linux-kernel - Re: [PATCH] Enhance perf to collect KVM guest os statistics from host side

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]

Message-ID: <878w9jdu7m.fsf@basil.nowhere.org>
Date:	Tue, 23 Mar 2010 14:49:01 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Soeren Sandmann <sandmann@...mi.au.dk>
Cc:	Joerg Roedel <joro@...tes.org>, Ingo Molnar <mingo@...e.hu>,
	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Avi Kivity <avi@...hat.com>,
	Sheng Yang <sheng@...ux.intel.com>,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	Marcelo Tosatti <mtosatti@...hat.com>,
	Jes Sorensen <Jes.Sorensen@...hat.com>,
	Gleb Natapov <gleb@...hat.com>,
	Zachary Amsden <zamsden@...hat.com>, zhiteng.huang@...el.com,
	Fr??d??ric Weisbecker <fweisbec@...il.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [PATCH] Enhance perf to collect KVM guest os statistics from host side

Soeren Sandmann <sandmann@...mi.au.dk> writes:
>
> To fix that problem, it seems like we need some way to have python
> export what is going on. Maybe the same mechanism could be used to
> both access what is going on in qemu and python.

oprofile already has an interface to let JITs export
information about the JITed code. C Python is not a JIT,
but presumably one of the python JITs could do it.

http://oprofile.sourceforge.net/doc/devel/index.html

I know it's not envogue anymore and you won't be a approved 
cool kid if you do, but you could just use oprofile? 

Ok presumably one would need to do a python interface for this
first. I believe it's currently only implemented for Java and
Mono. I presume it might work today with IronPython on Mono.

IMHO it doesn't make sense to invent another interface for this,
although I'm sure someone will propose just that.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/