From: Dave Jones <davej@redhat.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Fengguang Wu <fengguang.wu@intel.com>,
David Cohen <david.a.cohen@linux.intel.com>,
Al Viro <viro@zeniv.linux.org.uk>,
Damien Ramonda <damien.ramonda@intel.com>,
Jan Kara <jack@suse.cz>, David Rientjes <rientjes@google.com>,
Nishanth Aravamudan <nacc@linux.vnet.ibm.com>,
linux-mm <linux-mm@kvack.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] mm readahead: Fix sys_readahead breakage by reverting 2MB limit (bug 79111)
Date: Thu, 3 Jul 2014 15:05:06 -0400 [thread overview]
Message-ID: <20140703190506.GA24683@redhat.com> (raw)
In-Reply-To: <CA+55aFyqK90YJkjtHR2QGFt4Mvn=mj8a4FkB_8nbTTj3=jp3NA@mail.gmail.com>
On Thu, Jul 03, 2014 at 11:53:57AM -0700, Linus Torvalds wrote:
> On Thu, Jul 3, 2014 at 11:38 AM, Raghavendra K T
> <raghavendra.kt@linux.vnet.ibm.com> wrote:
> >
> > Okay, how about something like 256MB? I would be happy to send a patch
> > for that change.
>
> I'd like to see some performance numbers. I know at least Fedora uses
> "readahead()" in the startup scripts, do we have any performance
> numbers for that?
this got rolled up into systemd a while ago, so it's not just Fedora.
re: numbers, systemd-analyze and systemd-bootchart look like the way
to figure that out..
https://wiki.archlinux.org/index.php/Improve_boot_performance
Dave
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next prev parent reply other threads:[~2014-07-03 19:05 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-03 13:02 [PATCH] mm readahead: Fix sys_readahead breakage by reverting 2MB limit (bug 79111) Raghavendra K T
2014-07-03 15:41 ` Linus Torvalds
2014-07-03 18:11 ` Raghavendra K T
2014-07-03 18:22 ` Linus Torvalds
2014-07-03 18:29 ` Linus Torvalds
2014-07-03 18:38 ` Raghavendra K T
2014-07-03 18:50 ` Raghavendra K T
2014-07-03 18:53 ` Linus Torvalds
2014-07-03 18:56 ` Raghavendra K T
2014-07-03 19:05 ` Dave Jones [this message]
2014-07-03 19:43 ` John Stoffel
2014-07-03 21:58 ` Linus Torvalds
2014-10-03 20:57 ` Rafael Aquini
2014-07-03 18:35 ` Raghavendra K T
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