MPS issue job004105

TitleTime and space overheads are high
Assigned userDavid Lovemore
DescriptionWe spend a lot of time collecting in clasp. And the heap size grows very large. This happens in clasp, and we suspect to some extend in CET as well.
AnalysisWe promote too many objects to higher generations without collecting it frequently enough.

These extra objects cause extra scanning. This may be partially because we have pinned nursery objects.

A robust and reasonable solution is to collect generation k every 2**k nursery collections.

Then objects are collected after the length of time they have been alive for approximately.
How foundmanual_test
Evidence[1] Ideas about Strategy
[2] Re: Ideas about Strategy
[3] Re: Ideas about Strategy
Created byDavid Lovemore
Created on2018-08-17 10:04:45
Last modified byGareth Rees
Last modified on2018-08-28 11:17:06
History2018-08-17 DL Created