Disk thrashing when opening a project
Disk thrashing when opening a project
- Subject: Disk thrashing when opening a project
- From: Simon Wilson <email@hidden>
- Date: Mon, 10 Nov 2008 11:48:25 +0100
I am working on two branches of my product in parallel:
1) 1.2, the main development branch
2) 1.1.x, the current maintenance branch
I have two Xcode projects for these two versions and spend 95% of my
time in 1.2. The 1.1.x branch's project isn't normally open.
When I get a bug report from a user I want to be able to open Xcode,
fix a typo or simple bug, re-build and test with minimum effort and
interruption to my work on the main development branch.
Unfortunately, Xcode thrashes away on my HD for a couple of minutes
after opening a new project. This not only interrupts my workflow
resulting in the task taking several minutes rather than just a couple
and:
1) Makes the build and test cycle very much longer as the compiler and
linker compete with the thrashing for access to the HD
2) The thrashing causes otherwise useful cached pages to be flushed
from the file system cache resulting in temporarily slower performance
when I return to my main development branch afterwards.
So my question is:
What is causing the thrashing? (My suspicion lies with the trawling of
symbols for code completion...)
Is there any way I can disable it on a per-project basis? Ideally I
would like to disable it in my maintenance projects by default and
only enable the function if I find myself working in the maintenance
project for longer periods.
Many thanks for any pointers.
Simon
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