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From:Michael Gale Date:June 15 2005 2:04am
Subject:InnnoDb - change innodb_buffer_pool_size ?
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	I am running mysql 4.0.20 with Innodb and we have upgrade grade the RAM 
in the system from 1GB to 4GB :).

Now If I change the:


 From 500M to 3G the service will not start. I remember reading 
something about this before and I believe I need to delete the 
ib_logfile* files or something .. and they will get recreated on start up ??

Any help is appreciated :)

Here is my mysql.log output:

050614 19:50:50  mysqld started
050614 19:50:50 Warning: Asked for 196608 thread stack, but got 126976
InnoDB: Fatal error: cannot allocate 3221241856 bytes of
InnoDB: memory with malloc! Total allocated memory
InnoDB: by InnoDB 20288332 bytes. Operating system errno: 12
InnoDB: Cannot continue operation!
InnoDB: Check if you should increase the swap file or
InnoDB: ulimits of your operating system.
InnoDB: On FreeBSD check you have compiled the OS with
InnoDB: a big enough maximum process size.
InnoDB: We now intentionally generate a seg fault so that
InnoDB: on Linux we get a stack trace.
mysqld got signal 11;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
We will try our best to scrape up some info that will hopefully help 
the problem, but since we have already crashed, something is definitely 
and this may fail.

It is possible that mysqld could use up to
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections 
= 3546735 K
bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
Bogus stack limit or frame pointer, fp=0xbfffeb88, 
stack_bottom=0x20386365, thread_stack=126976, aborting backtrace.
Trying to get some variables.
Some pointers may be invalid and cause the dump to abort...
thd->query at 0x64207369  is invalid pointer
The manual page at contains
information that should help you find out what is causing the crash.
050614 19:50:50  mysqld ended

InnnoDb - change innodb_buffer_pool_size ?Michael Gale15 Jun
  • RE: InnnoDb - change innodb_buffer_pool_size ?Partha Dutta15 Jun
    • Re: InnnoDb - change innodb_buffer_pool_size ?Michael Gale15 Jun
      • Re: InnnoDb - change innodb_buffer_pool_size ?Joerg Bruehe15 Jun
  • Re: InnnoDb - change innodb_buffer_pool_size ?Michael Gale15 Jun
    • Re: InnnoDb - change innodb_buffer_pool_size ?Jeff Smelser15 Jun