Re: evl ps cpu time reporting issue

> The most crucial one is that sometimes it reports excessive CPU usage, e.g. (running watch -n1 evl  ps -st):
> 
> 
>  CPU   PID   ISW     CTXSW     SYS       RWA       STAT     TIMEOUT      %CPU      CPUTIME       NAME
> ...
>    0   1011  6640    31157     37608     23656      W          -         1193652.1      0:642.101    thread:947:0xffffb3c0fe30:2214587712
> ...


I forgot to mention that most of the time this thread reports 0% usage as expected. To confirm this is not an issue with libevl's visualisation, but the issue is somewhere deeper, one further log:

# while sleep 0.1; do cat /sys/devices/virtual/thread/thread\:8011\:0xffff97cdfe30\:2491661632/stats; done

8926 41873 50471 29419 609329129 0
8927 41875 50474 29420 609388012 11133
8927 41876 50475 29420 609410796 0
8927 41878 50477 29420 609451945 0
8928 41880 50480 29420 609481429 0
8928 41881 50481 29420 609498449 0
8928 41883 50483 29420 609535063 0
8929 41886 50486 29420 609574946 0
8929 41887 50487 29420 609592925 0
8929 41889 50489 29420 609632058 1
8930 41891 50492 29420 609663628 0
8930 41892 50493 29420 609680457 0
8930 41894 50495 29420 609717002 0
8931 41896 50498 29420 609746761 0
8931 41897 50499 29420 609766180 0
8931 41898 50500 29420 609783920 0
8932 41901 50504 29420 609836897 0
8932 41902 50505 29420 609858481 0
8932 41903 50506 29420 609887230 0
8933 41906 50510 29420 609946013 20581947
8933 41907 50511 29421 609971602 0
8933 41908 50512 29422 609998161 0
8933 41909 50513 29423 610025640 0
8934 41912 50517 29424 610095202 5239
8934 41913 50518 29424 610113607 0
8934 41914 50519 29424 610137617 0


Best,
Giulio