Date: Wed, 19 Aug 2009 21:37:38 GMT From: remko@FreeBSD.org To: piroman@myconfig.ru, remko@FreeBSD.org, freebsd-i386@FreeBSD.org Subject: Re: i386/137975: Not clearing of memory after file deletion from a ram-disk Message-ID: <200908192137.n7JLbcSb081133@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
Synopsis: Not clearing of memory after file deletion from a ram-disk State-Changed-From-To: open->closed State-Changed-By: remko State-Changed-When: Wed Aug 19 21:37:38 UTC 2009 State-Changed-Why: I think this is not a problem but misunderstanding about how FreeBSD's memory allocation works. As you see memory is being taken and 'released' after use, though not entirely; why? FreeBSD also uses the memory as caching mechanism. For example if you issue an ``ls`` and then do the ``ls`` again, you will see that the second time it will return much quicker; this is temporarily cached in memory to help you do repeated tasks quicker. If needed the memory is freed and used for 'more important' operations. On my systems I normally have 'limited' free memory available; I do not worry about this because I understand that it's the caching that 'takes' the memory and releases it when needed. Please ask around on the questions mailinglist if this was insufficient explanation. http://www.freebsd.org/cgi/query-pr.cgi?pr=137975
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200908192137.n7JLbcSb081133>