diff mbox series

[v3,13/30] tests/vm: allow us to take advantage of MTTCG

Message ID 20200626181357.26211-14-alex.bennee@linaro.org
State New
Headers show
Series testing/next (gitlab, vm, docker) | expand

Commit Message

Alex Bennée June 26, 2020, 6:13 p.m. UTC 
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.bennee@linaro.org>

Reviewed-by: Robert Foley <robert.foley@linaro.org>

---
 tests/vm/basevm.py | 6 ++++++
 1 file changed, 6 insertions(+)

-- 
2.20.1
diff mbox series

Patch

diff --git a/tests/vm/basevm.py b/tests/vm/basevm.py
index 890bbc5549a..b8c60803e2d 100644
--- a/tests/vm/basevm.py
+++ b/tests/vm/basevm.py
@@ -553,6 +553,12 @@  def parse_args(vmcls):
     def get_default_jobs():
         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