Invoke TxGraph::DoWork() at appropriate times

src/txmempool.cpp

@@ -211,6 +211,7 @@ void CTxMemPool::Apply(ChangeSet* changeset)
 
         addNewTransaction(it);
     }
+    m_txgraph->DoWork(POST_CHANGE_WORK);
 }
 
 void CTxMemPool::addNewTransaction(CTxMemPool::txiter newit)
@@ -357,6 +358,7 @@ void CTxMemPool::removeForReorg(CChain& chain, std::function<bool(txiter)> check
     for (indexed_transaction_set::const_iterator it = mapTx.begin(); it != mapTx.end(); it++) {
         assert(TestLockPointValidity(chain, it->GetLockPoints()));
     }
+    m_txgraph->DoWork(POST_CHANGE_WORK);
 }
 
 void CTxMemPool::removeConflicts(const CTransaction &tx)
@@ -401,6 +403,7 @@ void CTxMemPool::removeForBlock(const std::vector<CTransactionRef>& vtx, unsigne
     }
     lastRollingFeeUpdate = GetTime();
     blockSinceLastRollingFeeBump = true;
+    m_txgraph->DoWork(POST_CHANGE_WORK);
 }
 
 void CTxMemPool::check(const CCoinsViewCache& active_coins_tip, int64_t spendheight) const

src/txmempool.h

@@ -55,6 +55,10 @@ static const uint32_t MEMPOOL_HEIGHT = 0x7FFFFFFF;
  * iterations. */
 static constexpr uint64_t ACCEPTABLE_ITERS = 1'700;
 
+/** How much work we ask TxGraph to do after a mempool change occurs (either
+ * due to a changeset being applied, a new block being found, or a reorg). */
+static constexpr uint64_t POST_CHANGE_WORK = 5 * ACCEPTABLE_ITERS;
+
 /**
  * Test whether the LockPoints height and time are still valid on the current chain
  */