre <reinette.chatre@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        H Peter Anvin <hpa@...or.com>,
        Babu Moger <Babu.Moger@....com>,
        shameerali.kolothum.thodi@...wei.com,
        Jamie Iles <jamie@...iainc.com>,
        D Scott Phillips OS <scott@...amperecomputing.com>,
        lcherian@...vell.com, bobo.shaobowang@...wei.com,
        cristian.marussi@....com
Subject: Re: [PATCH v3 00/21] x86/resctrl: Make resctrl_arch_rmid_read()
 return values in bytes

Hi Cristian,

On 15/03/2022 12:10, Cristian Marussi wrote:
> I tested this on an Intel(R) Xeon(R) Gold 5120T trying to compare gathered
> resctrl monitor data with and without your series and see if results
> were consistent.
> 
> I started from this paper [0] from Intel itself for my basic setup with
> some minor variations:

[..]

> While doing that I collect in background (and out of node1 processors) all
> the mon_data from the lc_cos group every 100ms and dump those in a file one
> for each cache allocation mask. (mondata_LC_7f0_00f.txt etc)
> 
> I tested first against a v5.17-rc1 mainline without your series (named as
> 5.17.0-rc1-mainline in the results) and then again with your series on top
> (named as 5.17.0-rc1-00021-g21c69a5706a5). Got your series from [1].
> 
> Then I used gnuplot to see what was the 'profile' of this data with and
> without your series by plotting the LC process llc_occupancy data against
> time for each one of the runs with the differerent cache allocated.
> (each colored graphs represent a different run with a different
> cache allocation as reported)

> Hope this helps...

This is great, thanks!

Can I take this as a Tested-by?



Thanks,

James