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Diffstat (limited to 'bench-manyfiles.sh')
-rwxr-xr-x | bench-manyfiles.sh | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/bench-manyfiles.sh b/bench-manyfiles.sh new file mode 100755 index 0000000..39e6c2e --- /dev/null +++ b/bench-manyfiles.sh @@ -0,0 +1,58 @@ +#!/bin/bash +# +# Run a simple benchmark of an incremental backup of many empty files, +# when the live data hasn't changed. +# +# Edit the if-statement towards the end to get a flamegraph to see +# where time is actually spent. +# +# This is very simplistic and could do with a lot of improvement. But +# it's a start. + +set -euo pipefail + +N=100000 + +TMP="$(mktemp -d)" +trap 'rm -rf "$TMP"' EXIT + +chunks="$TMP/chunks" +live="$TMP/live" + +mkdir "$chunks" +mkdir "$live" +python3 manyfiles.py "$live" "$N" + +cat <<EOF >"$TMP/server.yaml" +address: localhost:8888 +chunks: $chunks +tls_key: test.key +tls_cert: test.pem +EOF + +cat <<EOF >"$TMP/client.yaml" +server_url: https://localhost:8888 +verify_tls_cert: false +roots: + - $live +log: $TMP/client.log +EOF + +cargo build -q --release --all-targets + +OBNAM_SERVER_LOG=error cargo run -q --release --bin obnam-server -- "$TMP/server.yaml" >/dev/null & +pid="$!" + +cargo run -q --release --bin obnam -- --config "$TMP/client.yaml" init --insecure-passphrase=hunter2 + +# Initial backup. +cargo run -q --release --bin obnam -- --config "$TMP/client.yaml" backup >/dev/null + +# Incremental backup. +if true; then + /usr/bin/time --format=%e cargo run -q --release --bin obnam -- --config "$TMP/client.yaml" backup >/dev/null +else + cargo flamegraph --bin obnam -o obnam.svg -- --config "$TMP/client.yaml" backup >/dev/null +fi + +kill "$pid" |