On 11/30/13, 11:16 AM, Gregory Szorc wrote:
On 11/30/13, 3:24 AM, smaug wrote:
(Before using unified mode I didn't have mem usage problems with gcc and
there was never any significant
difference in build times comparing to clang.)
I filed bug 944842 to have mach report swapping during builds.
Presumably the warning message will include tips on how to address it.
As of inbound just now, `mach build` will now print overall swap
activity at the end of every build (assuming psutil is available).
If your swap activity is beyond a hard-coded threshold, you get a big
"PERFORMANCE WARNING" at the end of the build.
We probably got the threshold "wrong" for a large audience, so
disagreeing with the alert is likely well-placed. We're very interested
in feedback to help tune the heuristic. Please let us know via bugs,
#build, or dev-builds what your experience is.
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