linux-kernel - mmap vs. read/write performance/overhead revisited

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>] [day] [month] [year] [list]

Date:	Tue, 09 Jun 2015 21:02:34 +0200
From:	Wolfgang Draxinger <wdraxinger.maillist@...xit.de>
To:	linux-kernel@...r.kernel.org
Subject: mmap vs. read/write performance/overhead revisited

Hi!

So how is it _today_ with the current 4.x kernels when it comes to mmap 
vs read(2)/write(2)?

Either it's my Google-foo lacking or the most recent comment on the 
topic really dates back 15 years, but this is the only substancial 
background information relevant for Linux I did find:

http://marc.info/?l=linux-kernel&m=95496636207616&w=2

... that was 15 years ago, the beaver was not even conceived, not to 
speak going into detox, or even its predecessor. So I'm wondering, how 
relevant are the deliberations of back then today?

I've got a very practical application for which this deliberation is 
relevant, but I don't want to spam the list with a technical lecture on 
ultra high speed OCT imaging.

Cheers,

Wolfgang
--
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/