BAUMEISTER Alexandre writes:
> Sinisa,
>
> SM> > If I add a thread on my daemons which executes a mysql_ping() each
> SM> > 30 secondes and increase net_read_timeout to 60 will it be ok ? Does
> SM> > a mysql_ping() reset net_read and net_write timer ?
>
>
> SM> This is all that mysql_ping does (on the server) :
>
> SM> send_ok(net); // Tell client we are alive
>
> SM> No resetting of anything, what so ever.
>
> Ok. So if a client does only some mysql_ping() to the server with no
> queries, there will be some timeouts in net_read or net_write ?
>
> SM> And anybody can have a bug in the code, so can you ....
>
> I'm 100% agree with you. I don't really understand why you say
> that. Did I let you think I said I never write a bug ?
>
> My code is very small and I use to write this kind of code. I can't
> find any bug, except if something changed in Mysql which makes that
> I'm not querying it the right way.
>
> To summaries the problem :
>
> * When compiling Mysql with "--without-debug" I have some "Warning:
> Got signal 14 from thread X".
>
> * When compiling Mysql with "--with-debug" and running mysqld with
> "--debug" the server crashes with :
> mysqld got signal 11;
> The manual section 'Debugging a MySQL server' tells you how to use a
> stack trace and/or the core file to produce a readable backtrace that may
> help in finding out why mysqld died.
>
> * I raised filedescriptors to 1024 but it didn't change anything.
>
> * I tried to disable thread_cache but it didn't change anything.
>
> And I can't find any error on my code which is just connecting and
> looping for doing UPDATES to Mysql tables.
>
> * I tried to set net_read_timeout and net_write_timeout to 600 in
> order to be shure that signal 14 does not come from clients not
> sending some requests to the server, but I'm getting some "Warning:
> Got signal 14 from thread X" as soon as the server runs.
>
> Alex.
>
>
>
No, I only referred to bugs as a possibility that daemon exited
without closing a connection. That is all.
There were also some reference to problems in Solaris threads that
were fixed with some recent patches.
Please check it out.
Regards,
Sinisa
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