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 <alex.ben...@linaro.org>
Reviewed-by: Robert Foley <robert.fo...@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <phi...@redhat.com>
---
v4
- only attempt compute a bigger default_jobs is
multiprocessing.cpu_count > 1
---
tests/vm/basevm.py | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/tests/vm/basevm.py b/tests/vm/basevm.py
index 890bbc5549a..21f46d1957d 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
