home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.next.software
- Path: sparky!uunet!stanford.edu!leland.Stanford.EDU!marcu
- From: marcu@leland.Stanford.EDU (Marc Albert Ullman)
- Subject: Re: Optimizing Kernel Buffers
- Message-ID: <1992Aug14.091704.15202@leland.Stanford.EDU>
- Keywords: Menschliches Versagen (what's that in english?)
- Sender: news@leland.Stanford.EDU (Mr News)
- Organization: DSG, Stanford University, CA 94305, USA
- References: <1992Aug13.103230.6707@Informatik.TU-Muenchen.DE> <2A8A9B76.17419@noiro.acs.uci.edu> <1992Aug14.075240.8875@Informatik.TU-Muenchen.DE>
- Date: Fri, 14 Aug 92 09:17:04 GMT
- Lines: 38
-
- In article <1992Aug14.075240.8875@Informatik.TU-Muenchen.DE> MeyerGru@Informatik.TU-Muenchen.DE (Uwe Meyer-Gruhl) writes:
-
- >The actual number I am using is even larger, I use 384 buffers, but that
- >is probably too much for most people. So here is the corrected sdmach.binpatch
- >with 128 buffers:
- >
- >sdmach.binpatch:
- >---- CUT HERE ----
- >334079 166 116
- >334080 20 161
- >334081 43 116
- >334082 303 161
- >334083 4 116
- >334084 11 161
- >334085 70 116
- >334086 24 161
- >579602 0 1
- >579607 240 217
- >579608 214 206
- >604776 0 200
- >---- CUT HERE ----
-
- Hi,
-
- I had a quick question for you concerning this patch. I have been using
- a similar modification consisting of only the word at 604776 and I do see
- a noticeable difference in performance. Do have any evidence to confirm
- that it is necessary to NOP out the other instructions that you refer to?
-
- --Marc
-
- P.S. I'm glad to see that binpatch has proved to be useful. It's neat to
- hear about other people's experiences with *fixing* binaries.
-
- P.P.S I have been using 0x40 = 0100 = 64 = 512KB of buffers on a 40MB cube.
- Did you do any testing with differing values and if so what did you
- find? It would be nice if NeXT had some sort of adaptive algorithm
- based on the amount of total system RAM.
-