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Hi, Solaris 10 64bit x86, MySQL 5.1.41 Despite having myisam_use_mmap = 1 in my.cnf there are still lots of pread(), read() syscalls to myisam data...
Robert Milkowski
01-12-2010 05:59 AM
Michael Widenius Go to last post
3 160
To : internals (AT) lists (DOT) mysql.com Currently i'm carrying-out analysis on following basic queries, so that i can execute them in...
Mahesh Dilhan
01-11-2010 04:01 AM
Venu Kalyan Go to last post
3 129
Dear MySQL experts: Thank you so much for your reply to my previous Qs, they are very helpful! Could someone please help me understand function...
Yan Yu
12-24-2009 06:18 AM
Michael Widenius Go to last post
1 195
Dear Mysql experts, I just started working on MySql source code at Facebook. I hope you could help shed some light on one question I have: I am...
Yan Yu
12-23-2009 10:12 AM
Alexander Barkov Go to last post
5 199
I get this unknown option --skip-bdb error, does anybody have any idea about this ? Thanks, Hiromichi hwatari@hwatari-desktop2:/usr/local/mysql$...
Hiromichi Watari
12-17-2009 05:58 PM
Hiromichi Watari Go to last post
5 194
according to: http://forge.mysql.com/wiki/MySQL_Internals_ClientServer_Protocol#The_Packet_Header the first 3 bytes of the response from server to...
Eric DeFriez
12-14-2009 06:12 PM
Eric DeFriez Go to last post
2 166
Hello, In current mysql-5.1, storage/innodb_plugin/row/row0sel.c, line 434 (in function row_sel_fetch_columns()), one can find the following...
Sergey Petrunya
12-09-2009 02:15 AM
Sunny Bains Go to last post
1 157
Is there a reason to compute some functions of constant values multiple times? While debugging, I found unix_timestamp(constant) gets evaluated 3...
Olivier Chédru
12-08-2009 01:04 PM
Rick James Go to last post
6 184
Hello all, I want to maintain some statistics while a statement is executing (number of rows inserted, updated, deleted, or read). If...
Zardosht Kasheff
12-07-2009 05:01 PM
Rick James Go to last post
3 207
Hello, I'm pleased to offer the following fix for BUG#41996: <patch> === modified file 'sql/sql_select.cc' --- sql/sql_select.cc 2009-11-25...
sca@askmonty.org
12-07-2009 03:12 PM
Lenz Grimmer Go to last post
1 114
Hi, ¬*¬*¬* ¬*¬*¬* I tried to build mysql on windows. ¬*¬*¬*¬*I followed the documentations at "5.1 Building MySQL from Source Using CMake and Visual...
yishion
12-02-2009 11:48 PM
yishion Go to last post
6 145
We are developing a non-transactional storage engine. The default behavior of binlog is not suitable for this engine because it will cache all events...
Yuan Wang
12-02-2009 09:43 AM
Mats Kindahl Go to last post
1 115
hi, all. I want to modify MySQL source for taking advantage of the potential performance of my quad core computer. what MySQL has done to exploit...
Hui Lin
11-30-2009 11:40 AM
Timour Katchaounov Go to last post
6 164
We are developed a storage engine using row based replication. During the test we found that primary key values will not be included in the binlog...
Yuan Wang
11-26-2009 04:15 AM
Mats Kindahl Go to last post
18 297
Hi, Is sub-query materialization supposed to work in the context of BLOB columns? Given the following query (ref. Bug#48213) where column e is BLOB...
ōystein GrÝvlen
11-25-2009 09:16 AM
ōystein GrÝvlen Go to last post
6 181
Hi, I'm working on BUG#45221. In this bug, ICP is used when looking up records in a MyISAM table. Consider the following query: CREATE TABLE t1...
JÝrgen LÝland
11-20-2009 08:59 AM
JÝrgen LÝland Go to last post
5 138
We are developed a storage engine using row based replication. This engine is non-transactional and will use row level locking. The row locks will...
Yuan Wang
11-20-2009 05:38 AM
Mats Kindahl Go to last post
4 136
I'm not sure that this ever showed up on the list, so my apologies if you're seeing this for the second time. I figured someone would at least have...
Phillip Moore
11-19-2009 12:05 PM
Michael Widenius Go to last post
3 176
Hi guys, I have just been coding a boolean full-text plugin and the one thing I still don't get is the quot element of the...
Andrew Hutchings
11-13-2009 04:53 AM
Andrew Hutchings Go to last post
2 151
Hello, I have created a WL#5161 with a task dedicated to supporting a unified build system based on CMake (http://www.cmake.org/). CMake has been in...
Vladislav Vaintroub
11-13-2009 03:53 AM
Mats Kindahl Go to last post
5 156
Hi, I'm getting the following error while trying to build the MySQL server 5.1.38 source on Kubuntu...
Amila Liyanaarachchi
11-13-2009 03:19 AM
Mats Kindahl Go to last post
7 142
Hi everybody, I'm starting to look inside MySQL Internals because I need to write a little patch to log users access into db. I think that this could...
Paolo Lunazzi
11-12-2009 05:31 PM
Paolo Lunazzi Go to last post
8 188
Hi, I would like people's opinion on how to deal with table pull-out for queries like SELECT * FROM t1 where (1) in (SELECT * FROM t2 STRAIGHT_JOIN...
ōystein GrÝvlen
11-11-2009 10:22 AM
ōystein GrÝvlen Go to last post
2 162
Hello all, I realize this is a bit of a general question, but I am not sure where to start looking. How does one determine if a storage engine...
Zardosht Kasheff
11-11-2009 10:11 AM
Paul McCullagh Go to last post
15 206
I found a problem introduced in MySQL 5.1.39 by the patch for Bug#45261. The bzr revision is this: revid:davi.arnaut (AT) sun (DOT)...
Kristian Nielsen
11-02-2009 08:51 AM
Kristian Nielsen Go to last post
2 151
I want to return an error in the patch I submitted for http://bugs.mysql.com/bug.php?id=48124 This document appears to be out of...
MARK CALLAGHAN
10-31-2009 08:42 AM
MARK CALLAGHAN Go to last post
6 151
Hi! OK, so there's a bit of a disagreement as to what "rnd" stands for in the handler interface. For instance handler::rnd_pos(),...
Jay Pipes
10-28-2009 08:37 PM
Jimy Green Go to last post
4 192
Hi all Im wondering if there is such a thing like gprofiler or sunprofiler to measure the processing cost in cpu cycles or milliseconds for...
Patrick Lau
10-28-2009 03:47 PM
Peter Gulutzan Go to last post
2 154
Hi Why don't we start writing unit tests for MySQL code? I have been experimenting with the google unit testing framework lately. I started out...
Tor Didriksen
10-22-2009 03:37 AM
Tor Didriksen Go to last post
9 161
Hello, We're pleased to offer the following contribution under the terms of SCA: At...
sca@askmonty.org
10-21-2009 11:29 AM
Masood Mortazavi Go to last post
5 144
Hello, We're pleased to offer the following contribution under the terms of SCA: At...
sca@askmonty.org
10-21-2009 05:51 AM
sca@askmonty.org Go to last post
5 162
Hi all, I would like to thank you all for the comments I received on the draft for creating a physical structure. We made some changes to the...
Mats Kindahl
10-21-2009 05:42 AM
Mats Kindahl Go to last post
2 189
Hi all, the coding style changes, agreed upon by the MySQL Server coding style government committee on 2009-06-26, is now part of the Coding...
Ingo Str√ľwing
10-21-2009 05:37 AM
Michael Widenius Go to last post
18 245
Have you wasted time on valgrind warnings from code that uses String:c_ptr instead of String:c_ptr_safe? Have you fixed bugs caused by the use of...
MARK CALLAGHAN
10-15-2009 12:19 PM
Michael Widenius Go to last post
5 137
Hello there, We're developing a custom storage engine based on MySQL server 5.1.39. Does this version optimize IN/EXIST sub queries with SEMI or...
Zhixuan Zhu
10-08-2009 01:54 PM
Sergei Golubchik Go to last post
6 148
Hello, I would like to make sure that I understand the meaning of the functions handler::scan_time and handler::read_time. Both are to be estimates...
Zardosht Kasheff
10-08-2009 01:40 PM
Sergei Golubchik Go to last post
9 128
Hi all How does Thread Scheduling work in Mysql in general? Assume I create a thread t1(child thread) inside a query thread (parent thread)...
Patrick Lau
09-29-2009 04:26 PM
Guilhem Bichot Go to last post
1 165
Hello all, While implementing our storage engine's version of show engine status, I noticed that if the handlerton function show_status ever returns...
Zardosht Kasheff
09-29-2009 11:48 AM
Konstantin Osipov Go to last post
3 141
Sorry to bother since I just posted it to the general discussion list and I think I got the wrong place... -----Original Message----- From: Wenbin...
Wenbin Zhang
09-28-2009 11:32 AM
Joerg Bruehe Go to last post
2 149
Hi Oysten, ōystein GrÝvlen a ťcrit, Le 21.09.2009 11:05: In the bug report you mentioned: ************** Oystein Grovlen The different behavior...
Guilhem Bichot
09-24-2009 11:30 AM
ōystein GrÝvlen Go to last post
1 144
Hello Sergey, I'm looking at http://bugs.mysql.com/bug.php?id=46407 "EXPLAIN says that FirstMatch is used while optimizer_switch.firstmatch is...
Guilhem Bichot
09-23-2009 01:25 AM
Sergey Petrunya Go to last post
5 172
Hi, I'd like to offer the following bugfix under BSD licence: == Licence == Copyright (c) 2009, Monty Program Ab All rights...
Sergey Petrunya
09-17-2009 01:07 AM
Masood Mortazavi Go to last post
7 172
HI I'm working on Bug #46860 Crash/segfault using EXPLAIN EXTENDED on query using UNION in subquery This query: create table `t1` (`a` int)...
Tor Didriksen
09-15-2009 09:06 PM
Guilhem Bichot Go to last post
4 186
Hi all, I have a suggestion for a change of the text in the naming conventions. This is more or less already the style used in the code, so it is...
Mats Kindahl
09-09-2009 09:03 AM
Mats Kindahl Go to last post
2 148
I stumbled across this comment. What is a 100 nanosec unit? Why was that used instead of nanosecs or microsecs? /* get time since epoc in 100...
MARK CALLAGHAN
08-26-2009 02:23 AM
Sergei Golubchik Go to last post
1 139
hi has anyone had a look at http://bazaar-vcs.org/BzrPipeline ?? I like the possibility to stack my changes on top of each other, and walk up and...
Tor Didriksen
08-26-2009 02:11 AM
Tor Didriksen Go to last post
1 189
--Boundary_(ID_Rc3xddQG36tax2d6fcFo0w) Content-type: text/plain Content-transfer-encoding: 7BIT Hi guys, I am having a problem with some plugins, I...
Andrew Hutchings
08-24-2009 12:51 PM
Andrew Hutchings Go to last post
2 136
To quote mysqldump.c " /* Create a table with the same name as the view and with columns of the same name in order to satisfy views that...
Rob Wultsch
08-24-2009 10:06 AM
Konstantin Osipov Go to last post
6 157
* MARK CALLAGHAN <mdcallag (AT) gmail (DOT) com> : A socket library doesn't have to rely on SO_SNDTIMEO/SO_RCVTIMEO, it could use poll/select and...
Konstantin Osipov
08-19-2009 06:55 PM
Konstantin Osipov Go to last post
1 277
I am having last minute issues with these 2 statements. I have spent most of the day looking at the issue but have not had any luck solving it. If...
Joseph Lukas
08-16-2009 09:48 AM
Michael Widenius Go to last post
2 186
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