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mdbx: add MDBX_opt_merge_threshold_16dot16_percent option.

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Change-Id: I416f85096e4b6fd21f2db622f07f31103cb9074a
This commit is contained in:
Leonid Yuriev
2021-05-06 02:05:33 +03:00
parent 009e3d6c0f
commit 1275bdb623
3 changed files with 43 additions and 11 deletions
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6
src/internals.h
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@@ -1137,7 +1137,10 @@ struct MDBX_env {
unsigned me_leaf_nodemax; /* max size of a leaf-node */
uint8_t me_psize2log; /* log2 of DB page size */
int8_t me_stuck_meta; /* recovery-only: target meta page or less that zero */
unsigned me_os_psize; /* OS page size, from mdbx_syspagesize() */
uint16_t me_merge_threshold,
me_merge_threshold_gc; /* pages emptier than this are candidates for
merging */
unsigned me_os_psize; /* OS page size, from mdbx_syspagesize() */
unsigned me_maxreaders; /* size of the reader table */
MDBX_dbi me_maxdbs; /* size of the DB table */
uint32_t me_pid; /* process ID of this env */
@@ -1164,6 +1167,7 @@ struct MDBX_env {
uint8_t spill_max_denominator;
uint8_t spill_min_denominator;
uint8_t spill_parent4child_denominator;
unsigned merge_threshold_16dot16_percent;
union {
unsigned all;
/* tracks options with non-auto values but tuned by user */