linux-kernel - RE: Discrepancies between Oprofile and vmstat II

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]

Date:	Mon, 27 Apr 2009 15:35:57 -0700
From:	"Styner, Douglas W" <douglas.w.styner@...el.com>
To:	Andi Kleen <andi@...stfloor.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"oprofile-list@...ts.sf.net" <oprofile-list@...ts.sf.net>,
	"Ma, Chinang" <chinang.ma@...el.com>,
	"willy@...ux.intel.com" <willy@...ux.intel.com>
Subject: RE: Discrepancies between Oprofile and vmstat II

>
>You mean "with higher value", right ?

Right.  Higher number of samples; lower count value.  I'm going to try it the other way as well (count value = 200000)

>
>It's still strange that it suddenly changed in 2.6.27 though. There
>shouldn't have been
>a difference there. So I still think it's a regression.
>

We only first saw it in 2.6.27.  It is possible that it goes back to 2.6.26 or 2.6.25.  We have not confirmed those kernels.

--
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/