Mateusz Guzik
17838b5869
cache: don't use cache_purge_negative when renaming
It avoidably scans (and evicts) unrelated entries. Instead take
advantage of passed componentname and perform a hash lookup
for the exact one.
Sample data from buildworld probed on cache_purge_negative extended
to count both scanned and evicted entries on each call are below.
At most it has to evict 1.
evicted
value ------------- Distribution ------------- count
-1 | 0
0 |@@@@@@@@@@@@@@@ 19506
1 |@@@@@ 5820
2 |@@@@@@ 7751
4 |@@@@@ 6506
8 |@@@@@ 5996
16 |@@@ 4029
32 |@ 1489
64 | 193
128 | 109
256 | 56
512 | 16
1024 | 7
2048 | 3
4096 | 1
8192 | 1
16384 | 0
scanned
value ------------- Distribution ------------- count
-1 | 0
0 |@@ 2456
1 |@ 1496
2 |@@ 2728
4 |@@@ 4171
8 |@@@@ 5122
16 |@@@@ 5335
32 |@@@@@ 6279
64 |@@@@ 5671
128 |@@@@ 4558
256 |@@ 3123
512 |@@ 2790
1024 |@@ 2449
2048 |@@ 3021
4096 |@ 1398
8192 |@ 886
16384 | 0
2020-08-20 10:06:50 +00:00
..
2020-08-20 00:52:53 +00:00
2020-08-18 20:20:45 +00:00
2020-08-20 00:38:32 +00:00
2020-04-24 01:27:25 +00:00
2020-08-19 02:51:17 +00:00
2020-08-18 19:48:04 +00:00
2020-08-19 02:51:17 +00:00
2020-08-13 20:48:14 +00:00
2020-08-15 18:46:26 +00:00
2020-07-20 16:12:14 +00:00
2020-06-21 03:39:26 +00:00
2020-08-19 19:55:12 +00:00
2020-06-04 17:20:58 +00:00
2020-08-20 10:05:46 +00:00
2020-08-18 20:59:10 +00:00
2020-08-17 17:07:05 +00:00
2020-08-04 19:44:43 +00:00
2020-08-20 00:52:53 +00:00
2020-08-20 10:06:50 +00:00
2020-05-25 22:12:04 +00:00
2020-08-13 20:48:14 +00:00
2020-07-31 11:28:09 +00:00
2020-08-16 12:59:43 +00:00
2020-08-17 13:51:25 +00:00
2020-08-17 20:18:01 +00:00
2020-08-18 22:46:46 +00:00
2020-08-19 17:59:06 +00:00
2020-08-15 11:37:44 +00:00
2020-06-25 23:59:16 +00:00
2020-08-11 15:46:22 +00:00
2020-07-21 19:56:13 +00:00
2020-06-14 00:10:18 +00:00
2020-07-06 08:50:11 +00:00
2020-07-23 23:48:18 +00:00
2020-08-07 19:32:54 +00:00
2020-08-18 16:51:04 +00:00
2020-08-11 00:26:45 +00:00
2020-08-07 23:06:40 +00:00
2020-08-20 10:05:46 +00:00
2020-08-04 21:49:13 +00:00
2020-08-20 10:05:46 +00:00
2020-08-19 02:51:17 +00:00
2020-08-18 11:36:38 +00:00
2020-04-17 06:04:20 +00:00