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Re: [PULL v2 0/5] 9p queue (previous 2020-10-15)
From: |
Christian Schoenebeck |
Subject: |
Re: [PULL v2 0/5] 9p queue (previous 2020-10-15) |
Date: |
Mon, 19 Oct 2020 12:27:21 +0200 |
On Montag, 19. Oktober 2020 12:22:47 CEST Peter Maydell wrote:
> On Mon, 19 Oct 2020 at 11:19, Christian Schoenebeck
>
> <qemu_oss@crudebyte.com> wrote:
> > On Montag, 19. Oktober 2020 11:52:38 CEST Peter Maydell wrote:
> > > This emits a lot of new warnings during 'make check':
> > >
> > > PASS 27 qtest-arm: qos-test
> > > /arm/virt/virtio-mmio/virtio-bus/virtio-9p-device/virtio-9p/virtio-9p-te
> > > sts/ local/config qemu-system-arm: warning: 9p: degraded performance: a
> > > reasonable high msize should be chosen on client/guest side (chosen
> > > msize is <= 8192). See
> > > https://wiki.qemu.org/Documentation/9psetup#msize for details. PASS 28
> > > qtest-arm: qos-test
> > > /arm/virt/virtio-mmio/virtio-bus/virtio-9p-device/virtio-9p/virtio-9p-te
> > > sts/ local/create_dir
> > >
> > > PASS 54 qtest-i386: qos-test
> > > /i386/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-9p-pci/virtio-9p/virti
> > > o-9p -tests/local/config qemu-system-i386: warning: 9p: degraded
> > > performance: a reasonable high msize should be chosen on client/guest
> > > side (chosen msize is <= 8192). See
> > > https://wiki.qemu.org/Documentation/9psetup#msize for details. PASS 55
> > > qtest-i386: qos-test
> > > /i386/pc/i440FX-pcihost/pci-bus-pc/pci-bus/virtio-9p-pci/virtio-9p/virti
> > > o-9p -tests/local/create_dir
> >
> > One warning per test suite run (i.e. per architecture due to
> > warn_report_once()), yes. That performance warning is meant for end user
> > installations to remind them setting some (reasonable high) value for 9p
> > client parameter 'msize' on guest OS side. The warning triggers here
> > because the 9p test cases intentionally run with a small 'msize' to guard
> > edge cases.
> >
> > Would it be Ok for you to merge it with this performance warning for now?
> > I
> > can take care of silencing it before 5.2 release. It probably requires to
> > introduce a new CL option to suppress performance warnings like these, or
> > by finding a way to detect that we're currently just running qtests.
>
> The usual approach is to suppress this kind of warning by guarding
> it with if (qtest_enabled()) { ... }.
Ah, didn't see that one. I do that and resend, thanks!
Best regards,
Christian Schoenebeck
- [PULL v2 0/5] 9p queue (previous 2020-10-15), Christian Schoenebeck, 2020/10/17
- [PULL v2 1/5] tests/9pfs: change qtest name prefix to synth, Christian Schoenebeck, 2020/10/17
- [PULL v2 2/5] tests/9pfs: introduce local tests, Christian Schoenebeck, 2020/10/17
- [PULL v2 3/5] tests/9pfs: wipe local 9pfs test directory, Christian Schoenebeck, 2020/10/17
- [PULL v2 4/5] tests/9pfs: add virtio_9p_test_path(), Christian Schoenebeck, 2020/10/17
- [PULL v2 5/5] tests/9pfs: add local Tmkdir test, Christian Schoenebeck, 2020/10/17
- Re: [PULL v2 0/5] 9p queue (previous 2020-10-15), Peter Maydell, 2020/10/19