ipfs/kubo

Disable metrics database layer with IPFS_LOW_MEM

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#2,946 opened on Jul 6, 2016

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Description

Currently, one of the largest consumers of memory is the metrics datastore layers 'hdr histogram'. It consumes between 20 and 30MB of memory. It would be nice if when IPFS_LOW_MEM is set that this layer doesnt get added in, or gets slimmed down in some way.

Contributor guide

Tech stack
go
Domain
backend
Issue type
performance
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Go programmingIPFS architecturemetrics datastore knowledge
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
Investigate how IPFS LOW MEM is used elsewhere in the codebase (search for the environment variable). Locate the initialization of the metrics datastore layer that includes the hdr histogram, likely in the metrics package. Modify the code to conditionally disable or slim down that layer when IPFS LOW MEM is set. Check comments for any prior attempts and clarify with maintainers whether complete removal or reduction is preferred.