Date: Wed, 20 Aug 1997 08:03:42 +0200 From: j@uriah.heep.sax.de (J Wunsch) To: hackers@FreeBSD.ORG Cc: searle@longacre.demon.co.uk (Michael Searle) Subject: Re: Fast measurement of used swap? Message-ID: <19970820080342.PN21690@uriah.heep.sax.de> In-Reply-To: <mBC2E0BBE@longacre.demon.co.uk>; from Michael Searle on Aug 19, 1997 17:48:43 %2B0000 References: <mBC2E0BBE@longacre.demon.co.uk>
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As Michael Searle wrote: > All the programs I've seen that do it use kvm, in fact using the > same piece of code from swapinfo. This is very slow (uses several > thousand syscalls) and also takes time proportional to the amount of > swap (whether this is used or not), so I don't want to do this > unless it's the only way. I'm afraid this is the only way. What is ``systat -vmstat'' using? I would assume this is the definitive reference implementation, since it's a system utility (as opposed to just a port). > (BTW, I'm using 2.1.0 if it matters.) I remember from merging the -current scheme into xperfmon++ that things got worse in later versions. Ah what, i might be confusing this with the network packet counting. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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