Tsc warp

WebOn Wed, Mar 22, 2024 at 01:14:48PM +0800, Feng Tang wrote: > Hi, Paul > On Tue, Mar 21, 2024 at 04:23:28PM -0700, Paul E. McKenney wrote: > > Hello, Feng! > > I hope that things are going well for you and yours! > Thanks! > > First, given that the kernel can now kick out HPET instea of TSC in > > response to clock skew, does it make sense to permit … WebWarp on mouse move Just slightly move the mouse to trigger the mouse pointer to appear where you look. The mouse cursor will appear where you look on the screen just by …

tsc_sync.c - arch/x86/kernel/tsc_sync.c - Linux source code

WebJul 22, 2009 · Test both with and without processor.max_cstate=1. Test the guest with 2 vcpus and 8 vcpus. All test FAIL with big warps (gettimeofday, clock_gettime() TSC). The warp value of TSC is relative small (for example -465834 or -612732) compared to gtod/clock, the warp value of gtod/clock is very big. WebFeb 6, 2024 · Measured 255 cycles TSC warp between CPUs, turning off TSC clock. Marking TSC unstable due to check_tsc_sync_source failed Brought up 2 CPUs migration_cost=1606-- Thanks, Oliver # # Automatically generated make config: don't edit # Linux kernel version: 2.6.22.15 # Sun Dec 16 13:43:08 2007 # de rice chinese food https://mariamacedonagel.com

LKML: Waiman Long: Re: A couple of TSC questions

WebNov 24, 2006 · The new code only checks for TSC asynchronity - and if it can prove a time-warp (if it can observe the TSC going backwards when going from one CPU to another … WebSep 6, 2024 · Measured 227738976020810 cycles TSC warp between CPUs, turning off TSC clock. Marking TSC unstable due to check_tsc_sync_source failed Override clocksource tsc is unstable and not HRT compatible - cannot switch while in HRT/NOHZ mode With the mainline Kernel Version: 4.12.9-1.el6.elrepo.x86_64 WebFeb 20, 2024 · [ 0.243942] Measured 6357974304 cycles TSC warp between CPUs, turning off TSC clock. [ 0.243942] tsc: Marking TSC unstable due to check_tsc_sync_source … chronic regional pain syndrome australia

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Tsc warp

LKML: "Paul E. McKenney": Re: A couple of TSC questions

WebIf it's available allow up to three synchronization runs and if a time warp is detected the starting CPU can compensate the time warp via the TSC_ADJUST MSR and retry. If the third run still shows a deviation or when random time warps are detected the test terminally fails. WebThis is not called * if there is no TSC. */ static void check_tsc_warp (unsigned int timeout) {cycles_t start, now, prev, end; int i; start = rdtsc_ordered (); /* * The measurement runs for 'timeout' msecs: */ end = start + (cycles_t) tsc_khz * timeout; now = start; for (i = 0;; i ++) {/* * We take the global lock, measure TSC, save the * previous TSC that was measured …

Tsc warp

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Webkernel: [ 0.09204] TSC synchronization [CPU#0 -> CPU#1]: kernel: [ 0.09204] Measured 112995559 cycles TSC warp between CPUs, turning off TSC clock. kernel: [ 0.09204] …

Webmost commonly seeing this issue TSC synchronization [CPU#0 -> CPU#30]: Measured 60 cycles TSC warp between CPUs, turning off TSC clock. Marking TSC unstable due to check_tsc_sync_source failed Symptom:Red Hat Linux 6.5 and Suse Enterprise Linux 11.3 on B460 M4 4-socket configuration reports unstable TSC clock in 4 socket configuration and … WebNov 19, 2024 · Time series classification (TSC) task is one of the most significant topics in data mining. Among all methods for this issue, the deep-learning-based shows superior performance for its good adaption to raw series data and automatic extraction of features. However, rare eyes are kept on composing ensembles of these superior individual …

WebNote: Since your browser does not support JavaScript, you must press the Resume button once to proceed. WebApr 13, 2024 · > Interesting to know. I thought most of the TSC sync problems happen > in multiple socket system. IIRC, Waiman mentioned his platform is a > Cooper Lake which is for 4S or 8S platform, also Thomas and Peter > mentioned tsc sync issue on 8S platforms in other threads. > > And your consistent warp of 182 (91 * 2) and 273 (91 * 3) cycles sound

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WebNext in thread: el_es: "Re: TSC Problems (warp between CPUs)" The time-stamp counter on recent Intel processors is reset to zero each time the processor package has RESET … chronic regional pain syndrome type 2WebOct 13, 2011 · I took a look at the boot log. It's the same problem as before ... Measured 2391259932 cycles TSC warp between CPUs, turning off TSC clock. HPET: 3 timers in total, 0 timers will be used for per-cpu timer Switching to clocksource hpet ... Override clocksource acpi_pm is not HRT compatible. Cannot switch while in HRT/NOHZ mode ...soft lockups... d eric hall attorney indianaWebMar 14, 2024 · The TSC max_warp detection code in check_tsc_warp () is very timing. sensitive. Due to the possibility of false cacheline sharing, activities done in other CPUs … chronic regional pain syndrome kneeWebThis is not called * if there is no TSC. */ static cycles_t check_tsc_warp (unsigned int timeout) {cycles_t start, now, prev, end, cur_max_warp = 0; int i, cur_warps = 0; start = rdtsc_ordered (); /* * The measurement runs for 'timeout' msecs: */ end = start + tsc_khz * timeout; for (i = 0;; i ++) {/* * We take the global lock, measure TSC, save the * previous … de rice hiringWebDec 24, 2013 · Measured 39472034539 cycles TSC warp between CPUs, turning off TSC clock. tsc: Marking TSC unstable due to check_tsc_sync_source failed Motherboard = GA-X79-UP4 revision 1.1 Bios = F4 (was already shipped with most current version). CPU = Intel core i7 4930k @ 3.4Ghz (LGA 2011) derichbourg chatillonWebVitaly Kuznetsov. means that we should consider TSC as unstable. In some cases tsc tests are. Measured 6277 cycles TSC warp between CPUs, turning off TSC clock. This is, however, just a heuristic. On Hyper-V platform there are two good. page. TSC as unstable. In some cases tsc tests are able to detect the. derichbourg rachat cuivreWebDec 9, 2024 · Measured 38253476481 cycles TSC warp between CPUs, turning off TSC clock. We runs this on i7-8700, which supports constant TSC. I guess this is caused by inconsistent tsc_offset between vCPUs. The text was updated successfully, but these errors were encountered: chronic regional pain syndrome pt treatment