Add urlgen.

tests/siege/.gitignore

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+urls.txt

tests/siege/README.md

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+Siege
+=====
+
+Siege is an HTTP benchmarking tool and can be used against InfluxDB easily.
+If you're on Mac you can install `siege` using `brew`. If you're on Linux
+you can install using your package manager.
+
+
+## Running
+
+To run siege, first start one or more InfluxDB nodes. At least one of those
+nodes should run on the default port of `8086`.
+
+Next, choose a URL file to run. The URL files are named based on their series
+cardinality. For example, `series.10.txt` has 10 unique series.
+
+Now you can execute siege. There are several arguments available but only 
+a few that we're concerned with:
+
+```
+-c NUM   the number of concurrent connections.
+-d NUM   delay between each request, in seconds.
+-b       benchmark mode. runs with a delay of 0.
+-t DUR   duration of the benchmark. value should end in 's', 'm', or 'h'.
+-f FILE  the path to the URL file.
+```
+
+These can be combined to simulate different load. For example, this command
+will execute writes against 10 unique series using 100 concurrent connections:
+
+```sh
+$ siege -c 100 -f series.10.txt
+```

tests/siege/urlgen

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+#!/bin/sh -e
+
+# Calculate start time as unix timestamp.
+TIME=`date -j -f "%b %d %T %Z %Y" "Jan 01 00:00:00 EDT 2000" "+%s"`
+
+# Set defaults.
+INTERVAL=10
+NUMSERIES=1
+NUMPOINTS=100
+
+# Parse arguments
+while getopts "s:p:i:h" opt; do
+	case $opt in
+	i)
+		INTERVAL=$OPTARG
+		;;
+	s)
+		NUMSERIES=$OPTARG
+		;;
+	p)
+		NUMPOINTS=$OPTARG
+		;;
+	h)
+		echo "urlgen is a utility for generating URL files for siege."
+		echo ""
+		echo "Usage:"
+		echo "	urlgen.sh [OPTIONS]"
+		echo ""
+		echo "The following arguments can be specified:"
+		echo ""
+		echo "	-i seconds"
+	    echo "	    Interval between generated points per series."
+		echo ""
+		echo "	-s num"
+	    echo "	    Number of unique series to generate."
+		echo ""
+		echo "	-p num"
+	    echo "	    Number of points per series to generate."
+		echo ""
+		exit 1
+		;;
+	esac
+done
+
+# Generate a new value every interval per series.
+for i in `seq 1 $NUMPOINTS`;
+do
+	# Move forward the current time.
+	let TIME=TIME+INTERVAL
+	TIMESTAMP=`date -j -f "%s" $TIME +"%Y-%m-%dT%H:%M:%SZ"`
+
+	# Generate a URL for each series.
+	for series in `seq 1 $NUMSERIES`;
+	do
+		echo 'http://localhost:8086/write POST {"database" : "db", "retentionPolicy" : "raw", "points": [{"name": "cpu", "tags": {"host": "server'$series'"}, "timestamp": "'$TIMESTAMP'","values": {"value": 100}}]}'
+	done
+done
+
+