How Discord supercharges network disks for extreme low latency

• dm-cache

  2 162 0.0 C

  Generic block-level cache utility based on Linux device mapper framework

There's a bunch of pretty simple, old products for using SSD's to provided caching for higher latency drives that are all about ~a decade old. Some of them even use Linux's device manager or the block device subsystem explicitly...

https://github.com/mingzhao/dm-cache

• flashcache

  4 1,588 0.0 C

  Discontinued A general purpose, write-back block cache for Linux.

  

• InfluxDB

  www.influxdata.com featured

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• EnhanceIO

  3 419 0.0 C

  Discontinued EnhanceIO Open Source for Linux

  

• Oragono

  20 2,157 8.3 Go

  A modern IRC server (daemon/ircd) written in Go.

  

• diskplorer

  2 210 0.0 Python
  

Some more data on Google PD: https://raw.githubusercontent.com/scylladb/diskplorer/master...

Very odd - notice how the latency is high when the read IOPS are low. When the read IOPS climb, 95th percentile latency drops.

Looks like there is a constant rate of high latency requests, and when the read IOPS climb, that constant rate moves to a higher quantile. I'd inspect the raw results but they're quite big: https://github.com/scylladb/diskplorer/blob/master/latency-m...

Background: https://github.com/scylladb/diskplorer/

• SaaSHub

  www.saashub.com featured

  SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

  

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