fa9b57bb1d
When GC is disabled, we set gcpercent to -1. However, we still use gcpercent to compute several values, such as next_gc and gc_trigger. These calculations are meaningless when gcpercent is -1 and result in meaningless values. This is okay in a sense because we also never use these values if gcpercent is -1, but they're confusing when exposed to the user, for example via MemStats or the execution trace. It's particularly unfortunate in the execution trace because it attempts to plot the underflowed value of next_gc, which scales all useful information in the heap row into oblivion. Fix this by making next_gc ^0 when gcpercent < 0. This has the advantage of being true in a way: next_gc is effectively infinite when gcpercent < 0. We can also detect this special value when updating the execution trace and report next_gc as 0 so it doesn't blow up the display of the heap line. Change-Id: I4f366e4451f8892a4908da7b2b6086bdc67ca9a9 Reviewed-on: https://go-review.googlesource.com/30016 Reviewed-by: Rick Hudson <rlh@golang.org> |
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Binary Distribution Notes
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