Mercurial > hg
diff mercurial/revset.py @ 45515:89f0d9f87701
branchmap: add a cache validation cache, avoid expensive re-hash on every use
In a pathological `hg log` case, we end up executing the branchmap validity
checking twice per commit displayed. Or maybe we always do, and I just noticed
because it's really slow in this repo for some reason.
Before:
```
Time (mean ± σ): 9.816 s ± 0.071 s [User: 9.435 s, System: 0.392 s]
Range (min … max): 9.709 s … 9.920 s
```
After:
```
Time (mean ± σ): 8.671 s ± 0.078 s [User: 8.309 s, System: 0.392 s]
Range (min … max): 8.594 s … 8.816 s
```
Differential Revision: https://phab.mercurial-scm.org/D9023
author | Kyle Lippincott <spectral@google.com> |
---|---|
date | Wed, 16 Sep 2020 12:13:46 -0700 |
parents | 9b9071fabcd3 |
children | 17a12f53dd72 |