From mboxrd@z Thu Jan  1 00:00:00 1970
From: Kay Sievers <kay.sievers@vrfy.org>
Date: Mon, 01 Jun 2009 13:30:04 +0000
Subject: Re: [GIT] Experimental threaded udev
Message-Id: <1243863004.28812.8.camel@yio.site>
List-Id: <linux-hotplug.vger.kernel.org>
References: <4A1EA138.10400@tuffmail.co.uk>
In-Reply-To: <4A1EA138.10400@tuffmail.co.uk>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: linux-hotplug@vger.kernel.org

On Mon, 2009-06-01 at 14:33 +0200, Kay Sievers wrote:

> Here is version 2 of the patch, with a few things corrected.

Pretty weird test, but it seems to survive on my Dual Core 1.5 GHz
laptop:

Create lots of devices:
  $ time (modprobe scsi_debug add_host max_luns2 num_tgts num_parts=2; udevadm settle)
  real	11m28.193s

23.000 block devices:
  $ find /sys/class/block/ | wc -l
  23824

72.000 sysfs devices:
  $ find /sys/ -name uevent | wc -l
  72224

We created 262 workers:
  $ ps afx | grep udevd | wc -l
  262

And 10 seconds later, all workers are gone:
  $ ps afx | grep udevd | wc -l
  2

Kay