Go - Structured Logging Benchmark
_{by Magazine zum Globus}

A structured JSON logging performance benchmark providing realistic performance metrics for the latest versions of:

• sirupsen/logrus
• uber/zap
• rs/zerolog

Performance is measured by the following main criteria:

• total alloc - Total size of allocated memory.
• num-gc - Total number of GC cycles.
• mallocs - Total number of allocated heap objects.
• total pause - Total duration of GC pauses.
• Average and total time of execution (by operation).

i7-8569U @ 2.80GHz

Getting started

1. Install the benchmark:

go get github.com/globusdigital/logbench

2. Run it:

logbench -w 8 -t 1_000_000 -o_all -l zerolog

• -w <num>: defines the number of concurrently writing goroutines.
• -l <logger>: enables a logger. You can enable multiple loggers by specifying multiple flags: -l zerolog -l zap -l logrus.
• -o <operation>: enables an operation. You can enable multiple operations by specifying multiple flags: -o info -o error -o info_with_3.
• -t <num>: defines the number of logs to be written for each operation.
• -o_all: enables all operations ignoring all specified -o flags
• -memprof <path>: specifies the output file path for the memory profile (disabled when not set)
• -mi <duration>: memory inspection interval

How-to

Adding a new logger to the benchmark

• 1. Define the logger in a sub-package.
• 2. Provide a Setup() benchmark.Setup function in your logger's sub-package.
• 3. Implement all benchmark operations:
  • FnInfo func(msg string)
  • FnInfoFmt func(msg string, data int)
  • FnError func(msg string)
  • FnInfoWithErrorStack func(msg string, err error)
  • FnInfoWith3 func(msg string, fields *benchmark.Fields3)
  • FnInfoWith10 func(msg string, fields *benchmark.Fields10)
  • FnInfoWith10Exist func(msg string)
• 4. Add your setup to setups.
• 5. Run the tests with go test -v -race ./... and make sure everything's working.