linux-kernel - Lower bound 0.05 on 15-Minute load?

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Message-Id: <55951765020000A10001AFA9@gwsmtp1.uni-regensburg.de>
Date:	Thu, 02 Jul 2015 10:50:13 +0200
From:	"Ulrich Windl" <Ulrich.Windl@...uni-regensburg.de>
To:	<linux-kernel@...r.kernel.org>
Subject: Lower bound 0.05 on 15-Minute load?

Hi!

I'm not subscribed, so plese CC: me for your replies.

When graphing the CPU load, I noticed that the 15-minute average never drops below 0.05, while the 5-minute load and the 1-minute load does
(Kernel 3.0.101-0.47.52-xen of SLES11 on x86_64).

Ist that a known bug? Interactive call of "uptime" seems to confirm my suspect:
windl> uptime
 10:41am  up 23 days 18:49,  1 user,  load average: 0.08, 0.05, 0.05
windl> uptime
 10:48am  up 23 days 18:56,  1 user,  load average: 0.00, 0.04, 0.05
windl> cat /proc/loadavg
0.00 0.04 0.05 1/108 9704

I'll attach a sample graph.

Regards,
Ulrich

Download attachment "Load.png" of type "image/png" (46898 bytes)