storage-driver-test

run_layer_test.sh

This test randomly edits a 16KB file, of an image that contains 4096 16KB files (total image size is about 65536 kilobytes = 64mb).

The purpose of this test is to see how increasing the number of layers affects the build time and storage usage.

The base image was built by running:

podman build -f ./build/Dockerfile --build-arg="FILES_CREATE=4096" --build-arg="FILE_SIZE=16K" -t quay.io/dkwon17/storage-driver-test:layer-image .

The tests are run by running:

$ time podman build -f ./build/layertest/layertest_64.Dockerfile -t quay.io/dkwon17/storage-driver-test:test64 .
$ du -h -d 1 ~/.local/share/containers/storage

Running the tests sequentially

To run the tests sequentially with an increasing layer count, run:

$ mkdir results
$ ./scripts/run_layertest.sh > ./results/run_layertest 2>&1

The tests are run by running:

$ time podman build -f ./build/layertest/layertest_64.Dockerfile -t quay.io/dkwon17/storage-driver-test:test64 .
$ du -h -d 1 ~/.local/share/containers/storage

run_test.sh

This test creates multiple files with a size of 4K in a /test directory.

The purpose of this test is to see how writing an increasing number of data in one layer affects the build time and storage usage.

Running the test

$ NUM_FILES=1
$ time podman build -f ./build/Dockerfile --build-arg="FILES_CREATE=$NUM_FILES" --build-arg="FILE_SIZE=4K" . 
# check graphroot size
$ du -h -d 1 ~/.local/share/containers/storage

Running the tests sequentially

To run the tests sequentially with an increasing file count, run:

$ mkdir results
$ ./scripts/run_test.sh > ./results/run_test_out 2>&1

The tests are run by running:

$ time podman build -f ./build/layertest/layertest_64.Dockerfile -t quay.io/dkwon17/storage-driver-test:test64 .
# check graphroot size
$ du -h -d 1 ~/.local/share/containers/storage