Re: High system times on Scaleway Cloud server

[Alexander Nasonov <alnsn%yandex.ru@localhost>]

Alexander Nasonov wrote:
> # vmstat -e | awk 'NR==1||NF<3||$(NF-1)>1000'
> interrupt                                         total rate type
> pmap pages remapped                             1380170 1231 misc
> pmap pages mapped (including remapped)         10246280 9140 misc
> pmap managed pages mapped                      10048848 8964 misc
> pmap user pages mapped                          9148349 8160 misc
> pmap pmap_protect non-exists pages              1831620 1633 misc
> pmap pv_entry free and unlink                   9008786 8036 misc
> pmap pv_entry allocate and link                 9134553 8148 misc
> 
> Are those numbers too high?

System times went up to 90-99% across all cores and I quickly reran
the command:

# vmstat -e|awk 'NR==1||NF<3||$(NF-1)>1000'
interrupt                                         total  rate type
pmap pages remapped                             6208493  1060 misc
pmap pages mapped (including remapped)         94106306 16078 misc   <-
pmap managed pages mapped                      93952303 16051 misc   <-
pmap user pages mapped                         92805605 15856 misc   <-
pmap pmap_protect managed pages                 7099051  1212 misc
pmap pmap_protect non-exists pages             22854070  3904 misc   <-
pmap pv_entry free and unlink                  92333957 15775 misc   <-
pmap pv_entry allocate and link                92464763 15797 misc   <-

Marked entries have about 2 times higher rates compared to the
previous measurement.

> # intrctl list; sleep 60; intrctl list

I also ran these commands but 90-99% system times didn't stay long.
I didn't notice anything unusual in the outputs.

-- 
Alex