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SQLite training in Houston TX on 2019-11-05 (details)
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Comment:Add more detail to the header command to further explain how to compile and use the kvtest.c utility.
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SHA1: 55d29839c9fafe9e6a694f5790151d1f22396b01
User & Date: drh 2016-12-29 16:49:22
Context
2016-12-29
16:58
Add the kvtest.c test program used to show that it is many times faster to read thumbnail and similar BLOBs out of an SQLite database than it is to read them as separate files from the filesystem. check-in: 8074d59c user: drh tags: trunk
16:49
Add more detail to the header command to further explain how to compile and use the kvtest.c utility. Closed-Leaf check-in: 55d29839 user: drh tags: kvtest
16:18
Fix kvtest.c so that it compiles using MSVC. check-in: e2bbeae7 user: drh tags: kvtest
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Changes to test/kvtest.c.

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*************************************************************************
**
** This file implements "key-value" performance test for SQLite.  The
** purpose is to compare the speed of SQLite for accessing large BLOBs
** versus reading those same BLOB values out of individual files in the
** filesystem.
**
** Run "kvtest --help" for further information, or see comments below.











































*/
static const char zHelp[] = 
"Usage: kvhelp COMMAND ARGS...\n"
"\n"
"   kvhelp init DBFILE --count N --size M --pagesize X\n"
"\n"
"        Generate a new test database file named DBFILE containing N\n"







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*************************************************************************
**
** This file implements "key-value" performance test for SQLite.  The
** purpose is to compare the speed of SQLite for accessing large BLOBs
** versus reading those same BLOB values out of individual files in the
** filesystem.
**
** Run "kvtest" with no arguments for on-line help, or see comments below.
**
** HOW TO COMPILE:
**
** (1) Gather this source file and a recent SQLite3 amalgamation with its
**     header into the working directory.  You should have:
**
**          kvtest.c       >--- this file
**          sqlite3.c      \___ SQLite
**          sqlite3.h      /    amlagamation & header
**
** (2) Run you compiler against the two C source code files.
**
**    (a) On linux or mac:
**
**        OPTS="-DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION"
**        gcc -Os -I. $OPTS kvtest.c sqlite3.c -o kvtest
**
**             The $OPTS options can be omitted.  The $OPTS merely omit
**             the need to link against -ldl and -lpthread, or whatever
**             the equivalent libraries are called on your system.
**
**    (b) Windows with MSVC:
**
**        cl -I. kvtest.c sqlite3.c
**
** USAGE:
**
** (1) Create a test database by running "kvtest init" with appropriate
**     options.  See the help message for available options.
**
** (2) Construct the corresponding pile-of-files database on disk using
**     the "kvtest export" command.
**
** (3) Run tests using "kvtest run" against either the SQLite database or
**     the pile-of-files database and with appropriate options.
**
** For example:
**
**       ./kvtest init x1.db --count 100000 --size 10000
**       mkdir x1
**       ./kvtest export x1.db x1
**       ./kvtest run x1.db --count 10000 --max-id 1000000
**       ./kvtest run x1 --count 10000 --max-id 1000000
*/
static const char zHelp[] = 
"Usage: kvhelp COMMAND ARGS...\n"
"\n"
"   kvhelp init DBFILE --count N --size M --pagesize X\n"
"\n"
"        Generate a new test database file named DBFILE containing N\n"