database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-29 05:21:33 +03:00
Code Activity

Added configuration parameters for batch size, batch byte size

Browse Source 
and max scan batch size
Removed some debug printouts
This commit is contained in:
unknown
2004-08-18 11:55:37 +02:00
parent fc669d12e0
commit a443bee804
7 changed files with 110 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
ndb/include/kernel/ndb_limits.h
View File

@ -64,24 +64,30 @@
#define MIN_ATTRBUF ((MAX_ATTRIBUTES_IN_TABLE/24) + 1)
/*
* Number of Records to fetch per SCAN_NEXTREQ in a scan in LQH. The
* Max Number of Records to fetch per SCAN_NEXTREQ in a scan in LQH. The
* API can order a multiple of this number of records at a time since
* fragments can be scanned in parallel.
*/
#define MAX_PARALLEL_OP_PER_SCAN 992
/*
* The default batch size. Configurable parameter.
*/
#define DEF_BATCH_SIZE 64
/*
* When calculating the number of records sent from LQH in each batch
* one uses SCAN_BATCH_SIZE divided by the expected size of signals
* per row. This gives the batch size used for the scan. The NDB API
* will receive one batch from each node at a time so there has to be
* some care taken also so that the NDB API is not overloaded with
* signals.
* This parameter is configurable, this is the default value.
*/
#define SCAN_BATCH_SIZE 32768
/*
* To protect the NDB API from overload we also define a maximum total
* batch size from all nodes. This parameter should most likely be
* configurable, or dependent on sendBufferSize.
* This parameter is configurable, this is the default value.
*/
#define MAX_SCAN_BATCH_SIZE 262144
/*