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bughunt_template.cfg
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bughunt_template.cfg
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# Copyright (C) 2008 Sun Microsystems, Inc. All rights reserved. Use
# is subject to license terms.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
# USA
# Configuration file template for util/bughunt.pl
#
# Please
# - copy this file to for example bughunt1.cfg and
# - adjust the settings so that they fit to your usage case and
# environment
#
{
# desired_status_codes
#---------------------
# List of status codes we are hunting for.
# Status codes are described in lib/GenTest/Constants.pm
# STATUS_ANY_ERROR means any RQG error like for example deadlock or server crash.
#
desired_status_codes => [+STATUS_ANY_ERROR],
# expected_output
#----------------
# String pattern which needs to occur within the RQG output.
# The search pattern is usually derived from a backtrace.
# Example 1:
# Starting point is a crash of a server which was compiled with debug.
# @expected_output =>
# [
# 'mysql_execute_command .* at sql_parse.cc\:4441',
# 'mysql_parse .* at sql_parse.cc\:5991',
# 'dispatch_command .* at sql_parse.cc\:1074'
# ];
# Please be careful when using source file line numbers in search patterns
# - They increase the selectivity of the search.
# - There is a significant risk that the line numbers do no more fit
# if the source code of the server gets changed.
# Example 2:
# Starting point is a crash of a server which was compiled without debug.
# expected_output => [
# '0x0000000000413f61',
# '0x00000000004429a0',
# '0x0000000000453f0f'
# ]
# Just some adresses looks ugly but it works quite good.
# Example 3:
# If you just hunt for some status code ( -> desired_status_codes ) use
# expected_output => [ ]
#
expected_outputs => [ '' ],
# grammar
#--------
# RQG grammar file which should be used for the bug hunting process.
#
grammar => 'conf/runtime/WL5004_sql.yy',
gendata => 'conf/runtime/WL5004_data.zz',
# rqg_options
#------------
# runall.pl (RQG) options which should be used
#
rqg_options => {
# rpl_mode => 'mixed',
threads => 10,
queries => 10000,
duration => 1200,
reporter => 'Deadlock,Backtrace,ErrorLog'
},
# basedir
#--------
# Main installation directory of the server software
#
basedir => '/work2/5.1/mysql-5.1-rep+3/',
# Mysqld options
#---------------
# Mysql server options passed to RQG in addition to the rqg_options
#
mysqld => {
'loose-innodb-lock-wait-timeout' => 1,
'lock-wait-timeout' => 1,
# 'plugin-dir' => '/work2/5.1/mysql-5.1-rep+3/plugin/semisync/.libs',
# 'plugin-load' => 'rpl_semi_sync_master=libsemisync_master.so:rpl_semi_sync_slave=libsemisync_slave.so',
# 'rpl_semi_sync_master_enabled' => 1,
# 'rpl_semi_sync_slave_enabled' => 1,
'log-output' => 'none'
},
# trials
#-------
# This is the number of times the oracle() will run the RQG in order to get to
# the desired status code and/or desired string (expected_output).
# If an error is sporadic, several runs may be required to show that this error
# is present.
# The "mask" and "seed" values get incremented per trial.
#
trials => 50,
#--------------------------------------------------------------------------
# PARAMETERS AFFECTING THE VARIATIONS OF THE TEST PERFORMED DURING BUG HUNT
#--------------------------------------------------------------------------
# Seed affects which alternative of a grammar element or random value is selected
#--------------------------------------------------------------------------------
# The variation of the seed value has a smaller impact than the masking of grammar
# element alternatives.
#
# initial_seed
#-------------
# Seed value to use for the first RQG run. The seed value changes per RQG run.
#
initial_seed => 1,
# Masking of alternatives within grammar elements
#------------------------------------------------
# Masking has a much bigger impact on what gets finally executed than a variation
# of the seed value. It could destroy well balanced ratios between for example
# DROP and CREATE or DELETE and INSERT. The final outcome might be an exceptional
# growth of the stored data or most statements meeting no or empty tables.
# If you want to switch off "masking" for all RQG runs than please
# set "mask_level => 0"
#
# mask_level
#-------------------
# Level within the grammar hierarchy till which masking has to be applied.
# This value is to be used for all RQG runs.
# A value of 0 causes that no masking will be applied.
# Values > 30 affect most probably all grammar elements.
#
mask_level => 0,
# initial_mask
#-------------
# Masking value to be used for the first RQG run. The mask value changes per RQG run.
# Though a value of 0 causes that no masking gets applied for the current RQG run,
# a successing run will be withg masking.
#
initial_mask => 0,
# vardir_prefix
#--------------
# "Server activity" should happen in "vardir" which is a subdirecty of
# "vardir_prefix".
# Important points are:
# - Sufficient free space within the filesystem
# - performance of the filesystem
# RQG runs get a significant speed up if a memory based filesystem is used.
#
vardir_prefix => '/dev/shm',
# storage_prefix
#---------------
# Grammars and logs of RQG runs which showed the errors and output we are hunting
# for are stored in a subdirectory of "storage_prefix".
#
storage_prefix => './storage',
# search_var_size
#----------------
# Number of bytes (counted from the end of the output file) to be used during
# search for expected_output We suck the last "search_var_size" Bytes of the file
# to be searched into a variable.
# A too huge "search_var_size" could cause problems.
# The relevant zone within the file is maybe
# - smaller
# If our search pattern is unfortunately a bit unspecific and if it
# could also occur within irrelevant zones of the file than we might
# get false positives. Decreasing "search_var_size" might help.
# - bigger
# We might get false negatives. Increasing "search_var_size" might
# help but I am unsure if any OS and PERL implementation supports
# such a monstrous variable.
#
search_var_size => 1000000
}