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DB-793 add debug return prints for scan_time, read_time, key_read_time, and index_only_read_time to help debug query plan issues

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This commit is contained in:
Rich Prohaska 2015-01-29 09:00:42 -05:00
parent bc605380b1
commit 67ad13e739
1 changed files with 16 additions and 4 deletions
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20
storage/tokudb/ha_tokudb.cc
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@ -7154,12 +7154,15 @@ To rename the table, make sure no transactions touch the table.", from, to);
double ha_tokudb::scan_time() {
TOKUDB_HANDLER_DBUG_ENTER("");
double ret_val = (double)stats.records / 3;
if (tokudb_debug & TOKUDB_DEBUG_RETURN) {
TOKUDB_HANDLER_TRACE("return %" PRIu64 " %f", (uint64_t) stats.records, ret_val);
}
DBUG_RETURN(ret_val);
}
double ha_tokudb::keyread_time(uint index, uint ranges, ha_rows rows)
{
TOKUDB_HANDLER_DBUG_ENTER("");
TOKUDB_HANDLER_DBUG_ENTER("%u %u %" PRIu64, index, ranges, (uint64_t) rows);
double ret_val;
if (index == primary_key || key_is_clustering(&table->key_info[index])) {
ret_val = read_time(index, ranges, rows);
@ -7177,6 +7180,9 @@ double ha_tokudb::keyread_time(uint index, uint ranges, ha_rows rows)
(table->key_info[index].key_length +
ref_length) + 1);
ret_val = (rows + keys_per_block - 1)/ keys_per_block;
if (tokudb_debug & TOKUDB_DEBUG_RETURN) {
TOKUDB_HANDLER_TRACE("return %f", ret_val);
}
DBUG_RETURN(ret_val);
}
@ -7197,7 +7203,7 @@ double ha_tokudb::read_time(
ha_rows rows
)
{
TOKUDB_HANDLER_DBUG_ENTER("");
TOKUDB_HANDLER_DBUG_ENTER("%u %u %" PRIu64, index, ranges, (uint64_t) rows);
double total_scan;
double ret_val;
bool is_primary = (index == primary_key);
@ -7239,12 +7245,18 @@ double ha_tokudb::read_time(
ret_val = is_clustering ? ret_val + 0.00001 : ret_val;
cleanup:
if (tokudb_debug & TOKUDB_DEBUG_RETURN) {
TOKUDB_HANDLER_TRACE("return %f", ret_val);
}
DBUG_RETURN(ret_val);
}
double ha_tokudb::index_only_read_time(uint keynr, double records) {
TOKUDB_HANDLER_DBUG_ENTER("");
TOKUDB_HANDLER_DBUG_ENTER("%u %f", keynr, records);
double ret_val = keyread_time(keynr, 1, (ha_rows)records);
if (tokudb_debug & TOKUDB_DEBUG_RETURN) {
TOKUDB_HANDLER_TRACE("return %f", ret_val);
}
DBUG_RETURN(ret_val);
}
@ -7319,7 +7331,7 @@ ha_rows ha_tokudb::records_in_range(uint keynr, key_range* start_key, key_range*
cleanup:
if (tokudb_debug & TOKUDB_DEBUG_RETURN) {
TOKUDB_HANDLER_TRACE("%" PRIu64 " %" PRIu64, (uint64_t) ret_val, rows);
TOKUDB_HANDLER_TRACE("return %" PRIu64 " %" PRIu64, (uint64_t) ret_val, rows);
}
DBUG_RETURN(ret_val);
}