Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!schizo!rosen From: rosen@schizo.samsung.com (MFHorn) Newsgroups: comp.sys.dec Subject: Re: Comments on relative graphics performance: VAX3100 vs. DEC3100 Message-ID: Date: 4 Dec 89 15:18:27 GMT References: <12528@watcgl.waterloo.edu> Sender: news@samsung.COM Reply-To: rosen@samsung.com Distribution: comp Organization: Samsung Software America, Inc. Lines: 27 In-reply-to: idallen@watcgl.waterloo.edu's message of 3 Dec 89 01:42:59 GMT In article <12528@watcgl.waterloo.edu> idallen@watcgl.waterloo.edu writes: > From: "Ian! D. Allen [CGL]" > > DEC showed off a 8Mb VAXstation 3100 and a 16Mb DECstation 3100. The VAX > was running VMS; the RISC was running Ultrix. Both ran X windows. > > What surprised me was the lack of speed of the RISC machine when dealing with > the graphics display. The VAX (at one-fifth the CPU speed) with its hardware > assist moved pixels around the screen about twice as fast as the RISC. > (I was using the cut/drag feature of dxpaint and the xplaid demo as tests.) I used to use a VS3100, 8 Meg, 24 Meg swap, RZ23, Ultrix 3.0, pretty intensively as a big X-terminal, and it almost never even hesitated. The DS3100s I've used, 16 Meg, 65 Meg swap, RZ55, Ultrix 3.0, build kernels at least twice as fast, and move pixels around fast enough to have an animated background (spaceout). My VS3100 would have choked trying to do that. I haven't done much testing than that. -- Andy Rosen | rosen@samsung.com | "I got this guitar Samsung Software America | rosen@samsung.UUCP | and I learned how One Corporate Drive | (508) 685-7200 | to make it talk" Andover, MA 01810 | | -Thunder Road