Intel RDT
首先 spec, 从671页看起
https://software.intel.com/sites/default/files/managed/a4/60/325384-sdm-vol-3abcd.pdf
1. CAT
https://software.intel.com/en-us/articles/introduction-to-cache-allocation-technology
Here is the link to recorded presentation from Tony:
https://soco.intel.com/docs/DOC-2307814
2. CDP
3. sysfy
4. cache的科普文章,特别不错。
http://cenalulu.github.io/linux/all-about-cpu-cache/
http://www.mouseos.com/arch/cache.html
http://mil-embedded.com/articles/cache-utilization-safety-critical-multicore-applications/ cache partation
https://danluu.com/intel-cat/ intel introduce cache partation
https://www.findhao.net/easycoding/1694 introudce cache info in sys
5. Cache Monitoring Technology tools
https://software.intel.com/en-us/blogs/2014/06/18/benefit-of-cache-monitoring
6. tdt in kernel
https://lkml.org/lkml/2016/9/8/84 总结性文档
https://lkml.org/lkml/fancy/2016/9/8/70 task reap zombie
https://lkml.org/lkml/fancy/2016/9/8/74 核心,schedule support
搞了一个软件MS 避免延时。
rdmsr latency for IA32_PQR_MSR is very high (~250
cycles) this software cache is necessary to avoid reading the MSR to
compare the current CLOSid value.
- MSR write is only done when there is a task with different Closid is
scheduled on the CPU. Typically if the task groups are bound to be
scheduled on a set of CPUs, the number of MSR writes is greatly
reduced.
https://lkml.org/lkml/fancy/2016/9/8/81 Hot cpu update for code data prioritization
7. cqm perf improvement in kernel
https://lkml.org/lkml/2017/1/6/814
https://lkml.org/lkml/2017/1/6/719
Task associated wiht RMIDs. u32 *rmid in the task_struck。
Task associated wiht it's cgroup. a list in the arch_info of perf_cgroup called taskmon_list
https://lkml.org/lkml/2017/1/6/803 Scheduling support update
https://lkml.org/lkml/2017/1/6/808
8. Using Hardware Features in Intel® Architecture to Achieve High Performance in NFV
RDT 应用:
9. monitor support in kernel.
https://lkml.org/lkml/2017/6/26/619
10. Cache Coherency
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