We currently limit TCG guests to -smp 1 but now we have added some aarch64 guests we can do better when running on x86_64 hardware. Raise the limit for TCG guests when it is safe to do so.
Signed-off-by: Alex Bennée <[email protected]> Reviewed-by: Robert Foley <[email protected]> Reviewed-by: Philippe Mathieu-Daudé <[email protected]> Message-Id: <[email protected]> diff --git a/tests/vm/basevm.py b/tests/vm/basevm.py index 890bbc5549a6..21f46d1957d9 100644 --- a/tests/vm/basevm.py +++ b/tests/vm/basevm.py @@ -551,8 +551,15 @@ def parse_config(config, args): def parse_args(vmcls): def get_default_jobs(): - if kvm_available(vmcls.arch): - return multiprocessing.cpu_count() // 2 + if multiprocessing.cpu_count() > 1: + if kvm_available(vmcls.arch): + return multiprocessing.cpu_count() // 2 + elif os.uname().machine == "x86_64" and \ + vmcls.arch in ["aarch64", "x86_64", "i386"]: + # MTTCG is available on these arches and we can allow + # more cores. but only up to a reasonable limit. User + # can always override these limits with --jobs. + return min(multiprocessing.cpu_count() // 2, 8) else: return 1 -- 2.20.1
