Game booting process doesn't use all threads available when RPCS3 Scheduler is selected on Thread Scheduler settings (Linux specific)

[kpqi5858]

Quick summary

This is Linux specific issue.

When RPCS3 Scheduler or RPCS3 Alternative Scheduler is selected on Thread Scheduler settings, the game booting process (Compiling PPU modules, Building SPU cache, etc) doesn't use all threads available, making it considerably slower.

Details

On pthread_create(3) man page, it specifically mentions that child threads inherit the affinity mask of the calling thread. This causes the undesired behavior.

Linux-specific details
The new thread inherits copies of the calling thread's capability sets (see capabilities(7)) and CPU affinity mask (see sched_setaffinity(2)).

Attach a log file

N/A

Attach capture files for visual issues

No response

System configuration

No response

Other details

kd-11 said some words about this on discord