Closed StormYudi closed 3 years ago
Just started to write a concept, but i am not sure it is correct, since even after installing and running stress
CPU usage is really low.
{ "cores": 2, "before": 760732242, "now": 760761117, "usage": 0.00144375 }
Eh, I am sorry, but could you please try change "cpu seconds" to "cpu nano seconds" ?
The usage is already in nanoseconds according to the maintainer.
https://discuss.linuxcontainers.org/t/lxd-api-units-for-memory-disk-and-cpu-usage/6643/2 https://discuss.linuxcontainers.org/t/lxd-api-units-for-memory-disk-and-cpu-usage/6643/4
Okay, using stress -c 8
seems to show up now, not sure how reliable it is and if i should be expecting a 100% because it only has 2 vCPU limit.
760732242ns = 0.7607322s, 760761117ns=0.7607611s, You run stress test for one second, but it just use 0.00004s of CPU? I think there must be something wrong.....
Okay it seems to be working
I run the following command
stress -c 1 -v --timeout 30s
{
"data": {
"before": 333865385548,
"now": 334907737458,
"cores": 1,
"diff": 1042351910,
"percent": 104.235191
}
}
With 2 x vCPUs
{
"data": {
"before": 64644678797,
"now": 65685198546,
"cores": 2,
"diff": 1040519749,
"percent": 52.02598745
}
}
3x vCPUs
{
"data": {
"before": 93983394514,
"now": 95027642800,
"cores": 3,
"diff": 1044248286,
"percent": 34.8082762
}
}
4x vCPUs
{
"data": {
"before": 124745298267,
"now": 125789750428,
"cores": 4,
"diff": 1044452161,
"percent": 26.111304025
}
}
top
always reports 50% CPU usage once there is more than 1 core.
Hi, I love this project and thank you for your hard work! But can you add "CPU Usage %" in dashboard ? I know there is no such API in lxd, but I think maybe we can calculate the percent of CPU, such as :
CPU % = ( ( cpu seconds now - cpu seconds before ) / (duration time cores of the container)) 100
So we can know where the noise comes from :D