These benchmarks measure thoughput, latency, and CPU cycles for Memcache, Redis, Valkey, Dragonfly, Garnet, and Pogocache.
- Persistance is turned off for all caches, no disk operations.
- All connections are local, UNIX named pipes.
- The hardware is an AWS c8g.8xlarge (32 core non-NUMA ARM64).
- The benchmarking tool is memtier_benchmark.
- Includes pipelining for 1, 10, 25, and 50.
- Each benchmark has 31 runs. About 15K total runs.
- The median of the 31 is used for graphing.
- Latency is measured in 50th, 90th, 99th, 99.9th, 99.99th percentiles.
- Latency also includes MAX, the absolute slowest single request.
- CPU cycles are measured using the
perfLinux utility.
The "Threads" at the bottom of each graph represents the number of I/O Threads that the caching server software is configured to use for that specific benchmark. All caching software benchmarked has some type of multithreaded networking support through the following startup flags.
- Memcache:
-t - Redis:
--io-threads - Valkey:
--io-threads - Dragonfly:
--proactor_threads - Garnet:
--miniothreads/maxiothreads --minthreads/maxthreads - Pogocache:
-t
For each benchmark, a fresh instance of the cache server software is started,
which is dedicated to 16 cores using taskset -c 0-15.
The memtier_benchmark tool uses the other 16 cores taskset -c 16-31.
Of those 16 cores, there are 256 clients spread evenly between 16 threads.
Those clients perform 100K SET and 100K GET operations, each.
There's a warmup stage that occurs at the start of each run, just after the cache software is started. It performs a dry run of all SET operations. This warmup is not a part of the measurements.
The ./bench-all.sh scripts starts running the benchmarks and produces results
that are placed in the results directory.
Expect it to take about two weeks from start to finish to complete all runs.
| CACHE | VERSION |
|---|---|
| memcached | 1.6.38 |
| Redis | v=8.2.1 sha=cd0b1293:0 malloc=jemalloc-5.3.0 bits=64 build=4223e47892f6315a |
| Valkey | v=8.1.1 sha=fcd8bc3e:0 malloc=jemalloc-5.3.0 bits=64 build=538068b40a1d8f11 |
| dragonfly | v1.30.3-a8c40e34757396a034e98b2c1c437dd568b50c8a |
| Garnet | 1.0.65+381bb797fb158d163cd74996f7b1cfff713069fe |
| Pogocache | 1.2.0 |
Below are five important benchmarks presented in linear scale. There are over 150 graphs in total. To see them all choose one of the following options.
NOTE: Garnet was removed for thread 1 due to very high latency
See results with Garnet
