[Buildroot] htop - "No btime in /proc/stat: Success"

Arnout Vandecappelle arnout at mind.be
Wed Oct 20 12:40:46 UTC 2021



On 20/10/2021 14:29, Steve wrote:
>  > Is /proc mounted?
> if "mount" outputting a line, among others, saying "proc on /proc type proc 
> (rw,relatime)" means that, then yes
> 
>  > What is the contents of /proc/stat?
> 
> # cat /proc/stat
> cpu  75 0 917 3631474 47 0 4 0 0 0
> cpu0 26 0 336 907872 1 0 2 0 0 0
> cpu1 23 0 536 907241 17 0 0 0 0 0
> cpu2 19 0 22 908242 7 0 0 0 0 0
> cpu3 7 0 23 908117 21 0 2 0 0 0
> intr 123556 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 169 2275 0 3 0 0 0 0 0 0 0 0 0 
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 60 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 644 0 0 0 0 
> 0 0 0 0 553 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
> 0 0 0 257 45046 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
> 0 0 0 0 0 0 0 0 74548 0 0 0
> ctxt 184781
> btime 0

  Ah, so btime is there, but it's zero, and htop apparently doesn't like that.

  I don't understand how btime can be 0 though. Is the uptime (in /proc/uptime) 
also 0?


  Regards,
  Arnout


> processes 184
> procs_running 1
> procs_blocked 0
> softirq 156657 0 70619 33 535 553 0 10351 72206 0 2360
> *Von:* "Arnout Vandecappelle" <arnout at mind.be>
> 
> On 20/10/2021 13:22, Steve wrote:
>  > Hello,
>  > a Linux image built with a recently downloaded buildroot, starting with the
>  > defconfig for RaspberryPi3 and adding some things (htop if it wasn't already,
>  > nano, openssh, openvpn; also the linux-menuconfig was altered, concerning USB
>  > driver stuff).
>  >
>  > When, in menuconfig, I search with / for htop, it shows that htop and all
>  > dependencies are met (all positive dependencies are [=y] and the one negative
>  > (static libs) is [=n].
>  > But when I call htop on the running system, I only get the line given in the 
> topic.
>  > What could be the problem?
> 
> This is squarely in the "this shouldn't happen" domain...
> 
> Is /proc mounted?
> 
> What is the contents of /proc/stat?
> 
> 
> Regards,
> Arnout
> 
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