linux-kernel - Re: howto boost write(2) performance?

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: <p73odf849rq.fsf@bingen.suse.de>
Date:	09 Oct 2007 16:56:09 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Michael Stiller <ms@...ale.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: howto boost write(2) performance?

Michael Stiller <ms@...ale.net> writes:
> 
> The write(2) performance is not good enough, the writer threads take to
> much time, and i ask you for ideas, howto to boost the write
> performance. 

You could use an O_DIRECT write if the data is suitably aligned
and your IO sizes are big enough (O_DIRECT is usually a loss
on small IOs). It will also be synchronous, but if you do it 
from a separate thread anyways that should be fine.

-Andi
-
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/