linux-kernel - Re: [PATCH] free swap space when (re)activating page

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

Date:	Wed, 21 Feb 2007 18:09:45 +0300
From:	Al Boldi <a1426z@...ab.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] free swap space when (re)activating page

Rik van Riel wrote:
> Rik van Riel wrote:
> > ... because I think this is what my patch does :)
>
> Never mind, I see it now.
>
> The attached patch should be correct.

Your patch seems to improve the situation a little bit, but the numbers still 
look weird, especially for swap-in, which gets progressively slower.

RAM 512mb , SWAP 1G
#mount -t tmpfs -o size=1G none /dev/shm
#time cat /dev/full > /dev/shm/x.dmp
15sec
#time cat /dev/shm/x.dmp > /dev/null
58sec
#time cat /dev/shm/x.dmp > /dev/null
72sec
#time cat /dev/shm/x.dmp > /dev/null
85sec
#time cat /dev/shm/x.dmp > /dev/null
93sec
#time cat /dev/shm/x.dmp > /dev/null
99sec


Thanks!

--
Al

-
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/