9667dc2f03
3 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Paul Hauner
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4c7bb4984c |
Use the forwards iterator more often (#2376)
## Issue Addressed NA ## Primary Change When investigating memory usage, I noticed that retrieving a block from an early slot (e.g., slot 900) would cause a sharp increase in the memory footprint (from 400mb to 800mb+) which seemed to be ever-lasting. After some investigation, I found that the reverse iteration from the head back to that slot was the likely culprit. To counter this, I've switched the `BeaconChain::block_root_at_slot` to use the forwards iterator, instead of the reverse one. I also noticed that the networking stack is using `BeaconChain::root_at_slot` to check if a peer is relevant (`check_peer_relevance`). Perhaps the steep, seemingly-random-but-consistent increases in memory usage are caused by the use of this function. Using the forwards iterator with the HTTP API alleviated the sharp increases in memory usage. It also made the response much faster (before it felt like to took 1-2s, now it feels instant). ## Additional Changes In the process I also noticed that we have two functions for getting block roots: - `BeaconChain::block_root_at_slot`: returns `None` for a skip slot. - `BeaconChain::root_at_slot`: returns the previous root for a skip slot. I unified these two functions into `block_root_at_slot` and added the `WhenSlotSkipped` enum. Now, the caller must be explicit about the skip-slot behaviour when requesting a root. Additionally, I replaced `vec![]` with `Vec::with_capacity` in `store::chunked_vector::range_query`. I stumbled across this whilst debugging and made this modification to see what effect it would have (not much). It seems like a decent change to keep around, but I'm not concerned either way. Also, `BeaconChain::get_ancestor_block_root` is unused, so I got rid of it 🗑️. ## Additional Info I haven't also done the same for state roots here. Whilst it's possible and a good idea, it's more work since the fwds iterators are presently block-roots-specific. Whilst there's a few places a reverse iteration of state roots could be triggered (e.g., attestation production, HTTP API), they're no where near as common as the `check_peer_relevance` call. As such, I think we should get this PR merged first, then come back for the state root iters. I made an issue here https://github.com/sigp/lighthouse/issues/2377. |
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realbigsean
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2c2c443718 |
404's on API requests for slots that have been skipped or orphaned (#2272)
## Issue Addressed Resolves #2186 ## Proposed Changes 404 for any block-related information on a slot that was skipped or orphaned Affected endpoints: - `/eth/v1/beacon/blocks/{block_id}` - `/eth/v1/beacon/blocks/{block_id}/root` - `/eth/v1/beacon/blocks/{block_id}/attestations` - `/eth/v1/beacon/headers/{block_id}` ## Additional Info Co-authored-by: realbigsean <seananderson33@gmail.com> |
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Paul Hauner
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cdec3cec18
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Implement standard eth2.0 API (#1569)
- Resolves #1550 - Resolves #824 - Resolves #825 - Resolves #1131 - Resolves #1411 - Resolves #1256 - Resolve #1177 - Includes the `ShufflingId` struct initially defined in #1492. That PR is now closed and the changes are included here, with significant bug fixes. - Implement the https://github.com/ethereum/eth2.0-APIs in a new `http_api` crate using `warp`. This replaces the `rest_api` crate. - Add a new `common/eth2` crate which provides a wrapper around `reqwest`, providing the HTTP client that is used by the validator client and for testing. This replaces the `common/remote_beacon_node` crate. - Create a `http_metrics` crate which is a dedicated server for Prometheus metrics (they are no longer served on the same port as the REST API). We now have flags for `--metrics`, `--metrics-address`, etc. - Allow the `subnet_id` to be an optional parameter for `VerifiedUnaggregatedAttestation::verify`. This means it does not need to be provided unnecessarily by the validator client. - Move `fn map_attestation_committee` in `mod beacon_chain::attestation_verification` to a new `fn with_committee_cache` on the `BeaconChain` so the same cache can be used for obtaining validator duties. - Add some other helpers to `BeaconChain` to assist with common API duties (e.g., `block_root_at_slot`, `head_beacon_block_root`). - Change the `NaiveAggregationPool` so it can index attestations by `hash_tree_root(attestation.data)`. This is a requirement of the API. - Add functions to `BeaconChainHarness` to allow it to create slashings and exits. - Allow for `eth1::Eth1NetworkId` to go to/from a `String`. - Add functions to the `OperationPool` to allow getting all objects in the pool. - Add function to `BeaconState` to check if a committee cache is initialized. - Fix bug where `seconds_per_eth1_block` was not transferring over from `YamlConfig` to `ChainSpec`. - Add the `deposit_contract_address` to `YamlConfig` and `ChainSpec`. We needed to be able to return it in an API response. - Change some uses of serde `serialize_with` and `deserialize_with` to a single use of `with` (code quality). - Impl `Display` and `FromStr` for several BLS fields. - Check for clock discrepancy when VC polls BN for sync state (with +/- 1 slot tolerance). This is not intended to be comprehensive, it was just easy to do. - See #1434 for a per-endpoint overview. - Seeking clarity here: https://github.com/ethereum/eth2.0-APIs/issues/75 - [x] Add docs for prom port to close #1256 - [x] Follow up on this #1177 - [x] ~~Follow up with #1424~~ Will fix in future PR. - [x] Follow up with #1411 - [x] ~~Follow up with #1260~~ Will fix in future PR. - [x] Add quotes to all integers. - [x] Remove `rest_types` - [x] Address missing beacon block error. (#1629) - [x] ~~Add tests for lighthouse/peers endpoints~~ Wontfix - [x] ~~Follow up with validator status proposal~~ Tracked in #1434 - [x] Unify graffiti structs - [x] ~~Start server when waiting for genesis?~~ Will fix in future PR. - [x] TODO in http_api tests - [x] Move lighthouse endpoints off /eth/v1 - [x] Update docs to link to standard - ~~Blocked on #1586~~ Co-authored-by: Michael Sproul <michael@sigmaprime.io> |