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Re: Weird memory numbers [message #20588 is a reply to message #20194]

Fri, 21 September 2007 11:43

xemul
Messages: 248
Registered: November 2005

Senior Member

Well, I've got it Smile

The answer is - this is normal. Point is that httpd uses private readonly mappings. Reading from these regions results in so called ZERO_PAGE appears in the address space. ZERO_PAGE is a reserved 4k chunk of memory which is used only for this or similar purposes. We do not account for this page, since it doesn't increase the RSS at all, but its presence is "accounted" with the pmap utility.

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[Message index]

		Weird memory numbers By: dagr on Thu, 13 September 2007 08:03
		Re: Weird memory numbers By: dev on Thu, 13 September 2007 08:17
		Re: Weird memory numbers By: dagr on Thu, 13 September 2007 08:21
		Re: Weird memory numbers By: dev on Thu, 13 September 2007 08:51
		Re: Weird memory numbers By: dagr on Thu, 13 September 2007 09:21
		Re: Weird memory numbers By: dev on Thu, 13 September 2007 09:32
		Re: Weird memory numbers By: dagr on Thu, 13 September 2007 11:07
		Re: Weird memory numbers By: dev on Thu, 13 September 2007 11:24
		Re: Weird memory numbers By: xemul on Wed, 19 September 2007 10:03
		Re: Weird memory numbers By: dagr on Wed, 19 September 2007 12:39
		Re: Weird memory numbers By: xemul on Fri, 21 September 2007 11:43
		Re: Weird memory numbers By: dagr on Sat, 22 September 2007 15:54
		Re: Weird memory numbers By: dev on Mon, 24 September 2007 07:03

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