linux-kernel - Re: [PATCH RFC] fsio: filesystem io accounting cgroup

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: <20130709153907.GA17972@thunk.org>
Date:	Tue, 9 Jul 2013 11:39:08 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Konstantin Khlebnikov <khlebnikov@...nvz.org>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Michal Hocko <mhocko@...e.cz>, cgroups@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Sha Zhengju <handai.szj@...il.com>, devel@...nvz.org
Subject: Re: [PATCH RFC] fsio: filesystem io accounting cgroup

Another major problem with this concept is that it lumps all I/O's
into a single cgroup.  So I/O's from pseudo filesystems (such as
reading from /sys/kernel/debug/tracing/trace_pipe), networked file
systems such as NFS, and I/O to various different block devices all
get counted in a single per-cgroup limit.

This doesn't seem terribly useful to me.  Network resources and block
resources are quite different, and counting pseudo file systems and
ram disks makes no sense at all.

Regards,

					- Ted
--
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/