cleanup: improve perf populate_cmdline
#6905
| Job | Run time |
|---|---|
| 4m 41s | |
| 6m 41s | |
| 16m 43s | |
| 5m 13s | |
| 15m 34s | |
| 26m 33s | |
| 23m 23s | |
| 11m 6s | |
| 25m 7s | |
| 4m 27s | |
| 9m 28s | |
| 5m 21s | |
| 5m 14s | |
| 30m 39s | |
| 1m 2s | |
| 2m 27s | |
| 46m 35s | |
| 9m 5s | |
| 13m 33s | |
| 19m 11s | |
| 20m 35s | |
| 5h 2m 38s |