init: auto-size dbcache to available system RAM#279
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kwsantiago wants to merge 2 commits intobitcoinknots:29.x-knotsfrom
Open
init: auto-size dbcache to available system RAM#279kwsantiago wants to merge 2 commits intobitcoinknots:29.x-knotsfrom
kwsantiago wants to merge 2 commits intobitcoinknots:29.x-knotsfrom
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How does this compare to bitcoin#34641 ? |
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@luke-jr Same idea, although this PR is more aggressive. This PR uses |
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Auto-size the default dbcache to half of system RAM (capped at 16 GiB) instead of the hardcoded 450 MiB default. Falls back to 450 MiB on platforms where RAM detection fails.
Also enables
-lowmemby default with a 256 MiB threshold so caches are flushed before the system runs out of memory.Platform support: Linux (
sysinfo), Windows (GlobalMemoryStatusEx), macOS (sysctlbyname).Closes #70