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src/xrpld/overlay/detail/Tuning.h
1#pragma once
2
3#include <xrpl/shamap/SHAMapInnerNode.h>
4
5#include <cstddef>
6#include <cstdint>
7
8namespace xrpl::tuning {
9
14static constexpr std::uint32_t kConvergedLedgerLimit = 24;
15
20static constexpr std::uint32_t kDivergedLedgerLimit = 128;
21
25static constexpr auto kSoftMaxReplyNodes = 8192;
26
30static constexpr auto kHardMaxReplyNodes = 12288;
31
35static constexpr auto kSendqIntervals = 4;
36
40static constexpr auto kDropSendQueue = 192;
41
45static constexpr auto kTargetSendQueue = 128;
46
50static constexpr auto kSendQueueLogFreq = 64;
51
55static constexpr auto kCheckIdlePeers = 4;
56
60static constexpr auto kMaxQueryDepth = 3;
61
65constexpr std::size_t kReadBufferBytes = 16384;
66
91
99static constexpr auto kFreeObjectsPerRequest = 16;
100
105static constexpr auto kCostPerLookupHit = 1;
106
118static constexpr auto kCostPerLookupMiss = 8;
119
134static constexpr auto kCostBandSmall = 0;
135static constexpr auto kCostBandMedium = 100;
136static constexpr auto kCostBandLarge = 1000;
137
147static constexpr auto kLegitHashesPerType = 4;
148
165static constexpr auto kBandSmallMax = kLegitHashesPerType * SHAMapInnerNode::kBranchFactor;
166static constexpr auto kBandMediumMax = kBandSmallMax * SHAMapInnerNode::kBranchFactor;
167
168} // namespace xrpl::tuning
xrpl::SHAMapInnerNode::kBranchFactor
static constexpr unsigned int kBranchFactor
Each inner node has 16 children (the 'radix tree' part of the map).
Definition SHAMapInnerNode.h:24
xrpl::tuning::kSoftMaxReplyNodes
static constexpr auto kSoftMaxReplyNodes
The soft cap on the number of ledger entries in a single reply.
Definition src/xrpld/overlay/detail/Tuning.h:25
xrpl::tuning::kBandMediumMax
static constexpr auto kBandMediumMax
Definition src/xrpld/overlay/detail/Tuning.h:166
xrpl::tuning::kTargetSendQueue
static constexpr auto kTargetSendQueue
How many messages we consider reasonable sustained on a send queue.
Definition src/xrpld/overlay/detail/Tuning.h:45
xrpl::tuning::kCostPerLookupHit
static constexpr auto kCostPerLookupHit
Cost of one cache-hit lookup.
Definition src/xrpld/overlay/detail/Tuning.h:105
xrpl::tuning::kCostBandLarge
static constexpr auto kCostBandLarge
Definition src/xrpld/overlay/detail/Tuning.h:136
xrpl::tuning::kFreeObjectsPerRequest
static constexpr auto kFreeObjectsPerRequest
TMGetObjectByHash differential pricing.
Definition src/xrpld/overlay/detail/Tuning.h:99
xrpl::tuning::kHardMaxReplyNodes
static constexpr auto kHardMaxReplyNodes
The hard cap on the number of ledger entries in a single reply.
Definition src/xrpld/overlay/detail/Tuning.h:30
xrpl::tuning::kConvergedLedgerLimit
static constexpr std::uint32_t kConvergedLedgerLimit
How many ledgers off a server can be and we will still consider it converged.
Definition src/xrpld/overlay/detail/Tuning.h:14
xrpl::tuning::kDropSendQueue
static constexpr auto kDropSendQueue
How many messages on a send queue before we refuse queries.
Definition src/xrpld/overlay/detail/Tuning.h:40
xrpl::tuning::kLegitHashesPerType
static constexpr auto kLegitHashesPerType
How many hashes per type an honest peer asks for at a time.
Definition src/xrpld/overlay/detail/Tuning.h:147
xrpl::tuning::kMaxQueryDepth
static constexpr auto kMaxQueryDepth
The maximum number of levels to search.
Definition src/xrpld/overlay/detail/Tuning.h:60
xrpl::tuning::kSendqIntervals
static constexpr auto kSendqIntervals
How many timer intervals a sendq has to stay large before we disconnect.
Definition src/xrpld/overlay/detail/Tuning.h:35
xrpl::tuning::kBandSmallMax
static constexpr auto kBandSmallMax
Cutoffs that decide which size band a request falls into.
Definition src/xrpld/overlay/detail/Tuning.h:165
xrpl::tuning::kReadBufferBytes
constexpr std::size_t kReadBufferBytes
Size of buffer used to read from the socket.
Definition src/xrpld/overlay/detail/Tuning.h:65
xrpl::tuning::kCostBandMedium
static constexpr auto kCostBandMedium
Definition src/xrpld/overlay/detail/Tuning.h:135
xrpl::tuning::kCostPerLookupMiss
static constexpr auto kCostPerLookupMiss
Cost of one node-store miss, in units of kCostPerLookupHit.
Definition src/xrpld/overlay/detail/Tuning.h:118
xrpl::tuning::kDivergedLedgerLimit
static constexpr std::uint32_t kDivergedLedgerLimit
How many ledgers off a server has to be before we consider it diverged.
Definition src/xrpld/overlay/detail/Tuning.h:20
xrpl::tuning::kCostBandSmall
static constexpr auto kCostBandSmall
Size-band surcharges.
Definition src/xrpld/overlay/detail/Tuning.h:134
xrpl::tuning::kSendQueueLogFreq
static constexpr auto kSendQueueLogFreq
How often to log send queue size.
Definition src/xrpld/overlay/detail/Tuning.h:50
xrpl::tuning::kCheckIdlePeers
static constexpr auto kCheckIdlePeers
How often we check for idle peers (seconds).
Definition src/xrpld/overlay/detail/Tuning.h:55
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