Received: by ATHENA-PO-2.MIT.EDU (5.45/4.7) id AA28295; Thu, 13 Jul 89 09:21:28 EDT From: Received: by ATHENA.MIT.EDU (5.45/4.7) id AA23986; Thu, 13 Jul 89 09:18:33 EDT Received: by E40-342F-2.MIT.EDU (5.61/4.7) id AA06464; Thu, 13 Jul 89 09:18:27 -0400 Message-Id: <8907131318.AA06464@E40-342F-2.MIT.EDU> To: sysdev@ATHENA.MIT.EDU Cc: staff@ATHENA.MIT.EDU Subject: re: R4 alpha server performance Date: Thu, 13 Jul 89 09:18:25 EDT fyi on the future. --dan ------- Forwarded Message From: rws@expo.lcs.mit.edu (Bob Scheifler) To: advisory@expo.lcs.mit.edu Subject: R4 alpha server performance Date: Wed, 12 Jul 89 19:17:49 -0400 The following is some performance information for the R4 alpha server. For those planning to track us and use our code, this message is to assure you that the gain will be worth the pain. For those not planning to track us, this is to hopefully give you something to worry about. :-) (For those on the Intrinsics list, this is a followup on messages about whether client-side gadgets are necessary.) Basic window objects have been reduced in size from 368 bytes in R3 to 132 bytes in R4. Basic GC objects have been reduced in size from 408 bytes to 116 bytes. Here are some selected performance numbers, using Digital's x11perf tool. The tests were run on a Sun 3/60 running SunOS 4.0.1. The servers were built with the standard Sun compiler. The mfb ddx graphics are essentially unchanged between the two servers tested, so the performance improvements should all be from dix and mi changes (although there may be some improvements due to a complete reimplementation of software cursors). R3 R4 (operations per second) Create and map subwindows (4 kids) 84.1 243.0 Create and map subwindows (50 kids) 65.1 200.0 Create unmapped window (4 kids) 434.0 978.0 Create unmapped window (50 kids) 423.0 971.0 Map window via parent (4 kids) 65.6 450.0 Map window via parent (50 kids) 199.0 813.0 Unmap window via parent (4 kids) 80.0 2190.0 Unmap window via parent (50 kids) 2280.0 11600.0 Destroy window via parent (4 kids) 136.0 315.0 Destroy window via parent (50 kids) 322.0 1420.0 Hide/expose window via popup (4 kids) 108.0 177.0 Hide/expose window via popup (50 kids) 176.0 410.0 Move window (4 kids) 97.9 156.0 Move window (50 kids) 55.2 79.9 Moved unmapped window (4 kids) 1200.0 2270.0 Moved unmapped window (50 kids) 1220.0 2280.0 Resize window (4 kids) 96.0 159.0 Resize window (50 kids) 58.7 89.0 Resize unmapped window (4 kids) 1170.0 2150.0 Resize unmapped window (50 kids) 1170.0 2160.0 Circulate window (4 kids) 40.5 61.6 Circulate window (50 kids) 9.2 33.2 Circulate Unmapped window (4 kids) 4070.0 6700.0 Circulate Unmapped window (50 kids) 2970.0 4420.0 The space and time improvements are the result of considerable efforts (rather equally divided) by Joel McCormack at Digital, and Keith Packard and Bob Scheifler at MIT. ------- End of Forwarded Message