Date: Fri, 1 Feb 2002 14:29:48 -0800 (PST) From: Mikko Tyolajarvi <mikko@dynas.se> To: erichey2@attbi.com Cc: questions@freebsd.org Subject: Re: System slow when printer active Message-ID: <200202012229.g11MTmd33458@mikko.rsa.com> References: <20020131191605.23bff18e.erichey2@attbi.com>
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In local.freebsd.questions you write: >I am on 4.4 (standard GENERIC kernel). >I've setup the standard print controls using printcap and an if= that >invokes ghostscript for ps files. My printer (lpt0) is a laserjet. >When the printer is active, ie while the spooler is dumping data to the >printer, the system becomes very unresponsive. Mouse movements and >keystrokes are delayed for one or more seconds. >What causes this? Let me guess, "gs" uses up all available CPU, and the parallel port generates 75% interrupt load (have a look with "top" and "systat -vm"). There might be some tweaks you can do with your kernel configuration, or with lptcontrol, to make the parallel port more efficient, but I'm not sure (My printers have been moved to ethernet and USB :-). Check lpt(4) and lptcontrol(8). $.02, /Mikko -- Mikko Työläjärvi_______________________________________mikko@rsasecurity.com RSA Security To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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