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mdbx: подстройка dirty-pages-limit при старте транзакций.

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This commit is contained in:
Леонид Юрьев (Leonid Yuriev)
2024-12-27 09:35:57 +03:00
parent c8c541649c
commit 26f6fd351a
5 changed files with 143 additions and 71 deletions
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33
src/txn.c
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@@ -654,21 +654,6 @@ int txn_renew(MDBX_txn *txn, unsigned flags) {
if (txn->tw.gc.retxl)
MDBX_PNL_SETSIZE(txn->tw.gc.retxl, 0);
env->txn = txn;
if ((txn->flags & MDBX_WRITEMAP) == 0 || MDBX_AVOID_MSYNC) {
rc = dpl_alloc(txn);
if (unlikely(rc != MDBX_SUCCESS))
goto bailout;
txn->tw.dirtyroom = txn->env->options.dp_limit;
txn->tw.dirtylru = MDBX_DEBUG ? UINT32_MAX / 3 - 42 : 0;
} else {
tASSERT(txn, txn->tw.dirtylist == nullptr);
txn->tw.dirtylist = nullptr;
txn->tw.dirtyroom = MAX_PAGENO;
txn->tw.dirtylru = 0;
}
eASSERT(env, txn->tw.writemap_dirty_npages == 0);
eASSERT(env, txn->tw.writemap_spilled_npages == 0);
}
txn->front_txnid = txn->txnid + ((flags & (MDBX_WRITEMAP | MDBX_RDONLY)) == 0);
@@ -834,6 +819,24 @@ int txn_renew(MDBX_txn *txn, unsigned flags) {
#endif /* Windows */
} else {
tASSERT(txn, txn == env->basal_txn);
if (env->options.need_dp_limit_adjust)
env_options_adjust_dp_limit(env);
if ((txn->flags & MDBX_WRITEMAP) == 0 || MDBX_AVOID_MSYNC) {
rc = dpl_alloc(txn);
if (unlikely(rc != MDBX_SUCCESS))
goto bailout;
txn->tw.dirtyroom = txn->env->options.dp_limit;
txn->tw.dirtylru = MDBX_DEBUG ? UINT32_MAX / 3 - 42 : 0;
} else {
tASSERT(txn, txn->tw.dirtylist == nullptr);
txn->tw.dirtylist = nullptr;
txn->tw.dirtyroom = MAX_PAGENO;
txn->tw.dirtylru = 0;
}
eASSERT(env, txn->tw.writemap_dirty_npages == 0);
eASSERT(env, txn->tw.writemap_spilled_npages == 0);
MDBX_cursor *const gc = ptr_disp(txn, sizeof(MDBX_txn));
rc = cursor_init(gc, txn, FREE_DBI);
if (rc != MDBX_SUCCESS)