Clocksource watchdog

Author: hryi

August undefined, 2024

Web* the watchdog marked the clocksource unstable * @tick_stable: Optional function called periodically from the watchdog * code to provide stable synchronization points * @wd_list: List head to enqueue into the watchdog list (internal) * @cs_last: Last clocksource value for clocksource watchdog ... WebFeb 13, 2024 · microseconds before reporting the clocksource to be unstable. + The default is based on a half-second clocksource watchdog + interval and NTP's …

[PATCH 0/4] clocksource: remove obsolete drivers

WebJul 2, 2024 · Jun 08 10:59:54 furusato kernel: clocksource: timekeeping watchdog on CPU10: Marking clocksource 'tsc' as unstable because the skew is too large: Jun 08 10:59:54 furusato kernel: clocksource: 'hpet' wd_now: 19202418 wd_last: 1888ba30 mask: ffffffff Jun 08 10:59:54 furusato kernel: clocksource: 'tsc' cs_now: 2e0ddd6a02e cs_last: … WebSince Kernel 5.14.X I would get clocksource watchdog errors and my PC automatically switching to HPET. This is due to upstream kernel changes that imposed much stricter limits on allowed TSC jitter and clock deviation between different CPU cores. It caused repeated attempts to retry at syncing them to timeout aswell. atlanta to sri lanka

[PATCH v2 1/4] clocksource: Avoid accidental unstable marking of …

WebIf the clocksource which should be unbound is the current clocksource and no fallback can be found, unbind returns -EBUSY. This does not support the unbinding of a clocksource which is used as the watchdog clocksource. … WebJun 27, 2024 · The Center for Media and Democracy publishes SourceWatch to track corporations. We provide well-documented information about corporate public relations … WebFeb 22, 2010 · A linux kernel uses clocksource for doing many activities. I am doing some latency comparison benchmarking on my system and hence I would like to know the … pisa mental health

Re: [clocksource] 8901ecc231: stress-ng.lockbus.ops_per_sec

Clocksource framework · Linux Inside

WebLKML Archive on lore.kernel.org help / color / mirror / Atom feed * [PATCH 0/4] clocksource: remove obsolete drivers @ 2024-01-20 13:15 Arnd Bergmann 2024-01-20 13:15 ` [PATCH 1/4] timer: remove u300 driver Arnd Bergmann ` (4 more replies) 0 siblings, 5 replies; 16+ messages in thread From: Arnd Bergmann @ 2024-01-20 13:15 UTC … WebAug 3, 2024 · 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, the maximum number of retries in cs_watchdog_read() is exceeded and tsc is marked unstable. pisa methodWeb[ 2685.867873] clocksource: timekeeping watchdog on CPU117: hpet read-back delay of 57269ns, attempt 4, marking unstable [46215.471228] clocksource: timekeeping … atlanta to san juan

"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 ... " - Clocksource watchdog

Clocksource watchdog

WebMar 15, 2024 · [PATCH v2 09/14] torture: Enable clocksource watchdog with "tsc=watchdog" Date: Wed, 15 Mar 2024 18:18:56 +0000: From: "Paul E. McKenney" … WebFor clocksources which have a mask > 32-bit. * amount. That results in a shift value of 24 for a. * clocksource with mask >= 40-bit and f >= 4GHz. That maps to. * ~ 0.06ppm …

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Webdepends on CLOCKSOURCE_WATCHDOG: range 50 1000: default 125: help: Specify the maximum amount of allowable watchdog skew in: microseconds before reporting the … WebThis is the clocksource with the highest rating and thus it becomes the watchdog making unloading of the vmbus module impossible. Separate clocksource_select_watchdog() from clocksource_enqueue_watchdog() and use it on clocksource register/rating change/unregister. After all, lobotomized monkeys may need some love too.

WebMay 20, 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, … WebMay 3, 2015 · Clocksource tsc was the one being used. Then I tried acpi=off option and found that there were only two clocksources, tsc jiffies. However, tsc was not unstable …

Webbusy slowing down the reading of both the watchdog and the clocksource, an extra consecutive read of watchdog clock is being done to check this. The consecutive watchdog read delay is compared against. WATCHDOG_MAX_SKEW/2. If the delay exceeds the limit, we assume that. the system is just too busy. WebOne observed example is on a Intel Baytrail platform where TSC > is the main clocksource, HPET is disabled due to a hardware bug and acpi_pm > gets selected as the watchdog …

Webwdnow = 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. …

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 … pisa markets atlanta to sugar mountainWebAnd 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. > > … pisa ministerioWebMar 8, 2024 · Tue Mar 8 13:32:56 2024 kern.info kernel: [15471.543954] clocksource: timekeeping watchdog on CPU2: acpi_pm wd-wd read-back delay of 88558ns Tue Mar 8 13:32:56 2024 kern.info kernel: [15471.550963] clocksource: wd-tsc-wd read-back delay of 156165ns, clock-skew test skipped! pisa meteoWebIssue. 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 been hot-added [15013187.663927] CPU9 has been hot-added [15013187.673920] smpboot: Booting Node 0 Processor 7 APIC 0x7 [15013188.089777] kvm-clock: cpu 7, msr … atlanta toyota duluthWebJun 18, 2024 · (In reply to Artem S. Tashkinov from comment #1) > Could you try updating BIOS to the latest version? > > Could you try adding tsc=unstable to kernel boot arguments? > > There's bug 203183 where people experience the same issue, you may wanna > check it out. Same result with latest BIOS 2.G0 05/13/2024, AGESA 1.2.0.7: [ 2.083493] … atlanta to savannah gaWebMar 7, 2024 · + int "Clocksource watchdog maximum allowable skew (in μs)" + depends on CLOCKSOURCE_WATCHDOG + range 50 1000 + default 100 + help + Specify the maximum amount of allowable watchdog skew in + microseconds before reporting the clocksource to be unstable. + endmenu endif pisa mission