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Install nvidia profile to get around cuda p2 state issue, even without vulkan video encoding

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dec05eba
2026-05-02 01:57:17 +02:00
parent 2f23dcf29a
commit 02ed0cd4fc
3 changed files with 42 additions and 3 deletions
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37
src/main.cpp
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@@ -3571,7 +3571,43 @@ static void validate_args_with_capture_sources(args_parser &arg_parser, const st
}
static void install_cuda_no_stable_perf_limit() {
const char *home = getenv("HOME");
if(!home) {
fprintf(stderr, "gsr warning: install_cuda_no_stable_perf_limit: $HOME not set\n");
return;
}
char nv_profiles_path[4096];
snprintf(nv_profiles_path, sizeof(nv_profiles_path), "%s/.nv/nvidia-application-profiles-rc.d", home);
if(create_directory_recursive(nv_profiles_path) != 0) {
fprintf(stderr, "gsr warning: install_cuda_no_stable_perf_limit: failed to create directory: %s\n", nv_profiles_path);
return;
}
snprintf(nv_profiles_path, sizeof(nv_profiles_path), "%s/.nv/nvidia-application-profiles-rc.d/10-gsr-cuda-no-stable-perf-limit", home);
FILE *f = fopen(nv_profiles_path, "wb");
if(!f) {
fprintf(stderr, "gsr warning: install_cuda_no_stable_perf_limit: failed to create file: %s\n", nv_profiles_path);
return;
}
const char *profile_data =
"{\n"
" \"profiles\": [\n"
" {\n"
" \"name\": \"CudaNoStablePerfLimit\",\n"
" \"settings\": [\"0x166c5e\", 0]\n"
" }\n"
" ],\n"
" \"rules\": [\n"
" { \"pattern\": \"gpu-screen-recorder\", \"profile\": \"CudaNoStablePerfLimit\" }\n"
" ]\n"
"}\n";
fwrite(profile_data, 1, strlen(profile_data), f);
fclose(f);
}
int main(int argc, char **argv) {
@@ -3593,6 +3629,7 @@ int main(int argc, char **argv) {
signal(SIGRTMIN+6, save_replay_30_minutes_handler);
set_display_server_environment_variables();
install_cuda_no_stable_perf_limit();
// Linux nvidia driver 580.105.08 added the environment variable CUDA_DISABLE_PERF_BOOST to disable the p2 power level issue,
// where running cuda (which includes nvenc) causes the gpu to be forcefully set to p2 power level which on many nvidia gpus