linux-kernel - Re: [PATCH][v3] blktrace: conversion to tracepoints

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: <20081107143215.GR21867@kernel.dk>
Date:	Fri, 7 Nov 2008 15:32:16 +0100
From:	Jens Axboe <jens.axboe@...cle.com>
To:	"Alan D. Brunelle" <Alan.Brunelle@...com>
Cc:	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Mathieu Desnoyers <compudj@...stal.dyndns.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH][v3] blktrace: conversion to tracepoints

On Fri, Nov 07 2008, Alan D. Brunelle wrote:
> 
> > 
> > I'll apply this for 2.6.29. I'm assuming you have tested this as well?
> > 
> 
> FYI: I tested this on a 16-way AMD x86_64 box (128GB RAM, a couple of
> Smart Array (CCISS) P800's). Running Jens' for-2.6.29 git tree versus a
> recent Linus 2.6.28-rc3 tree. I was doing kernel makes (10 passes for
> both kernels), and found that things worked just fine. All values below
> are in seconds:
> 
> 2.6.28-rc3:
> 
>     Part     Min     Avg     Max     Dev
> -------- ------- ------- ------- -------
>    untar  17.996  22.565  23.522   1.690
>   mk-cfg   3.279   3.454   3.529   0.070
>  mk-kern 140.837 141.557 142.549   0.626
> mk-clean  10.460  11.604  12.710   0.758
> -------- ------- ------- ------- -------
>    Combd 172.941 179.180 181.600   2.470
> ======== ======= ======= ======= =======
>    %sys   7.67%   7.78%   8.03%   0.114
> 
> 
> Jens' origin/for-2.6.29:
> 
>     Part     Min     Avg     Max     Dev
> -------- ------- ------- ------- -------
>    untar  18.138  22.576  24.279   1.693
>   mk-cfg   3.270   3.483   3.751   0.118
>  mk-kern 141.290 142.115 142.666   0.439
> mk-clean   8.263   9.609  10.211   0.624
> -------- ------- ------- ------- -------
>    Combd 173.736 177.783 179.654   1.786
> ======== ======= ======= ======= =======
>    %sys   7.77%   7.85%   8.01%   0.074
> 
> 
> Not sure why the 'make clean' portion of the runs went noticeably better
> with the newer code, but in any event, I don't see much difference
> elsewhere, and for sure the blktrace portion of things worked correctly.
> [blktrace + blkparse + blkrawverify + btt all worked just fine out of
> the box.]

Thanks a lot for running that test Alan, I think it looks fine!

-- 
Jens Axboe

--
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/