Date: Thu, 1 Feb 1996 12:19:37 +1030 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: jehamby@lightside.com (Jake Hamby) Cc: peter@jhome.DIALix.COM, freebsd-hackers@freebsd.org Subject: Re: Good news -- pipe stuff Message-ID: <199602010149.MAA20860@genesis.atrad.adelaide.edu.au> In-Reply-To: <Pine.AUX.3.91.960131102030.15314A-100000@covina.lightside.com> from "Jake Hamby" at Jan 31, 96 10:31:56 am
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Jake Hamby stands accused of saying: > > Another thing to look into, although I don't have a benchmark on this, but > FreeBSD has a nasty tendency to "bind" during heavy VM/disk activity. I > don't know if this is because the IDE driver is CPU intensive, or if this > affects people (to a lesser extent) with SCSI drives. It's just that when > the system starts paging out to disk, activity in other windows freezes up > too. I have 24MB of RAM on my box at home, and notice this quite often, > which is even more surprising since I don't push my system more than, say, > running a copy of Netscape, emacs, pine, and maybe a compile. This is a combination of IDE, and the X server being blocked on a pagefault that can't be serviced immediately because others are. Netscape is a real evil; it's not at all hard for it to eat >10M with only one browser open (remember the X server grows too). > Speaking of VM, I set up a system with only 8MB of RAM running FreeBSD, > and even though we made a 24MB swap partition, occasionally it fills up. > Both boxes are running 2.1.0-RELEASE. If it is not too difficult, I > would be REALLY grateful if we could add functionality to add swapfiles > and swap partitions to a running system. Even better would be the You can. See 'swapon' and 'vnconfig'. > ability to remove the swapfile without rebooting. Linux (and most That's not so easy. > SVR4's) have had this functionality for a LONG time. As it is, our BSD > limitation of only swapping to the b slice of any particular partition is > EXTREMELY frustrating in such situations where extra swap is temporarily > needed. Where is this limitation? You can swap anywhere you like. > ---Jake -- ]] Mike Smith, Software Engineer msmith@atrad.adelaide.edu.au [[ ]] Genesis Software genesis@atrad.adelaide.edu.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control (ph/fax) +61-8-267-3039 [[ ]] "wherever you go, there you are" - Buckaroo Banzai [[
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