> Hardware?
> Operating System and version?
> MySql version?
> Precompiled, you compiled?
> Which compiler?

  Intel Dual 1Ghz, 1Gb RAM, RedHat Linux 6.2, kernel 2.4.16, MySQL 3.23.52
from rpms (happened the same with 3.23.46). As I said before, this only
happens the last few days, we were running for almost a year without much
problems.

  Anyone can explain/understand the stack trace?

  Cheers

--
  L


> [EMAIL PROTECTED] wrote:
>
> >  Hi. These last days, after some months of running relatively smoothly,
> >I've been having some trouble with MySQL. Sometimes (yesterday 4 times) it
> >just goes astray and virtually hangs. Load goes up to +200%, all
> >connections are occupied and it just doesn't do anything. The only way to
> >stop it is to killall -9 mysql because a mysqladmin shutdown won't do.
> >
> >  Looking though the error file I get this:
> >
> >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 agaist is corrupt, improperly built,
> >[...]
> >
> >key_buffer_size=402649088
> >record_buffer=8384512
> >sort_buffer=33554424
> >max_used_connections=352
> >max_connections=400
> >threads_connected=287
> >It is possible that mysqld could use up to
> >key_buffer_size + (record_buffer + sort_buffer)*max_connections = 4192696 K
> >bytes of memory
> >Hope that's ok, if not, decrease some variables in the equation
> >
> >  (Is it ok? Box is a Dual 1Ghz, 1Gb ram, Linux 2.4.16 dedicated only to
> >MySQL)
> >
> >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...
> >Stack range sanity check OK, backtrace follows:
> >0x806ede4
> >0x8120148
> >0x814ba77
> >0x80a147f
> >0x807561a
> >0x8073f97
> >
> >[...]
> >
> >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=1733
> >
> >  Everytime the box hangs I get the same stack backtrace, I have resolved
> >it and it's:
> >
> >0x806ede4 pack__12Field_stringPcPCcUi + 20
> >0x8120148 regatoi + 8
> >0x814ba6f __printf_fp + 5719
> >0x80a147f join_read_const__FP13st_join_table + 35
> >0x807561a push_front__t4List1Z3KeyP3Key + 18
> >0x8073f97 prepare__13select_exportRt4List1Z4Item + 443
> >
> >  ...but when I try to find the thread that caused it (1733 in this case)
> >in the binary log it doesn't appear so I'm unable to determine what's
> >causing the error.
> >
> >  I thought at first that it could be a load peak issue, but this error is
> >from today at 6am, and this isn't a busy hour. Everytime I get this i run
> >myisamchk -r *.MYI. It seems that after some time (+30 minutes usually)
> >mysql restarts and starts running again.
> >



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