Date: Fri, 19 Dec 2008 10:37:46 -0500 From: FreeBSD <freebsd@optiksecurite.com> To: Jerry McAllister <jerrymc@msu.edu> Cc: freebsd-questions@freebsd.org Subject: SOLVED: Simple swap question Message-ID: <494BBFCA.5060305@optiksecurite.com> In-Reply-To: <20081219040719.GA83557@gizmo.acns.msu.edu> References: <494A693A.5050204@optiksecurite.com> <200812181028.18306.kirk@strauser.com> <20081218163632.GE5150@torus.slightlystrange.org> <494A820E.2030907@optiksecurite.com> <20081219040719.GA83557@gizmo.acns.msu.edu>
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Jerry McAllister a écrit : > On Thu, Dec 18, 2008 at 12:02:06PM -0500, FreeBSD wrote: > > >> Daniel Bye a écrit : >> >>> On Thu, Dec 18, 2008 at 10:28:18AM -0600, Kirk Strauser wrote: >>> >>>> On Thursday 18 December 2008 09:16:10 FreeBSD wrote: >>>> >>>>> Hi everyone, >>>>> >>>>> I have a FreeBSD 7.0-Release server that started to swap after an error >>>>> in a shell script (process spawning competition ;-) ). I killed the >>>>> shell and the RAM is now OK. The problem is that the swap is still used. >>>>> How can I "reset" the swap? >>>>> >>>> You don't. The system will handle it for you, I promise. :-) >>>> >>> And very well, too. >>> >>> You can prompt it to move pages back into RAM if you start using a swapped- >>> out process again - say, for example, a quiescent word processor had been >>> swapped out, you could get it back by raising it and starting to type. >>> >>> But as Kirk said, there really is no need. It's one of the kernel's many >>> jobs, and I'm inclined to leave it get on with it! >>> >>> Dan >>> >>> >> Thanks for your answer. I'm asking here because it's been several days >> and there is still used swap for data that should never be used anymore. >> If the kernel wants to keep it, why not move it to RAM now that there is >> some free? >> > > Why bother if it isn't being currently used? > > ////jerry > > Because this server is monitored by Nagios and it emails me every hour a warning because the swap is not 100% free (I know it's pretty extreme, but I want to know if the system is swapping). I just tried swapoff -a ; swapon -a and it worked great. Thanks everyone for your answer. Martin
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