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Re: How is the privvmpages limit reached? [message #27340 is a reply to message #27101]

Fri, 15 February 2008 09:15

xemul
Messages: 248
Registered: November 2005

Senior Member

Privvmpages accounting works like this:

There are two kinds of mappings
1. the ones that are backed by some file on disk, i.e. MAP_SHARED and !MAP_ANON
2. the ones, that will go to swap on memory shortage, i.e. MAP_PRIVATE or MAP_ANON

The privvmpages limits the total length of mappings of the 2nd type only within the ve. This is OK, since on memory shortage pages of the 1st type will go to disk in existing area (which is limited by vzquota Wink

by the way)

So privvmpages limit can be exceeded easily.

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[Message index]

		How is the privvmpages limit reached? By: Wheel on Sat, 09 February 2008 12:45
		Re: How is the privvmpages limit reached? By: rickb on Sat, 09 February 2008 16:48
		Re: How is the privvmpages limit reached? By: Wheel on Sun, 10 February 2008 01:58
		Re: How is the privvmpages limit reached? By: rickb on Sun, 10 February 2008 03:00
		Re: How is the privvmpages limit reached? By: Wheel on Sun, 10 February 2008 03:11
		Re: How is the privvmpages limit reached? By: rickb on Sun, 10 February 2008 03:19
		Re: How is the privvmpages limit reached? By: xemul on Fri, 15 February 2008 09:15

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