Messages in this thread | | | From | Yubo Xie <> | Subject | RE: [PATCH] x86/Hyper-V: Fix hv sched clock function return wrong time unit | Date | Wed, 25 Mar 2020 18:57:14 +0000 |
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I use "time" to run some performance tests in our project under WSL2, but the result looks weird: the value of "real" is far from the sum of "user" + "sys".
-----Original Message----- From: Dexuan Cui <decui@microsoft.com> Sent: Wednesday, March 25, 2020 11:46 AM To: Yubo Xie <ltykernel@gmail.com>; KY Srinivasan <kys@microsoft.com>; Haiyang Zhang <haiyangz@microsoft.com>; Stephen Hemminger <sthemmin@microsoft.com>; Wei Liu <liuwe@microsoft.com>; daniel.lezcano@linaro.org; tglx@linutronix.de; Michael Kelley <mikelley@microsoft.com> Cc: Yubo Xie <yuboxie@microsoft.com>; linux-hyperv@vger.kernel.org; linux-kernel@vger.kernel.org; vkuznets <vkuznets@redhat.com>; stable@vger.kernel.org; Tianyu Lan <Tianyu.Lan@microsoft.com> Subject: RE: [PATCH] x86/Hyper-V: Fix hv sched clock function return wrong time unit
> From: linux-hyperv-owner@vger.kernel.org > <linux-hyperv-owner@vger.kernel.org> On Behalf Of Yubo Xie > Sent: Tuesday, March 24, 2020 8:20 AM > ... > sched clock callback should return time with nano second as unit but > current hv callback returns time with 100ns. Fix it.
Hi Yubo, I'm curious how you found the bug? :-) Did you notice some kind of symtom?
Thanks, -- Dexuan
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