mariadb

Tree: 6e6d1e8655

inaam 6e6d1e8655 branches/zip rb://133 This patch introduces heuristics based flushing rate of dirty pages to avoid IO bursts at checkpoint. 1) log_capacity / log_generated per second gives us number of seconds in which ALL dirty pages need to be flushed. Based on this rough assumption we can say that n_dirty_pages / (log_capacity / log_generation_rate) = desired_flush_rate 2) We use weighted averages (hard coded to 20 seconds) of log_generation_rate to avoid resonance. 3) From the desired_flush_rate we subtract the number of pages that have been flushed due to LRU flushing. That gives us pages that we should flush as part of flush_list cleanup. And that is the number (capped by maximum io_capacity) that we try to flush from the master thread. Knobs: ====== innodb_adaptive_flushing: boolean, global, dynamic, default TRUE. Since this heuristic is very experimental and has the potential to dramatically change the IO pattern I think it is a good idea to leave a knob to turn it off. Approved by: Heikki		17 years ago
btr	branches/zip: Merge revisions 4994:5148 from branches/5.1:	17 years ago
buf	branches/zip rb://133	17 years ago
data	branches/zip: Add some Doxygen @return comments.	17 years ago
dict	branches/zip: dict_index_find_cols(): Print diagnostic on name mismatch.	17 years ago
dyn	branches/zip: Add @file comments, and convert decorative	17 years ago
eval	branches/zip: Add some Doxygen comments for many structs, typedefs,	17 years ago
fil	branches/zip: Add some Doxygen comments for many structs, typedefs,	17 years ago
fsp	branches/zip: fseg_validate(): Enclose in #ifdef UNIV_DEBUG.	17 years ago
fut	branches/zip: Add @file comments, and convert decorative	17 years ago
ha	branches/zip: ha_delete(): Remove this unused function that was	17 years ago
handler	branches/zip rb://133	17 years ago
ibuf	branches/zip: ibuf_dummy_index_free(): Beautify the comment.	17 years ago
include	branches/zip rb://133	17 years ago
lock	branches/zip: lock_is_on_table(), lock_table_unlock(): Unused, remove.	17 years ago
log	branches/zip rb://126	17 years ago
mach	branches/zip: Add @file comments, and convert decorative	17 years ago
mem	branches/zip: mem_heap_cat(): Unused, remove.	17 years ago
mtr	branches/zip: Minor changes for Hot Backup to build correctly. (The	17 years ago
mysql-test	branches/zip: Do not crash on SET GLOBAL innodb_file_format=DEFAULT	17 years ago
os	branches/zip	17 years ago
page	branches/zip: page_set_max_trx_id(): Make the code compile	17 years ago
pars	branches/zip: Add some Doxygen comments for many structs, typedefs,	17 years ago
que	branches/zip: que_graph_try_free(): Unused, remove.	17 years ago
read	branches/zip: Add @file comments, and convert decorative	17 years ago
rem	branches/zip: Add some Doxygen comments for many structs, typedefs,	17 years ago
row	branches/zip: row_build_row_ref_from_row(): Unused, remove.	17 years ago
scripts	branches/zip: scripts/install_innodb_plugins_win.sql: New script,	17 years ago
srv	branches/zip rb://133	17 years ago
sync	branches/zip: Add some Doxygen comments for many structs, typedefs,	17 years ago
thr	branches/zip: Add some Doxygen comments for many structs, typedefs,	17 years ago
trx	branches/zip: Add functions for checking the format of tablespaces	17 years ago
usr	branches/zip: Add @file comments, and convert decorative	17 years ago
ut	branches/zip:	17 years ago
win-plugin	branches/zip: remove statically linked libraries from mysql	17 years ago
CMakeLists.txt	branches/zip: add IB_HAVE_PAUSE_INSTRUCTION to CMake.	17 years ago
COPYING	branches/zip:	17 years ago
COPYING.Google	branches/zip:	17 years ago
COPYING.Percona	branches/zip: add COPYING files for Percona and Sun Micro.	17 years ago
COPYING.Sun_Microsystems	branches/zip: add COPYING files for Percona and Sun Micro.	17 years ago
ChangeLog	branches/zip:	17 years ago
Doxyfile	branches/zip: buf0buf.h, Doxyfile: Fix the Doxygen translation.	17 years ago
Makefile.am	branches/zip: Merge 2423:2437 from branches/5.1:	18 years ago
compile-innodb	branches/zip:	17 years ago
compile-innodb-debug	branches/zip:	17 years ago
ha_innodb.def	branches/zip: ChangeLog, ha_innodb.def: Set svn:eol-style native	17 years ago
plug.in	branches/zip:	17 years ago
revert_gen.sh	branches/zip: Merge revisions 265:459 from trunk.	20 years ago
setup.sh	branches/zip:	17 years ago