Who's MCE?

Ward

On Sunday, December 22, 2002, at 10:34  AM, Jerry Yeager wrote:

> That is what your critter is wanting to use, so if you take the space 
> away, it thinks the world has suddenly tilted. I think MCE will swap 
> your old drive out for a newer, bigger one (mirroring the data that is 
> currently on the old onto the new one, and if you want also swap the 
> DVD/CD for a DVD/CD-Burner) all for a fee of course.
>
> I must beg your pardon. I based my typings on Terminal from some of 
> the comments that I have received from folks that never used a command 
> line before...
>
>                                                       Jerry
>
> On Sunday, December 22, 2002, at 09:33  AM, Dan Crutcher wrote:
>
>> Jerry:
>>
>> Here's what I get when I type "top" in the terminal (by the way, I'm 
>> not the guy that hates the terminal; I think that's Ward -- I'm just 
>> purely ignorant of it):
>>
>> MemRegions: num = 4998, resident = 92.9M + 13.8M private, ?110M shared
>> PhysMem: ?46.9M wired, ?108M active, ?275M inactive, ?429M used, 
>> 82.7M free
>> VM: 1.89G + 3.62M ??13087(0) pageins, 0(0) pageouts ???
>>
>> No pageouts, so I guess that's good. Right now I have 652 MB of free 
>> space on my hard drive.
>>
>> So what does all this tell you about my system? Is it really using 
>> 1.89 GB of virtual memory?
>>
>> Dan
>>
>> >Yup, you found it. OS-X does use virtual memory via the hard drive.
>> >When you start up it looks at how much physical RAM you have,
>> >how much free hard drive space you have available and then
>> >through some arcane formula previously known only to alchemists
>> >decides on how much hard drive to set aside as virtual memory.
>> >
>> >I know you hate the Terminal, but humor me this once... (smile)
>> >open Terminal and type the command:
>> >
>> >top
>> >
>> >then hit return
>> >
>> >toward the top of the page get back you might see something
>> >like:
>> >
>> >MemRegions: num = 3220, resident = 60.7M + 9.20M private, 76.5M 
>> shared
>> >PhysMem: ?43.0M wired, 92.8M active, ?177M inactive, ?313M used, 
>> ?303M free
>> >VM: 2.61G + 63.9M ??9907(0) pageins, 0(0) pageouts ???
>> >
>> >This is the virtual memory amount that has been set aside. if
>> >for some reason, drive space is low, OS-X gets very cranky. (I
>> >guess the alchemists didn't think about how cranky a machine
>> >can get, sicne this was also the dawning of logical
>> >positivism).
>> >
>> >Side note: If you see the pageouts number getting big, that
>> >means your system is, well, under stress as it is saving memory
>> >segments out to the drive (another reason why you want to use
>> >the shutdown option rather than turning the machine off !!)
>> >
>> > Jerry
>> >
>> >On Sunday, December 22, 2002, at 12:17 ?AM, Dan Crutcher wrote:
>> >
>> >
>> >I'm still trying to figure out my recent problems with X (which
>> >were cured eventually by a reinstall) and I may have found a
>> >clue. I again experienced some of the same symptoms, though not
>> >nearly so bad this time. And it happened in a situation very
>> >similar to the one a few days ago.
>> >
>> >There are at least two factors that were the same on both
>> >occasions: I had booted into OS 9 and I had performed an
>> >operation that created large files that nearly filled up my
>> >hard drive. When I tried to boot back into X (this time 2.1.3),
>> >I found that my desktop was unstable. The icons and the date
>> >and time on the right side of the menu bar were flashing on and
>> >off; my desktop icons had resized themselves to the default
>> >size (I had set them at 32x32) and the dock had returned to its
>> >default size and it was no longer hidden.
>> >
>> >Before the operation that nearly filled up my hard drive
>> >(postscripting some Quark pages that had large graphic links),
>> >I had about 1.0 GB of free space (on an 18.6 GB drive). After
>> >creating the new files I had about 135 MB of space left. This
>> >was the case each time that I encountered the problem.
>> >
>> >This time my system seemed to work more or less normally with
>> >the exception of the weird desktop stuff mentioned above, so I
>> >immediately deleted about 500 MB worth of files -- and
>> >immediately after doing so, my date, time and menu bar icons
>> >reappeared and no longer flashed on and off. I reset my icons
>> >and dock to their previous settings and restarted, and
>> >everything seems to be working fine now.
>> >
>> >It appears that, on my system at least, OS X gets real cranky
>> >when I don't leave it plenty of hard drive space to play with.
>> >Any idea why that might be the case? X doesn't have a virtual
>> >memory setting like previous versions did, but I'm wondering if
>> >it doesn't reserve some hard drive space for use as virtual
>> >memory. I have 512 MB of RAM, if that makes any difference.
>> >
>> >Any thoughts on this?
>> >
>> >Dan
>> >
>> >
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