Re: Reducing memory consumption
Re: Reducing memory consumption
- Subject: Re: Reducing memory consumption
- From: Greg Guerin <email@hidden>
- Date: Thu, 12 Oct 2006 12:39:43 -0700
Mark Wagner wrote:
>17" Powerbook G4, already maxed out at a gigabyte.
Unless there's a lot of memory-hogs running, 1 GB RAM seems like it should
be enough to avoid swapping, even with Xcode and debugger running. I have
a dual G4 with 1 GB RAM, and I have to work pretty hard to get it to swap:
big processes with huge tracts of process-private (unshared) memory
allocations.
>Activity Monitor doesn't appear to indicate swapping.
Are you saying that Activity Monitor indicates no swapping is occurring, or
are you saying that it doesn't tell you about swapping?
The System Memory pane has a "Page ins/outs:" counter. A page-out is a
swap-out. If that number remains at 0, then your machine is not swapping
out. It may be swapping in, which is a page-in, but probably only if lots
of programs have large working sets of executables.
What does the Disk Activity pane show when this time-consuming context
switch occurs? If swapping is really occurring, there should be a deluge
of disk activity.
>Real is just how much physical RAM a process is using.
I think "real" is how much memory is really being used: RSIZE, in 'top'
terms. That is, I think it's "real as in allocated", rather than "real the
opposite of virtual". This interpretation would mean that RSIZE tells you
the total size of potentially swappable memory for that process. Other
values tell you what's being paged out and in overall, but none I see for
top or Act Mon that tell what's paging out per-process. Also, 'top -S' can
show system-wide swapping details that Activity Monitor doesn't, so you may
want to use it instead.
On a side note, can you change the setting in your mail client that's
generating the redundantly redundant "Re:" subject-line prefixes?
4-in-a-row is getting Re:-diculous. See subject lines here:
<http://lists.apple.com/archives/xcode-users/2006/Oct/index.html>
If it's a bug, please file a bug-report against Gmail.
-- GG
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