# Linkerd Stress Testing

The `air-fryer` pallet makes use of Buoyant's [strest-grpc](https://github.com/BuoyantIO/strest-grpc) tool used to stress test the linkerd solution.
We have named this pallet `air-fryer` to accompany the `slow-cooker` solution used for load testing.

The pallet installs a gRPC server and a gRPC client pod on each node of the cluster. 
The `air-fryer` client will make 2000 requests per second to the gRPC servers.
This will run until the client pod is removed.

## Results

Every ten seconds the number of bytes, number of good/bad requests, request latency and jitter will be recorded by the client.
To see the output run:

```
k logs -n air-fryer air-fryer-client-<UUID> air-fryer-client
```

Please see the example output below:

```
# sending 2000 GET req/s
# time                iter bytes  good/bad   dur  latency min [p95  p99]  max  jitter p95 p99
2024-03-22T15:34:16Z   0    0.0B    4673/2   10s  L:      0   [  0   1 ]   10  J:     0   0
2024-03-22T15:34:26Z   1    0.0B    3786/5   10s  L:      0   [  0   1 ]    5  J:     0   0
2024-03-22T15:34:36Z   2    0.0B       0/6   10s  L:      0   [  0   0 ]    0  J:     0   0
2024-03-22T15:34:46Z   3    0.0B   17382/1   10s  L:      0   [  0   0 ]    8  J:     0   0
2024-03-22T15:34:56Z   4    0.0B   18132/0   10s  L:      0   [  0   0 ]    9  J:     0   0
2024-03-22T15:35:06Z   5    0.0B   18636/0   10s  L:      0   [  0   0 ]    9  J:     0   0
2024-03-22T15:35:16Z   6    0.0B   18081/0   10s  L:      0   [  0   0 ]    8  J:     0   0
2024-03-22T15:35:26Z   7    0.0B   17986/0   10s  L:      0   [  0   1 ]   11  J:     0   0
2024-03-22T15:35:36Z   8    0.0B   18432/0   10s  L:      0   [  0   0 ]   12  J:     0   0
2024-03-22T15:35:46Z   9    0.0B   18309/0   10s  L:      0   [  0   0 ]    9  J:     0   0
2024-03-22T15:35:56Z  10    0.0B   18332/0   10s  L:      0   [  0   0 ]   10  J:     0   0
```