[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH v2 2/3] tests/vm: Do not abuse parallelism when
From: |
Philippe Mathieu-Daudé |
Subject: |
Re: [Qemu-devel] [PATCH v2 2/3] tests/vm: Do not abuse parallelism when KVM is not available |
Date: |
Fri, 12 Oct 2018 01:48:14 +0200 |
On Thu, Oct 11, 2018 at 4:46 AM Fam Zheng <address@hidden> wrote:
> On Mon, 10/01 01:23, Philippe Mathieu-Daudé wrote:
> > Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
> > ---
> > v2: Add get_default_jobs (Fam suggestion)
> > ---
> > tests/vm/basevm.py | 13 ++++++++++---
> > 1 file changed, 10 insertions(+), 3 deletions(-)
> >
> > diff --git a/tests/vm/basevm.py b/tests/vm/basevm.py
> > index 5a5fa09752..fc203e9f53 100755
> > --- a/tests/vm/basevm.py
> > +++ b/tests/vm/basevm.py
> > @@ -202,6 +202,13 @@ class BaseVM(object):
> > return self._guest.qmp(*args, **kwargs)
> >
> > def parse_args(vm_name):
> > +
> > + def get_default_jobs():
> > + if kvm_available():
> > + return multiprocessing.cpu_count() / 2
> > + else:
> > + return 1
> > +
> > parser = optparse.OptionParser(
> > description="VM test utility. Exit codes: "
> > "0 = success, "
> > @@ -214,7 +221,7 @@ def parse_args(vm_name):
> > help="image file name")
> > parser.add_option("--force", "-f", action="store_true",
> > help="force build image even if image exists")
> > - parser.add_option("--jobs", type=int,
> > default=multiprocessing.cpu_count() / 2,
> > + parser.add_option("--jobs", type=int, default=get_default_jobs(),
> > help="number of virtual CPUs")
> > parser.add_option("--verbose", "-V", action="store_true",
> > help="Pass V=1 to builds within the guest")
> > @@ -237,7 +244,7 @@ def main(vmcls):
> > return 1
> > logging.basicConfig(level=(logging.DEBUG if args.debug
> > else logging.WARN))
> > - vm = vmcls(debug=args.debug, vcpus=args.jobs)
> > + vm = vmcls(debug=args.debug, vcpus=args.jobs if kvm_available()
> > else 0)
>
> What's wrong with just using args.jobs? It defaults to 1 if kvm_available()
> returns false, so I don't think we need another condition here.
You are right, I missed that.
>
> > if args.build_image:
> > if os.path.exists(args.image) and not args.force:
> > sys.stderr.writelines(["Image file exists: %s\n" %
> > args.image,
> > @@ -248,7 +255,7 @@ def main(vmcls):
> > vm.add_source_dir(args.build_qemu)
> > cmd = [vm.BUILD_SCRIPT.format(
> > configure_opts = " ".join(argv),
> > - jobs=args.jobs,
> > + jobs=args.jobs if kvm_available() else 1,
>
> Again, can't we just use args.jobs?
>
> > verbose = "V=1" if args.verbose else "")]
> > else:
> > cmd = argv
> > --
> > 2.19.0
> >
>
> Fam