VSCode 1.107.1
devsense.phptools-vscode Version 1.63.18219
.../.vscode/extensions/devsense.phptools-vscode-1.63.18213-linux-x64/out/server/devsense.php.ls --vscode
used lot of CPU (RAM 10,1 time 176:33.88), as far as I remember, directly from start. Process survived closing VSCode.
trace -p <id>
strace: Process <id> attached
futex(0x56470baaac58, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 0, NULL, FUTEX_BITSET_MATCH_ANYCstrace: Process 4638 detached
<detached ...>
After stopped it (k... -9) and starting VSCode: everything is fine.