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Spell out clearly in the README that increasing your cache factor may well reduce your overall RAM footprint #3939

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ara4n opened this issue Sep 24, 2018 · 1 comment
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A-Docs things relating to the documentation Z-Help-Wanted We know exactly how to fix this issue, and would be grateful for any contribution

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@ara4n
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ara4n commented Sep 24, 2018

We have many instances of people who, on seeing Synapse use too much RAM, reduce their cache factor.

This often makes things even worse, as if they are blowing out the cache then requests slow down and stack up and end up using more RAM overall. So the solution is actually to increase the factor (typically to 1.0 or 1.5). This is particularly obvious on underpowered servers like Scaleway ARM VPSs.

See also #3876

@richvdh richvdh changed the title Spell out clearly in the README that increasing your cache factor may will reduce your overall RAM footprint Spell out clearly in the README that increasing your cache factor may well reduce your overall RAM footprint Sep 24, 2018
@neilisfragile neilisfragile added the A-Docs things relating to the documentation label Oct 5, 2018
@richvdh richvdh added the Z-Help-Wanted We know exactly how to fix this issue, and would be grateful for any contribution label Oct 10, 2018
@neilisfragile neilisfragile self-assigned this Oct 18, 2018
@aaronraimist
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Should be fixed by #4276

@richvdh richvdh closed this as completed Jul 4, 2019
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