Date: Sun, 15 Jan 2017 13:03:21 +0800 From: Julian Elischer <julian@elischer.org> To: Jia-Shiun Li <jiashiun@gmail.com>, freebsd-current <freebsd-current@freebsd.org>, John Baldwin <jhb@freebsd.org> Subject: Re: TSC as timecounter makes system lag [-> jhb] Message-ID: <b5409ad8-c971-28c2-3f46-f09ac18a7a87@elischer.org> In-Reply-To: <CAHNYxxN1ftsbJpts_N1Dv8YE1xE7eZ0H2BYDPyWeA8Oou0xGqQ@mail.gmail.com> References: <CAHNYxxPy4K37jKzw0%2Bs_AX8ha9yeB_S3dK46s4EuXjdNbULCmQ@mail.gmail.com> <CAHNYxxN1ftsbJpts_N1Dv8YE1xE7eZ0H2BYDPyWeA8Oou0xGqQ@mail.gmail.com>
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On 15/01/2017 10:11 AM, Jia-Shiun Li wrote: > On Fri, Jan 13, 2017 at 8:26 AM, Jia-Shiun Li <jiashiun@gmail.com> wrote: > >> Hi all, >> >> since 2 or 3 weeks ago, I noticed that my old Penryn-based Intel Pentium >> T4200 notebook lagged a lot. System time was running a lot slower, >> sometimes even looked like it freezed. Keystroke repeat rate was slow too. >> >> Since system time is slow, I tried to change timecounter from default TSC >> to HPET. And it resumed normal immediately. >> >> > Did a binary search. Turns out it was caused by r310177 "Enable > EARLY_AP_STARTUP on amd64 and i386 kernels by default." r310175 does not > have this issue. Removing this option from kernel config also solves it. making sure jhb notices this. > -Jia-Shiun. > _______________________________________________ > freebsd-current@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"
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