#!/bin/sh
#
# Run obnam with various node and chunk sizes, in order to see which ones
# are optimal.

set -e

datadir="$1"

sizes="8kib 16kib 32kib 64kib 128kib 256kib 512kib 1024kib"
sizes="8kib 16kib"

conf="$(mktemp)"

rm -rf try-sizes
mkdir try-sizes
for node_size in $sizes
do
    for chunk_size in $sizes
    do
        echo --------------------------------
        echo "node=$node_size chunk=$chunk_size"
        cat << eof > "$conf"
[config]
chunk-size = $chunk_size
node-size = $node_size
eof
        output="try-sizes/${node_size}-${chunk_size}.seivot"
        $HOME/seivot/trunk/seivot \
            --output="$output" \
            --drop-caches \
            --obnam-config="$conf" \
            --generations=2 \
            --incremental=1 \
            --use-existing="$datadir" \
            --obnam-branch=. \
            --larch-branch=$HOME/larch/trunk \
            --description="node=$node_size chunk=$chunk_size" \
            --profile-name="real data"
    done
done

rm -f "$conf"