Update Copy composer benchmark (wal-g#1073)

benchmarks/copy-composer/copy-composer.md

@@ -11,6 +11,9 @@
 Backup storage: Yandex Object Storage
 
 Initial database size 100GB
+
+# Experiment without intermediate updates
+
 ## Test DB and backup creation log
 ```
 #!/bin/bash
@@ -78,4 +81,83 @@ Tar size 500MB
 Tar size 1GB
 ![1GB](resources/net-1000000000.png)
 Tar size 5GB
-![5GB](resources/net-5000000000.png)
+![5GB](resources/net-5000000000.png)
+
+# Experiment intermediate updates
+## Test DB and backup creation log
+```
+#!/bin/bash
+
+get_time () {
+    echo "$(date +%s)"
+}
+
+PGUSER=postgres
+SCALE=6690
+
+for size in 100000000 500000000 1000000000 5000000000
+do
+cat > /var/lib/postgresql/.walg.json << EOF
+{
+    "WALG_S3_PREFIX": "s3://walg/",
+    "AWS_ACCESS_KEY_ID": "yourkey",
+    "AWS_SECRET_ACCESS_KEY": "yourkey,
+    "AWS_ENDPOINT": "https://storage.yandexcloud.net",
+    "WALG_COMPRESSION_METHOD": "lz4",
+    "WALG_DELTA_MAX_STEPS": "5",
+    "WALG_TAR_SIZE_THRESHOLD": "$size",
+    "PGDATA": "/var/lib/postgresql/12/main",
+    "PGHOST": "/var/run/postgresql/.s.PGSQL.5432",
+    "AWS_REGION": "yourregion",
+    "PGUSER": "postgres",
+    "PGPASSWORD": "postgres"
+}
+EOF
+    chown postgres: /var/lib/postgresql/.walg.json
+    start_time=$(get_time)
+    log_name=log-start-${start_time}-scale-$SCALE-tar-$size-all
+    ./main/pg/wal-g --config=/var/lib/postgresql/.walg.json delete everything FORCE --confirm
+    echo "Restart postgres       $(get_time)" >> $log_name.txt 2>&1
+    service postgresql restart
+    echo "Generate tables start  $(get_time)" >> $log_name.txt 2>&1
+    pgbench -U $PGUSER -i -s $SCALE -n
+    echo "Generate tables finish $(get_time)" >> $log_name.txt 2>&1
+    sleep 600
+    echo "Plain push start       $(get_time)" >> $log_name.txt 2>&1
+    ./main/pg/wal-g --config=/var/lib/postgresql/.walg.json backup-push /var/lib/postgresql/12/main --full
+    echo "Plain push finish      $(get_time)" >> $log_name.txt 2>&1
+    sleep 600
+    for transactions in 10 20 50 100
+    do
+        pgbench -U $PGUSER -t $transactions
+        echo "Running $transactions transactions" >> $log_name.txt 2>&1
+        echo "Copy push start        $(get_time)" >> $log_name.txt 2>&1
+        ./main/pg/wal-g --config=/var/lib/postgresql/.walg.json backup-push /var/lib/postgresql/12/main --full --copy-composer
+        echo "Copy push finish       $(get_time)" >> $log_name.txt 2>&1
+        sleep 600
+    done
+done
+chmod 777 $log_name.txt
+```
+
+**CPU usage**
+
+Tar size 100MB
+![100MB](resources/cpu-100000000-u.png)
+Tar size 500MB
+![500MB](resources/cpu-500000000-u.png)
+Tar size 1GB
+![1GB](resources/cpu-1000000000-u.png)
+Tar size 5GB
+![5GB](resources/cpu-5000000000-u.png)
+
+**Network usage**
+
+Tar size 100MB
+![100MB](resources/net-100000000-u.png)
+Tar size 500MB
+![500MB](resources/net-500000000-u.png)
+Tar size 1GB
+![1GB](resources/net-1000000000-u.png)
+Tar size 5GB
+![5GB](resources/net-5000000000-u.png)