Date: Tue, 14 Oct 1997 11:15:27 +0930 From: Greg Lehey <grog@lemis.com> To: amora@zoom.es Cc: questions@FreeBSD.ORG Subject: Re: Memory and swap size. Message-ID: <19971014111527.45005@lemis.com> In-Reply-To: <199710131430.QAA15481@silvester.zoom.es>; from Jesus A. Mora Marin on Sun, Oct 12, 1997 at 09:06:01PM %2B0000 References: <199710131430.QAA15481@silvester.zoom.es>
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On Sun, Oct 12, 1997 at 09:06:01PM +0000, Jesus A. Mora Marin wrote: > Hi! > > I have recently increased the RAM of my system from 16 to 32MB. The > only swap partition in my FreeBSD slice is 48 MB. > > It's a generally accepted rule of thumb that the swap size should be > at least twice the memory size, so this is not my case now. > > The questions are: > a) What are the possible negative consequences of not fulfilling this > recommendation? You might run out of swap. If you haven't changed your habits, it's not very likely. > b) I have automated the dumping of the system in case of panic, using > the swap partition as the dumpdev. Luckily, I haven't seen this > yet for almost two years, after fixing some problem with an CD-ROM > drive. Then, performing an postmortem debugging proved to be > helpful, so I don't want to disable this feature. Can I get into > trouble if a panic happens now? No. You need at least as much swap as memory in order to dump. Even if you don't have enough swap space, the system doesn't dump. Greg
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