Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!gem.mps.ohio-state.edu!ginosko!ctrsol!lll-winken!arisia!sgi!shinobu!odin!ramoth.esd.sgi.com!msc From: msc@ramoth.esd.sgi.com (Mark Callow) Newsgroups: comp.sys.sgi Subject: Re: lampon/off Message-ID: <764@odin.SGI.COM> Date: 2 Oct 89 21:29:20 GMT References: <8081@medusa.cs.purdue.edu> Sender: news@odin.SGI.COM Reply-To: msc@ramoth.esd.sgi.com (Mark Callow) Distribution: usa Organization: Silicon Graphics Inc., Entry Systems Division Lines: 16 > Can anyone explain why on earth the calls to lampon() and lampoff() > take such a significant portion of a second on a Personal IRIS? Thanks > in advance. Thanks to the "magic" of write only registers, some central agent has to remember the current keyboard state and all requests to change that state must go through the agent. The chosen agent is the window server. Hence there is a network trip involved. -- From the TARDIS of Mark Callow msc@ramoth.sgi.com, ...{ames,decwrl,sun}!sgi!msc "There is much virtue in a window. It is to a human being as a frame is to a painting, as a proscenium to a play. It strongly defines its content."