f3a56002ca
The Vertex type unifies branches, extensions and leaves into a single memory area where the larges member is the branch (128 bytes + overhead) - the payloads we have are all smaller than 128 thus wrapping them in an extra layer of `ref` is wasteful from a memory usage perspective. Further, the ref:s must be visited during the M&S phase of garbage collection - since we keep millions of these, many of them short-lived, this takes up significant CPU time. ``` Function CPU Time: Total CPU Time: Self Module Function (Full) Source File Start Address system::markStackAndRegisters 10.0% 4.922s nimbus system::markStackAndRegisters(var<system::GcHeap>).constprop.0 gc.nim 0x701230` ``` |
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|---|---|---|
| .. | ||
| backend | ||
| base | ||
| README.md | ||
| TODO.md | ||
| base.nim | ||
| base_iterators.nim | ||
| base_iterators_persistent.nim | ||
| core_apps.nim | ||
| memory_only.nim | ||
| persistent.nim | ||
README.md
Core database
Layout of CoreDb descriptor objects
Objects dependence:
CoreDbRef -- Base descriptor
| | |
| | +--- CoreDbCtxRef -- Context descriptor
| | | | | |
| | | | | +--- CoreDbKvtRef -- Key-value table
| | | | |
| | | | +----- CoreDbMptRef -- Generic MPT
| | | |
| | | +------- CoreDbAccRef -- Accounts database
| | |
| | +--------- CoreDbTxRef -- Transaction handle
| |
| +----- CoreDbCtxRef
| : : : :
|
+------- CoreDbCtxRef
: : : :