X86 平台提供读取tsc的指令 rdtsc/rdtscp 可以用户态轻量获取tsc的值。相比vsdo提供的gettimeofday更高效。 可靠性 - reliable_tsc 但是了解下来,tsc有其弊端,作为时钟源存在很多问题: 频率受cpu频率影响,进入C-state的某些深度级别甚至会停止工作(不再跳动) SMP架构下core间不同步,意味着一个core上的tsc与其它core...
User application who relies on TSC sync may do above two steps check to confirm whether TSC is reliable or not. However, per the root causes of TSC problems, kernel may not able to test out all of unreliable cases. For example, it is still possible that TSC clock had the problem during...
no 早期的smp系统中,tsc可能不同步(vmware比较吊,用软件的方法保证了tsc的可靠性,所以直接在cpu flag中搞了一个tsc_reliable标志位)。 在芯片支持invariant tsc后服务器厂商一般在服务器启动的时候,在所有的cpu收到reset信号的时候开始以同样的频率计时。这样就比较可靠了。 Linux内核为了确保tsc可靠,在系统启动的时...
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“I AM DONE WITH TAYLOR SWIFT” became a recurring trending topic as the battle cry of faux-betrayed Swifties, irate that their personal fav track appeared in the setlist for a show when they weren’t in attendance. The celebrity turnout at Eras gigs also became a reliable topic of ...
and scalability of TSC.TSC was used to process different existing evaluated nuclear data,and then the results were compared with those from the similar code THERMR.The comparison results show that the processing results from TSC are in good agreement with those from THERMR,so TSC is reliable. ...
Answer: Well, I think to know each other over time is more important when making friends. Firstly, most people won’t show their real personality to strangers at first encounter nowadays. So the first impression is not as reliable as it was before. What we see and what we hear are proba...
Coevoets R, Arican S, Hoogeveen-Westerveld M: A reliable cell- based assay for testing unclassified TSC2 gene variants. Eur J Hum Genet 2009, 17(3):301-310.Coevoets R, Arican S, Hoogeveen-Westerveld M et al. A reliable cell-based assay for testing unclassified TSC2 gene variants. ...
（中车山东机车车辆有限公司，山东济南 晶闸管动态无功功率补偿装置（Thyristor Switched Capacitor，TSC）是一种新型电容补偿柜，是无功补 偿领域的更新换代产品，近几年在工业企业得到广泛应用。TSC装置的关键技术是对电容器投切开关晶闸管的触发 控制，装置解决了晶闸管投切电容器的投切判据检测和零电压触发问题，实现了...
我看fengtang也给了一个patch,把check_system_tsc_reliable()里面的nr_online_nodes <= 2的判断放宽到8 这个是不是可以测一下?感觉这个更合理一些。因为道理上来说,TSC如果可靠的话,就不应该用其他不可靠的clocksource来校验。 ZhangRui的patch,只是把refined-jiffies禁掉了,但其他不可靠的clocksource仍然可能会成为...