optimize-lambda-cost

README

Analyze and optimize AWS Lambda costs

This is a little tool that parses the Lambda Function logs to and suggests changes in memory usage.

The suggestion made by this tool are not 100% accurate since tasks that are IO bound can't be optimized by adding more CPU power.

Installation

go get github.com/dcu/optimize-lambda-cost

Usage

optimize-lambda-cost --profile="aws-profile-with-read-access-to-cloudwatch-logs" --since="20 hours ago" my-lambda-function

And the response would look like:

2020/02/16 15:53:20 Start fetching logs for my-lambda-function starting on 2020-02-16 05:53:20.461067 -0500 -05 m=-35999.993904283
.......................
>> Analyzing stats for memory bucket: 192 (total requests: 31273 )
> Distribution for durations
1th 6.86 ms billed: 100 ms
25th 57.12 ms billed: 100 ms
50th 104.11 ms billed: 200 ms
75th 178.52 ms billed: 200 ms
99th 605.36 ms billed: 700 ms
max 1952.67 ms billed: 2000 ms

> Distribution for used memory
1th  64 MB
25th 74 MB
50th 76 MB
75th 78 MB
99th 85 MB
max 85 MB

> Suggested memory based on your usage
Suggestion for 1th percentile: 192 MB
Suggestion for 25th percentile: 192 MB
Suggestion for 75th percentile: 192 MB
Suggestion for 99th percentile: 384 MB

Please note that 1th percentile means 99% of the requests and 99th percentile means the 1% of the requests.

Documentation

Overview

Copyright © 2020 David Cuadrado

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.