2024 Clocksource_watchdog_max_skew

Clocksource_watchdog_max_skew_us

Author: gvch

August undefined, 2024

WebYet something to improve: [auto build test ERROR on mkp-scsi/for-next] [also build test ERROR on jejb-scsi/for-next linus/master v6.1-rc5 next-20241114] [If your patch is applied to the wrong git tree, kindly drop us a note. WebAs far as I can see, the only differences are: CLOCKSOURCE_WATCHDOG_MAX_SKEW_US 100 PREEMPT_DYNAMIC [Y/n/?] Cluster scheduler support … Press J to jump to the feed.

LKML: Waiman Long: Re: [PATCH] clocksource: Make clocksource watchdog ...

WebPerhaps something to improve: [auto build test WARNING on abelloni/rtc-next] [also build test WARNING on linus/master v6.1-rc1 next-20241020] [If your patch is applied to the wrong git tree, kindly drop us a note. WebMay 20, 2024 · It said root@LFS:# clocksource: timekeeping watchdog on CPU0: a... Stack Exchange Network. Stack Exchange network consists of ... About Us Learn more about Stack Overflow the company ... wd-tsc-wd read-back delay of 182144ns, clock-skew test skipped! clocksource: timekeeping watchdog on CPU0: acpi_pm wd-wd readback … foreign ach transactions

LKML: Chao Gao: Re: [clocksource] 8901ecc231: stress-ng.lockbus…

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 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 … WebTo improve this, add some heuristics to detect cases where the watchdog is delayed long enough for the instability detection to be likely to be wrong: - If the clocksource being tested (eg TSC) has counted so many cycles that converting to nsecs will overflow multiplication, *AND* the watchdog clocksource (eg HPET) shows that the watchdog timer ... Web*drivers/soc/qcom/smem.c:1056:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @ 2024-01-06 13:21 kernel test robot 0 siblings, 0 replies ... foreign acknowledgment for notary

[PATCH v2] scsi: sd_zbc: trace zone append emulation

[PATCH clocksource v2 0/7] Clocksource watchdog updates for …

WebJun 2, 2024 · [ 2.173224] tsc: Marking TSC unstable due to clocksource watchdog [ 2.173598] TSC found unstable after boot, most likely due to broken BIOS. Use … WebMay 29, 2024 · > [ 2.769608] clocksource: Switched to clocksource tsc-early > [ 3.263925] clocksource: wd-tsc-early-wd read-back delay of > 292215ns, clock-skew test skipped! foreign actorsWebNov 18, 2024 · A sample watchdog_max_skew readjustment output was: [ 197.771144] clocksource: timekeeping watchdog on CPU8: hpet wd-wd read-back delay of 92539ns [ 197.789589] clocksource: wd-tsc-wd read-back delay of 90933ns, clock-skew test skipped! foreign act 1946

"WebOn Tue, Nov 16, 2024 at 06:44:22PM -0500, Waiman Long wrote: > It was found that when an x86 system was being stressed by running > various different benchmark suites, the clocksource watchdog might > occasionally mark TSC as unstable and fall back to hpet which will > have a signficant impact on system performance. > The current watchdog … " - Clocksource_watchdog_max_skew_us

Clocksource_watchdog_max_skew_us

[PATCH v3 3/4] clocksource: Dynamically increase …

WebFeb 1, 2024 · It may also be too small when some kernel debug config options are enabled. So add a new Kconfig option CLOCKSOURCE_WATCHDOG_MAX_SKEW_US to allow kernel builders to have more control on the threshold for marking clocksource as unstable. Signed-off-by: Waiman Long Signed-off-by: Paul E. McKenney … WebSep 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 …

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WebThis prevents any useful analysis of why the skew occurred. Thus this patch tries to improve the output when we mark a clocksource as unstable, printing out the cycle last and now values for both the current clocksource and the watchdog clocksource. This will allow us to see if the result was due to a false positive caused by a problematic ... Web*RFC PATCH 0/3] Deal with alignment restriction on EP side @ 2024-01-13 9:03 Shunsuke Mie 2024-01-13 9:03 ` [RFC PATCH 1/3] PCI: endpoint: support an alignment aware map/unmaping Shunsuke Mie ` (3 more replies) 0 siblings, 4 replies; 12+ messages in thread From: Shunsuke Mie @ 2024-01-13 9:03 UTC (permalink / raw) To: Jingoo Han …

WebJun 3, 2016 · 'timekeeping watchdog: Marking clocksource 'tsc' as unstable, because the skew is too large' - may lead to connection and privacy ... 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.068803] clocksource jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns [ 0.149025] Switched to clocksource xen [ … WebJun 27, 2016 · [ 575.781329] clocksource: timekeeping watchdog on CPU23: Marking clocksource 'tsc' as unstable because the skew is too large: [ 575.998835] clocksource: 'tsc' cs_now: 1c1effead80 cs_last: 139efdabfa5 mask: ffffffffffffffff

Web*PATCH] Revert "x86/apic/x2apic: Implement IPI shorthands support" @ 2024-12-20 5:34 ` Baoquan He 0 siblings, 0 replies; 29+ messages in thread From: Baoquan He ... WebLKML Archive on lore.kernel.org help / color / mirror / Atom feed * [PATCH RFC] clocksource: Detect a watchdog overflow @ 2016-03-15 18:50 Gratian Crisan 2016-04-06 22:21 ` John Stultz 0 siblings, 1 reply; 4+ messages in thread From: Gratian Crisan @ 2016-03-15 18:50 UTC (permalink / raw) To: John Stultz, Thomas Gleixner; +Cc: linux-kernel, …

WebMay 10, 2024 · May 9 19:50:36 slack kernel: clocksource: timekeeping watchdog on CPU3: Marking clocksource 'tsc' as unstable because the skew is too large: May 9 19:50:36 slack kernel: clocksource: 'hpet' wd_nsec: 499463060 wd_now: 1da4296 wd_last: 16d236c mask: ffffffff May 9 19:50:36 slack kernel: clocksource: 'tsc' cs_nsec: …

WebJul 30, 2024 · current_clocksource shows clocksource system is using currently. Using echo xxx > current_clocksource can change current clocksource( jiffies is the default … foreign actors meaningWebMar 5, 2024 · * If both scale and freq are non-zero, calculate the clock* period, but bound below at 2*WATCHDOG_MAX_SKEW. However,* if either of scale or freq is zero, be … foreign actors doing american accent foreign actors in japanWebMay 23, 2024 · Use 'tsc=unstable'. [ 115.454679] sched_clock: Marking unstable (115712298090, -257671127)<- (115460381128, -5706726) [ 115.455825] clocksource: Switched to clocksource hpet [Step to reproduce] 1. use `powertop` to observe if CPU has ever enter PC10, 2. issue `xset dpms force off` to turn off screen and idle for some … foreign actressesWebThe watchdog's skew is controlled by MAX_SKEW_USEC and the CLOCKSOURCE_WATCHDOG_MAX_SKEW_US Kconfig option. However, these … foreign actors with long namesWebbe good enough for the clocksource watchdog. The watchdog's skew is controlled by MAX_SKEW_USEC and the CLOCKSOURCE_WATCHDOG_MAX_SKEW_US Kconfig … foreign actors in indiaWebApr 18, 2024 · If your hardware is not capable then this option only increases the size of the kernel image. config CLOCKSOURCE_WATCHDOG_MAX_SKEW_US int "Clocksource … foreign actresses in bollywood