Vipul, please disable HTML mixed mode completely in your mail client when posting on LKML. Such mails are silently dropped on the list server and never reach the public archives. vipul kumar <vipulk0511@xxxxxxxxx> writes: >> > On Tue, Jan 21, 2020 at 11:15 PM Thomas Gleixner <tglx@xxxxxxxxxxxxx> >> wrote: >> What's the frequency which is determined from the MSR? Something like >> ... > > tsc: Detected 1832.600 MHz processor vs. > tsc: Refined TSC clocksource calibration: 1833.333 MHz So the MSR readout is off by 0.4% > Attached full logs with patch and without patch. I can't find the debug output in them. Also: > [ 0.000000] Linux version 4.14.139-rt66 .... Can you please run that patch on top of current mainline please? I really want to see the debug output. Thanks, tglx