RPI3 swap experiments
Mark Millard
marklmi at yahoo.com
Fri Jun 29 14:35:35 UTC 2018
On 2018-Jun-29, at 5:28 AM, Trev <freebsd-arm at sentry.org> wrote:
> Jun 29 20:20:35 rpi3 kernel: pid 66844 (c++), uid 0, was killed: out of swap space
>
> At the time of "out of swap" only 157M of the 4G swap was in use. The 4GB swap partition is on a 4GB USB2 memory key (da1p1), everything else is on the sdcard. There are no excessively long ms/w being recorded. There are no USB or other related errors.
Good to know.
> top and gstat stats leading up to the process being killed are below.
>
> last pid: 66931; load averages: 3.23, 3.14, 3.25 up 0+03:18:04 20:20:16
> 47 processes: 3 running, 44 sleeping
>
> Mem: 647M Active, 25M Inact, 22M Laundry, 188M Wired, 97M Buf, 19M Free
> Swap: 4044M Total, 136M Used, 3908M Free, 3% Inuse
> 1 15 0 0 0.0 15 607 65.0 97.4 mmcsd0s2a
> 4 17 7 56 2.0 10 120 8.9 4.2 da1p1
>
> last pid: 66936; load averages: 3.29, 3.16, 3.25 up 0+03:18:08 20:20:20
> 47 processes: 4 running, 43 sleeping
>
> Mem: 664M Active, 5732K Inact, 27M Laundry, 184M Wired, 97M Buf, 19M Free
> Swap: 4044M Total, 138M Used, 3906M Free, 3% Inuse
> 1 13 0 0 0.0 13 527 58.8 74.7 mmcsd0s2a
> 4 34 2 20 2.9 32 2187 40.4 40.8 da1p1
>
> last pid: 66941; load averages: 3.35, 3.17, 3.25 up 0+03:18:13 20:20:25
> 47 processes: 3 running, 44 sleeping
>
> Mem: 644M Active, 524K Inact, 58M Laundry, 183M Wired, 97M Buf, 15M Free
> Swap: 4044M Total, 140M Used, 3904M Free, 3% Inuse
> 0 3 0 0 0.0 3 96 98.0 29.1 mmcsd0s2a
> 5 42 0 0 0.0 42 2205 88.9 99.8 da1p1
>
> last pid: 66946; load averages: 3.32, 3.17, 3.25 up 0+03:18:17 20:20:29
> 47 processes: 3 running, 44 sleeping
>
> Mem: 601M Active, 420K Inact, 96M Laundry, 184M Wired, 97M Buf, 20M Free
> Swap: 4044M Total, 150M Used, 3893M Free, 3% Inuse
> 1 1 0 0 0.0 1 96 169.5 16.9 mmcsd0s2a
> 0 102 5 32 158.3 97 1357 38.2 93.8 da1p1
>
> last pid: 66951; load averages: 3.38, 3.18, 3.26 up 0+03:18:21 20:20:33
> 47 processes: 3 running, 44 sleeping
>
> Mem: 271M Active, 339M Inact, 89M Laundry, 184M Wired, 97M Buf, 18M Free
> Swap: 4044M Total, 157M Used, 3887M Free, 3% Inuse
> 0 7 0 0 0.0 7 223 79.4 55.4 mmcsd0s2a
> 5 0 0 0 0.0 0 0 0.0 0.0 da1p1
>
> [OUT OF SWAP OCCURS HERE at 20:20:35 - 2 secs after the above and 2 secs before the below]
>
> last pid: 66957; load averages: 3.34, 3.18, 3.25 up 0+03:18:25 20:20:37
> 47 processes: 3 running, 44 sleeping
>
> Mem: 233M Active, 680K Inact, 296M Laundry, 184M Wired, 98M Buf, 187M Free
> Swap: 4044M Total, 157M Used, 3887M Free, 3% Inuse
> 0 0 0 0 0.0 0 0 0.0 0.0 mmcsd0s2a
> 6 0 0 0 0.0 0 0 0.0 0.0 da1p1
Just for reference/context:
uname -apKU
output? How would someone repeat your steps to set up
and start a similar test?
===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)
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