Mailinglist Archive: opensuse (1239 mails)

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Re: [opensuse] Re: XFS and openSUSE 12.1 [SOLVEDish]
  • From: Roger Oberholtzer <roger@xxxxxx>
  • Date: Thu, 13 Jun 2013 08:07:43 +0200
  • Message-id: <1371103663.24121.8.camel@acme.pacific>
On Wed, 2013-06-12 at 21:28 -0700, Linda Walsh wrote:

It sounded like he was on a not too fast computer that might bog down
if it had to scan 10G all at once -- might even take 5 seconds!

In fact it is on an extremely fast 16 core with oodles of RAM. The
processor is not taxed by all the activity.

Oi...It's NOT going to be changed by tweaking XFS
vars. XFS isn't what is holding it in memory. It's the kernel.

The suggestion was from the XFS list. But the variables to tweak are VM.

Linux is saving up scanning for more memory for all at once, as it
is more efficient that way.

You can play with values in /proc/sys -- but it will all be a kludge,
as what you really need is to avoid the cache altogether.

Or just find a way to keep it from thinking that all that tasty RAM is
available for it's evil purposes :) The cache system needs to curb RAM
intake. Go in a diet.

Yours sincerely,

Roger Oberholtzer

Ramböll RST / Systems

Office: Int +46 10-615 60 20
Mobile: Int +46 70-815 1696

Ramböll Sverige AB
Krukmakargatan 21
P.O. Box 17009
SE-104 62 Stockholm, Sweden

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