Xref: utzoo comp.sys.mac.system:2955 comp.sys.mac.misc:7799 Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!psuvax1!rutgers!njin!princeton!siemens!pollux!fwb From: fwb@pollux.tmc.edu (Fred Brehm) Newsgroups: comp.sys.mac.system,comp.sys.mac.misc Subject: Re: System file modified after reboot and MMfix Message-ID: <50409@siemens.siemens.com> Date: 24 Jan 91 21:17:37 GMT References: Sender: news@siemens.siemens.com Followup-To: comp.sys.mac.system Distribution: comp Organization: Siemens Corporate Research Lines: 38 Michael K. Yee writes: > > I just noticed last night that my System 6.0.7 file appears to be > modified everytime I reboot (i.e. the modification time in Get Info > changes). I started checking because I installed the MMfix (memory > management fix INIT), and then later read in mac.digest that the > MMfix INIT may cause system troubles. So has anyone seen this > behavior?? Thanks in advance for any enlighment on this. This (Modified date changed) is normal behavior. It has nothing to do with MMinit. I don't know what gets changed, or why, though. This behavior is the cause of the "Skip System files" option in many disk backup applications. I also saw the report in the info-mac digest. Sometimes these kinds of reports are followed a few days later with a "sorry, it was (hardware, another init, cockpit error, ...)" message, so I don't panic with the first report of a problem. I do, however, pay attention when I add something new to a system. MMinit is installed on several IIfx and IIci (I think) around here. Nobody has had any problem yet, and there are lots of different combinations of init's, cdev's, da's, and applications on those machines. > BTW: MMfix did not seem to increase performance - at least, not > according to Speedometer 2.5. You have to watch out for benchmarks. They don't always measure the right thing. I don't know what Speedometer measures, but it probably isn't memory manager performance. The people who installed MMinit around here did not notice anything until they ran some image processing or graphics intensive application. Then, their reaction was something like "Wow! That's really a lot faster." Fred -- Frederic W. Brehm Siemens Corporate Research Princeton, NJ fwb@demon.siemens.com -or- ...!princeton!siemens!demon!fwb