Re: [PATCH] timer (6/6): add cpu steal time fields to procps.

[Pavel Machek <pavel@suse.cz>]

Hi!

> [PATCH] timer (6/6): add cpu steal time fields to procps.
> 
> From: Martin Schwidefsky <schwidefsky@de.ibm.com>
> 
> Make use of the cpu steal time field in /proc/stat that has been
> introduces by the cputime patch. The new output of top looks like
> this:
> 
> top - 09:50:20 up 11 min,  3 users,  load average: 8.94, 7.17, 3.82
> Tasks:  78 total,   8 running,  70 sleeping,   0 stopped,   0 zombie
>  Cpu0 : 38.7%us,  4.2%sy,  0.0%ni,  0.0%id,  2.4%wa,  1.8%hi,  0.0%si, 53.0%st
>  Cpu1 : 38.5%us,  0.6%sy,  0.0%ni,  5.1%id,  1.3%wa,  1.9%hi,  0.0%si, 52.6%st
>  Cpu2 : 54.0%us,  0.6%sy,  0.0%ni,  0.6%id,  4.9%wa,  1.2%hi,  0.0%si, 38.7%st
>  Cpu3 : 49.1%us,  0.6%sy,  0.0%ni,  1.2%id,  0.0%wa,  0.0%hi,  0.0%si, 49.1%st
>  Cpu4 : 35.9%us,  1.2%sy,  0.0%ni, 15.0%id,  0.6%wa,  1.8%hi,  0.0%si, 45.5%s
>  Cpu5 : 43.0%us,  2.1%sy,  0.7%ni,  0.0%id,  4.2%wa,  1.4%hi,  0.0%si, 48.6%st
> Mem:    251832k total,   155448k used,    96384k free,     1212k buffers
> Swap:   524248k total,    17716k used,   506532k free,    18096k cached



You really need to write nice description into Documentation describing what cpu steal
time is. Will it be always 0 on  non-virtualized machines?
What about hyperthreading?



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64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms