285 lines
5.2 KiB
Markdown
285 lines
5.2 KiB
Markdown
Memory usage
|
|
============
|
|
|
|
(Highly unscientific.)
|
|
|
|
Command used to gather static memory usage:
|
|
|
|
```sh
|
|
grep ^Vm "/proc/$(ps fax | grep [m]etrics-bench | awk '{print $1}')/status"
|
|
```
|
|
|
|
Program used to gather baseline memory usage:
|
|
|
|
```go
|
|
package main
|
|
|
|
import "time"
|
|
|
|
func main() {
|
|
time.Sleep(600e9)
|
|
}
|
|
```
|
|
|
|
Baseline
|
|
--------
|
|
|
|
```
|
|
VmPeak: 42604 kB
|
|
VmSize: 42604 kB
|
|
VmLck: 0 kB
|
|
VmHWM: 1120 kB
|
|
VmRSS: 1120 kB
|
|
VmData: 35460 kB
|
|
VmStk: 136 kB
|
|
VmExe: 1020 kB
|
|
VmLib: 1848 kB
|
|
VmPTE: 36 kB
|
|
VmSwap: 0 kB
|
|
```
|
|
|
|
Program used to gather metric memory usage (with other metrics being similar):
|
|
|
|
```go
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"metrics"
|
|
"time"
|
|
)
|
|
|
|
func main() {
|
|
fmt.Sprintf("foo")
|
|
metrics.NewRegistry()
|
|
time.Sleep(600e9)
|
|
}
|
|
```
|
|
|
|
1000 counters registered
|
|
------------------------
|
|
|
|
```
|
|
VmPeak: 44016 kB
|
|
VmSize: 44016 kB
|
|
VmLck: 0 kB
|
|
VmHWM: 1928 kB
|
|
VmRSS: 1928 kB
|
|
VmData: 36868 kB
|
|
VmStk: 136 kB
|
|
VmExe: 1024 kB
|
|
VmLib: 1848 kB
|
|
VmPTE: 40 kB
|
|
VmSwap: 0 kB
|
|
```
|
|
|
|
**1.412 kB virtual, TODO 0.808 kB resident per counter.**
|
|
|
|
100000 counters registered
|
|
--------------------------
|
|
|
|
```
|
|
VmPeak: 55024 kB
|
|
VmSize: 55024 kB
|
|
VmLck: 0 kB
|
|
VmHWM: 12440 kB
|
|
VmRSS: 12440 kB
|
|
VmData: 47876 kB
|
|
VmStk: 136 kB
|
|
VmExe: 1024 kB
|
|
VmLib: 1848 kB
|
|
VmPTE: 64 kB
|
|
VmSwap: 0 kB
|
|
```
|
|
|
|
**0.1242 kB virtual, 0.1132 kB resident per counter.**
|
|
|
|
1000 gauges registered
|
|
----------------------
|
|
|
|
```
|
|
VmPeak: 44012 kB
|
|
VmSize: 44012 kB
|
|
VmLck: 0 kB
|
|
VmHWM: 1928 kB
|
|
VmRSS: 1928 kB
|
|
VmData: 36868 kB
|
|
VmStk: 136 kB
|
|
VmExe: 1020 kB
|
|
VmLib: 1848 kB
|
|
VmPTE: 40 kB
|
|
VmSwap: 0 kB
|
|
```
|
|
|
|
**1.408 kB virtual, 0.808 kB resident per counter.**
|
|
|
|
100000 gauges registered
|
|
------------------------
|
|
|
|
```
|
|
VmPeak: 55020 kB
|
|
VmSize: 55020 kB
|
|
VmLck: 0 kB
|
|
VmHWM: 12432 kB
|
|
VmRSS: 12432 kB
|
|
VmData: 47876 kB
|
|
VmStk: 136 kB
|
|
VmExe: 1020 kB
|
|
VmLib: 1848 kB
|
|
VmPTE: 60 kB
|
|
VmSwap: 0 kB
|
|
```
|
|
|
|
**0.12416 kB virtual, 0.11312 resident per gauge.**
|
|
|
|
1000 histograms with a uniform sample size of 1028
|
|
--------------------------------------------------
|
|
|
|
```
|
|
VmPeak: 72272 kB
|
|
VmSize: 72272 kB
|
|
VmLck: 0 kB
|
|
VmHWM: 16204 kB
|
|
VmRSS: 16204 kB
|
|
VmData: 65100 kB
|
|
VmStk: 136 kB
|
|
VmExe: 1048 kB
|
|
VmLib: 1848 kB
|
|
VmPTE: 80 kB
|
|
VmSwap: 0 kB
|
|
```
|
|
|
|
**29.668 kB virtual, TODO 15.084 resident per histogram.**
|
|
|
|
10000 histograms with a uniform sample size of 1028
|
|
---------------------------------------------------
|
|
|
|
```
|
|
VmPeak: 256912 kB
|
|
VmSize: 256912 kB
|
|
VmLck: 0 kB
|
|
VmHWM: 146204 kB
|
|
VmRSS: 146204 kB
|
|
VmData: 249740 kB
|
|
VmStk: 136 kB
|
|
VmExe: 1048 kB
|
|
VmLib: 1848 kB
|
|
VmPTE: 448 kB
|
|
VmSwap: 0 kB
|
|
```
|
|
|
|
**21.4308 kB virtual, 14.5084 kB resident per histogram.**
|
|
|
|
50000 histograms with a uniform sample size of 1028
|
|
---------------------------------------------------
|
|
|
|
```
|
|
VmPeak: 908112 kB
|
|
VmSize: 908112 kB
|
|
VmLck: 0 kB
|
|
VmHWM: 645832 kB
|
|
VmRSS: 645588 kB
|
|
VmData: 900940 kB
|
|
VmStk: 136 kB
|
|
VmExe: 1048 kB
|
|
VmLib: 1848 kB
|
|
VmPTE: 1716 kB
|
|
VmSwap: 1544 kB
|
|
```
|
|
|
|
**17.31016 kB virtual, 12.88936 kB resident per histogram.**
|
|
|
|
1000 histograms with an exponentially-decaying sample size of 1028 and alpha of 0.015
|
|
-------------------------------------------------------------------------------------
|
|
|
|
```
|
|
VmPeak: 62480 kB
|
|
VmSize: 62480 kB
|
|
VmLck: 0 kB
|
|
VmHWM: 11572 kB
|
|
VmRSS: 11572 kB
|
|
VmData: 55308 kB
|
|
VmStk: 136 kB
|
|
VmExe: 1048 kB
|
|
VmLib: 1848 kB
|
|
VmPTE: 64 kB
|
|
VmSwap: 0 kB
|
|
```
|
|
|
|
**19.876 kB virtual, 10.452 kB resident per histogram.**
|
|
|
|
10000 histograms with an exponentially-decaying sample size of 1028 and alpha of 0.015
|
|
--------------------------------------------------------------------------------------
|
|
|
|
```
|
|
VmPeak: 153296 kB
|
|
VmSize: 153296 kB
|
|
VmLck: 0 kB
|
|
VmHWM: 101176 kB
|
|
VmRSS: 101176 kB
|
|
VmData: 146124 kB
|
|
VmStk: 136 kB
|
|
VmExe: 1048 kB
|
|
VmLib: 1848 kB
|
|
VmPTE: 240 kB
|
|
VmSwap: 0 kB
|
|
```
|
|
|
|
**11.0692 kB virtual, 10.0056 kB resident per histogram.**
|
|
|
|
50000 histograms with an exponentially-decaying sample size of 1028 and alpha of 0.015
|
|
--------------------------------------------------------------------------------------
|
|
|
|
```
|
|
VmPeak: 557264 kB
|
|
VmSize: 557264 kB
|
|
VmLck: 0 kB
|
|
VmHWM: 501056 kB
|
|
VmRSS: 501056 kB
|
|
VmData: 550092 kB
|
|
VmStk: 136 kB
|
|
VmExe: 1048 kB
|
|
VmLib: 1848 kB
|
|
VmPTE: 1032 kB
|
|
VmSwap: 0 kB
|
|
```
|
|
|
|
**10.2932 kB virtual, 9.99872 kB resident per histogram.**
|
|
|
|
1000 meters
|
|
-----------
|
|
|
|
```
|
|
VmPeak: 74504 kB
|
|
VmSize: 74504 kB
|
|
VmLck: 0 kB
|
|
VmHWM: 24124 kB
|
|
VmRSS: 24124 kB
|
|
VmData: 67340 kB
|
|
VmStk: 136 kB
|
|
VmExe: 1040 kB
|
|
VmLib: 1848 kB
|
|
VmPTE: 92 kB
|
|
VmSwap: 0 kB
|
|
```
|
|
|
|
**31.9 kB virtual, 23.004 kB resident per meter.**
|
|
|
|
10000 meters
|
|
------------
|
|
|
|
```
|
|
VmPeak: 278920 kB
|
|
VmSize: 278920 kB
|
|
VmLck: 0 kB
|
|
VmHWM: 227300 kB
|
|
VmRSS: 227300 kB
|
|
VmData: 271756 kB
|
|
VmStk: 136 kB
|
|
VmExe: 1040 kB
|
|
VmLib: 1848 kB
|
|
VmPTE: 488 kB
|
|
VmSwap: 0 kB
|
|
```
|
|
|
|
**23.6316 kB virtual, 22.618 kB resident per meter.**
|