linux-kernel - Re: [PATCH RESEND 9/9] block, trace: implement ioblame

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <CAOS58YPi5_jsCTqBpNxDyy+cDcr-8WvqUe9r1qBbjdCOT22Q3w@mail.gmail.com>
Date:	Wed, 11 Jan 2012 17:44:06 -0800
From:	Tejun Heo <tj@...nel.org>
To:	Namhyung Kim <namhyung.kim@....com>
Cc:	Namhyung Kim <namhyung@...il.com>, axboe@...nel.dk,
	mingo@...hat.com, rostedt@...dmis.org, fweisbec@...il.com,
	teravest@...gle.com, slavapestov@...gle.com, ctalbott@...gle.com,
	dhsharp@...gle.com, linux-kernel@...r.kernel.org,
	winget@...gle.com, Chanho Park <chanho61.park@...sung.com>
Subject: Re: [PATCH RESEND 9/9] block, trace: implement ioblame - IO tracer
 with origin tracking

On Wed, Jan 11, 2012 at 5:41 PM, Namhyung Kim <namhyung.kim@....com> wrote:
> OK, but that can be controlled from userspace, I guess? Do we have to care
> about that?

Otherwise, it's gonna be a pretty silly interface. If you want to
watch the TP, you have to restart the whole thing which also implies
intent number would change. And there still is the problem of losing
new intent events due to overflow. It just isn't the right interface
for the task.

-- 
tejun
--
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/