Files
bitcoin/src/node
Ava Chow c7a3ea2483 Merge bitcoin/bitcoin#34692: Bump dbcache to 1 GiB
4ae9a10ada doc: add release notes for dbcache bump (Andrew Toth)
c510d126ef doc: update dbcache default in reduce-memory.md (Andrew Toth)
027cac8527 qt: show GetDefaultDBCache() in settings (Andrew Toth)
5b34f25184 dbcache: bump default from 450MB -> 1024MB if enough memory (Andrew Toth)

Pull request description:

  Alternative to #34641

  This increases the default `dbcache` value from `450MiB` to `1024MiB` if:
  - `dbcache` is unset
  - The system is 64 bit
  - At least 4GiB of RAM is detected

  Otherwise fallback to previous `450MiB` default.

  This should be simple enough to get into v31. The bump to 1GiB shows significant performance increases in #34641. It also alleviates concerns of too high default for steady state, and of lowering the current dbcache for systems with less RAM.

  This change only changes bitcoind behavior, while kernel still defaults to 450 MiB.

ACKs for top commit:
  ajtowns:
    ACK 4ae9a10ada
  kevkevinpal:
    reACK [4ae9a10](4ae9a10ada)
  svanstaa:
    ACK [4ae9a10](4ae9a10ada)
  achow101:
    ACK 4ae9a10ada
  sipa:
    ACK 4ae9a10ada

Tree-SHA512: ee3acf1fb08523ac80e37ec8f0caca226ffde6667f3a75ae6f4f4f54bc905a883ebcf1bf0e8a8a15c7cfabff96c23225825b3fff4506b9ab9936bf2c0a2c2513
2026-03-06 12:07:41 -08:00
..
2026-02-20 16:49:52 +01:00
2026-02-20 16:49:52 +01:00

src/node/

The src/node/ directory contains code that needs to access node state (state in CChain, CBlockIndex, CCoinsView, CTxMemPool, and similar classes).

Code in src/node/ is meant to be segregated from code in src/wallet/ and src/qt/, to ensure wallet and GUI code changes don't interfere with node operation, to allow wallet and GUI code to run in separate processes, and to perhaps eventually allow wallet and GUI code to be maintained in separate source repositories.

As a rule of thumb, code in one of the src/node/, src/wallet/, or src/qt/ directories should avoid calling code in the other directories directly, and only invoke it indirectly through the more limited src/interfaces/ classes.

This directory is at the moment sparsely populated. Eventually more substantial files like src/validation.cpp and src/txmempool.cpp might be moved there.