Am 05.06.2015 um 17:40 schrieb Greg Lindahl:
On Fri, Jun 05, 2015 at 12:29:04PM +0200, Markus "Shorty" Uckelmann wrote:
How can I further debug this
problem and find out what's the culprit?
It's working as designed.
Sadly. It is just my first time I see this behaviour to this extent/on
so many servers. So you can say that I'm kind of a newbie in swapping ;)
If you don't explicitly lock things into memory, file I/O can and will
cause idle pages to get pushed out. It happens less often if you
manipulate swappines.
So, is a swappiness value of 60 not recommended for servers? I worked
with hundreds of servers (swappiness 60) on a social platform and
swapping very rarely happened and then only on databases (which had
swappiness set to 0). The only two differences (that I can see) to my
current servers are that I used Debian and there was no "extra" I/O from
backups.
I might be overstating the swapping thing. That's what I'm trying to
find out.
Cheers, Shorty
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