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From:Dilipkumar Date:June 8 2006 3:13am
Subject:Re: MySQL crashes
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This might be a bug try to create mysql stack trace file and find out 
what is causing for mysql
crash, this might be a query hitting mysql and also memory related 
issues.Try to upgrade your
mysql and report back.

Daniel da Veiga wrote:

> On 6/7/06, Ian Collins <ian.collins@stripped> wrote:
>> I have a site running MySQL 4.1.19.
>> When I was first given the problem, the site only stayed up for a couple
>> of days - they then found they had to reboot (as opposed to just
>> restarting MySQL).
>> The error message they were getting is below (between the snip's).
>> After looking at the site, I altered some my.cnf parameters, and then
>> the site stayed up for 14 days before doing the same.
>> This site is identical to others I have seen - that are running with no
>> issues.
>> Could this be hardware (memory related)?
>> Regards,
>> Ian Collins.
>> ============================================ snip
>> =======================================
>> Version: '4.1.9-standard'  socket: '/tmp/mysql.sock'  port: 3306
>> Official MySQL RPM
>> 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
>> diagnose
>> the problem, but since we have already crashed, something is definitely
>> wrong
>> and this may fail.
>> key_buffer_size=134217728
>> read_buffer_size=131072
>> max_used_connections=80
>> max_connections=400
>> threads_connected=68
>> It is possible that mysqld could use up to
>> key_buffer_size + (read_buffer_size + sort_buffer_size)*max_connections
>> = 1001468 K
>> bytes of memory
>> Hope that's ok; if not, decrease some variables in the equation.
>> thd=0x8e6d0c0
>> 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...
>> Cannot determine thread, fp=0xbfb1f5d8, backtrace may not be correct.
>> Stack range sanity check OK, backtrace follows:
>> 0x808e1b7
>> 0x82e5a08
>> 0x80b68f6
>> 0x804c0bd
>> 0x804bfb3
>> 0x808473c
>> 0x808ddb3
>> 0x809b8e6
>> 0x82e31bc
>> 0x830ca8a
>> New value of fp=(nil) failed sanity check, terminating stack trace!
>> Please read and
>> follow instructions on how to resolve the stack trace. Resolved
>> stack trace is much more helpful in diagnosing the problem, so please do
>> resolve it
>> Trying to get some variables.
>> Some pointers may be invalid and cause the dump to abort...
>> thd->query at (nil)  is invalid pointer
>> thd->thread_id=52266
>> The manual page at contains
>> information that should help you find out what is causing the crash.
>> Number of processes running now: 0
>> ============================================ snip
>> =======================================
> You mean 4.1.9, not 4.1.19 right? Try upgrading your server to the
> latest 4.1, I believe its 4.1.20, and report back... I`ve seen various
> issues with versions below 4.1.12...

Thanks & Regards,
DBA Support

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MySQL crashesIan Collins8 Jun
  • Re: MySQL crashesDaniel da Veiga8 Jun
    • Re: MySQL crashesDilipkumar8 Jun