pmc-cloud-tools

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HI, i try to use the pmc cloud tools to check the performance issue in my k8s worker node, but seems the worker nodes doesn't support it, could you help...

chaoshwu

remove 2>&1 from perf stat to display errors

1

Redirecting stderr to stdout causes perf errors to be redirected to awk as normal stdin input. Then, awk silently discards them. This makes it hard to troubleshoot issues like unavailable...

afernandez90

``` ./tlbstat 1 10 ``` I had expected `tlbstat` to stop after 10 seconds, but instead it runs forever. This is due to the fact that `sleep $duration` is only...

martinvonwittich

For example with `de_DE.UTF-8`, `tlbstat` is obviously reporting incorrect data like 0 cycles/instructions: ``` server ~/pmc-cloud-tools # locale LANG=de_DE.UTF-8 LANGUAGE= LC_CTYPE="de_DE.UTF-8" LC_NUMERIC=de_DE.UTF-8 LC_TIME=de_DE.UTF-8 LC_COLLATE="de_DE.UTF-8" LC_MONETARY=de_DE.UTF-8 LC_MESSAGES="de_DE.UTF-8" LC_PAPER=de_DE.UTF-8 LC_NAME=de_DE.UTF-8 LC_ADDRESS=de_DE.UTF-8 LC_TELEPHONE=de_DE.UTF-8...

martinvonwittich

No output data, only column headers

3

Hi Brendan, I am a bit of a noob to low-level performance (might be missing something well known in the 6 person circle ;)). I was going through http://www.brendangregg.com/blog/2017-05-04/the-pmcs-of-ec2.html as...

ElijahLynn

Pitterling

IPC is off by as much as 20%. I'm still debugging this. I think I have a handle on what's wrong. But I wanted to give a heads up. If...

brendangregg

K_CYCLES/K_INSTR --> CPU * x 1000 ??

1

Hi Brendan, readme.md and script documentation define K_* values like this: ```bash # - K_CYCLES: CPU Cycles x 1000 # - K_INSTR: CPU Instructions x 1000 ``` I believe this...

Pitterling

Add support for some pre-skylake skus to tlbstat

2

Added support for some pre-skylake skus to tlbstat. Tested on Haswell, and Skylake. Basically this code checks for and adds support for the semi-equivalent PMCs to walk_active on older architectures,...

chiluk