German | adjective | /ʃveːɐ/ | meaning: heavy
A single binary application with built-in web front-end that can produce cpu/mem load.
- Clone this repo
- Change working directory to your local cloned repo
$ go generate . && go build .
Once you built the application, just run it. Schwer, by default, binds to port 9999, but you
can specify a different port (between 1024-65535) if you like by using the -port flag:
$ ./schwer -port 19999
While Schwer is running, you can open the web front-end in your browser by visiting localhost:<port>.
You should see something like this:
The amount of CPU load percentage Schwer can produce can be specified by typing a number between
0 - 100 into the little input field and hitting enter or clicking the [Update] button.
The size of extra memory to be allocated (on top of the memory consumption of Schwer itself) can be
set by typing a positive integer (in MB) into the little input field and hitting enter or clicking
the [Update] button.
You can also use Schwer via its HTTP API.
| Endpoint | Method | Params | Response code | Description |
|---|---|---|---|---|
/cpu |
GET |
- |
200 OK | Returns an array of CPU utilisation levels per core (e.g. [49, 34, 50, 32] in case of a machine with 4 cores). |
/cpu |
POST |
pct - load level % (0-100) |
202 Accepted 400 Bad Request |
Sets the load level for Schwer to produce. |
/mem |
GET |
- |
200 OK | Returns a JSON object of memory stats in MB (e.g. {"total": 16384, "available": 5413, "used": 10966, "usedpct": 67}). |
/mem |
POST |
size - memory allocation size in MB |
202 Accepted 400 Bad Request |
Schwer allocates this amount of extra memory. |
Under the hood Schwer spins up a goroutine for each CPU core in order to make them busy. However, due to the nature of the Go runtime and scheduler, a goroutine cannot tell which CPU core it is running on. Hence, Schwer cannot control the load of a specific CPU core (i.e. one cannot set 70% load for CPU core #1 and 15% load for CPU core #2, etc.). For this reason Schwer tries to load all CPU cores equally.
- CPU load monitor
- Memory load monitor
- Make it work on Windows