2022-08-19 03:51 AEST

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IDProjectCategoryView StatusLast Update
0000562mercuryBugpublic2022-08-18 20:01
Reporterwangp 
Assigned Tozs 
PrioritynormalSeverityminorReproducibilityalways
StatusresolvedResolutionfixed 
Product Version 
Target VersionFixed in Version 
Summary0000562: performance regression since rotd-2022-05-01
DescriptionThe attached module compiles much slower than it used to.

I have bisected the regression to commit 911bc5ea0c6565b9ae48132b153182627b3ddbea "Convert more modules to use var_tables". The slow down occurs during the Fully expanding equivalence types step.


% time ~/local/stow/mercury-srcdist-rotd-2022-04-29/bin/mmc -C parse_tables.m
0.63s user 0.03s system 99% cpu 0.662 total

% time ~/local/stow/mercury-srcdist-rotd-2022-05-01/bin/mmc -C parse_tables.m
7.51s user 0.03s system 99% cpu 7.553 total
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~0001202

zs (developer)

Fix committed 2022 aug 18.
+Notes

-Issue History
Date Modified Username Field Change
2022-08-03 10:37 wangp New Issue
2022-08-03 10:37 wangp File Added: parse_tables.m
2022-08-03 11:02 wangp Summary performance regression since rotd-2022-05-30 => performance regression since rotd-2022-05-01
2022-08-03 11:02 wangp Description Updated View Revisions
2022-08-03 15:53 zs Assigned To => zs
2022-08-03 15:53 zs Status new => assigned
2022-08-18 20:01 zs Status assigned => resolved
2022-08-18 20:01 zs Resolution open => fixed
2022-08-18 20:01 zs Note Added: 0001202
+Issue History