Clocksource timekeeping watchdog on cpu
WebJan 4, 2024 · Here's the suspicious lines, first one is about the clocksource, no matter what I tried as grub options (here I tried clocksource=hpet), I end up with this : [ 2.143851] clocksource: timekeeping watchdog on CPU3: Marking clocksource 'tsc' as unstable because the skew is too large: [ 2.144876] clocksource: 'hpet' wd_nsec: 512439779 … Web1. Reject bogus watchdog clocksource measurements. 2. Add comments to classify bogus measurements. 3. Exponential backoff for load-induced bogus watchdog reads. Changes since v1: o Merge the "Reject bogus watchdog clocksource measurements" [1] series with the "Clocksource-watchdog classification and backoff" [2] series.
Clocksource timekeeping watchdog on cpu
Did you know?
WebIssue. Soft lockup occurs with below logs: Raw. [15013187.660325] CPU6 has been hot-added [15013187.663126] CPU7 has been hot-added [15013187.663454] CPU8 has … WebReal Time Clock (RTC) The RTC is independent of the system's CPU and any other chips. As it is energized by a small battery, it continues to tick even when the system is …
WebTo provide timekeeping for your platform, the clock source provides the basic timeline, whereas clock events shoot interrupts on certain points on this timeline, providing facilities such as high-resolution timers. sched_clock () is used for scheduling and timestamping, and delay timers provide an accurate delay source using hardware counters. WebFeb 13, 2024 · When clocksource_watchdog() detects excessive clocksource skew compared to the watchdog clocksource, it marks the clocksource under test as unstable and prints several lines worth of message. But that message is unclear to anyone unfamiliar with the code: clocksource: timekeeping watchdog on CPU2: Marking clocksource …
Web[ 8.749399] clocksource: timekeeping watchdog on CPU13: hpet read-back delay of 263750ns, attempt 4, marking unstable [ 12.044610] clocksource: timekeeping watchdog on CPU19: hpet read-back delay of 186166ns, attempt 4, marking unstable ... pr_warn("timekeeping watchdog on CPU%d: %s retried %d times before success\n", … WebAnd it > is not necessarily a bad thing for the kernel to diagnose cases where > high-stress workloads are being run on hardware that is not designed > for this sort of use. > > Nevertheless, it is quite possible that real-world use will result in > some situation requiring that high-stress workloads run on hardware > not designed to ...
WebApr 4, 2024 · For example, it has been observed on a 448 CPU system that has 8 NUMA nodes, as well as on a 192 CPU machine with 4 NUMA nodes, which did not meet the criteria for disabling the clocksource watchdog (applicable only to systems with 2 NUMA nodes or fewer). ... clocksource: timekeeping watchdog on CPU301: Marking …
WebBut due to the nature of TDX, switching between TD > and host takes more time. Then, the time window between two reads from > watchdog clocksource in cs_watchdog_read() increases, so does the > probability of the two reads being interrupted by whatever on host. Then, > sometimes, especially when there are heavy workloads in both host and TD ... forehead that sticks outWebMay 19, 2024 · root@LFS:# clocksource: timekeeping watchdog on CPU0: acpi_pm wd-wd readback delay of 643744ns clocksource: wd-tsc-wd read-back delay of 182144ns, … forehead thermometer at walgreensWebJun 18, 2024 · Same result with latest BIOS 2.G0 05/13/2024, AGESA 1.2.0.7: [ 2.083493] clocksource: timekeeping watchdog on CPU3: Marking clocksource 'tsc' as unstable because the skew is too large: [ 2.083499] clocksource: 'hpet' wd_nsec: 499419688 wd_now: 1b9b8a8 wd_last: 14c9beb mask: ffffffff [ 2.083501] clocksource: 'tsc' … forehead thermometer chemist warehouseWebAug 21, 2024 · 13. 36. Aug 17, 2024. #1. I'm getting "Marking TSC unstable due to clocksource watchdog" after some hours of uptime. System is Threadripper 3960x, Asus TRX40-pro with the latest available bios, 8x8G 3200 sticks. ```. [1198064.004082] clocksource: timekeeping watchdog on CPU46: hpet retried 2 times before success. … forehead thermometer for newbornWebSep 7, 2015 · wdnow = watchdog->read (watchdog); local_irq_enable (); If the host kernel preempts the guest between reading the. TSC and the watchdog, the resulting delta may go well over. the watchdog threshold, which is currently 62ms. Correct this issue by reading "wdnow" before and after reading. TSC, and retry if the delta between the two reads … forehead thermometer do you add a degreeWebApr 4, 2024 · For example, it has been observed on a 448 CPU system that has 8 NUMA nodes, as well as on a 192 CPU machine with 4 NUMA nodes, which did not meet the … forehead thermometer fsaWebA clocksource can be removed unconditionally even if there is no fallback clocksource available. clocksources in a module can be removed as well. Aside of that the registration part lacks a few sanity checks as well. The clockevents layer does not allow unregistration, but for reconfigurable hardware this is a must have feature. forehead thermometer for babies