Michael, Add this to you're my.cnf and then restart mysql. See if that solves your problem.
open-files-limit=36864 Donny > -----Original Message----- > From: Michael Bacarella [mailto:[EMAIL PROTECTED] > Sent: Monday, March 08, 2004 4:52 PM > To: [EMAIL PROTECTED] > Subject: Re: "Can't create thread" > > > > We recently started getting "Can't create thread" errors since > > > switching to Debian. > > > > > > On Red Hat 8.0 we were able to spawn more than 400 mysql threads > > > and never encountered this error. mysql 3.23.56 compiled from > > > source, stock kernel. (2GB of RAM) > > > > > > Now we get it all the time on Debian and the MySQL AB 3.23.58 > > > binary around 245 threads, linux 2.4.23 custom kernel. (3GB of RAM, > > > not that it matters) > > > > > > Are we missing a setting? > > > > > > Does Red Hat have some kind of userland address space hack that > > > we're not aware of? > > > > Do you have any special kernel config options that you did not use > before? > > Actually, we just found something interesting on the Debian box. > > # ps aux | grep mysqld > [...] > mysql 25303 0.4 30.4 1228720 947112 ? S 16:16 0:23 > /usr/local/mysql/bin/mysqld --defaults-extra- > file=/usr/local/mysql/data/my.cnf --basedir=/usr/local/mysql/ -- > datadir=/usr/local/mysql/data --user=mysql --pid- > file=/usr/local/mysql/data/dbms3.pid --skip-locking > [...] > > # tail /proc/25303/maps > bee01000-bf000000 rwxp 00001000 00:00 0 > bf000000-bf001000 ---p 00000000 00:00 0 > bf001000-bf200000 rwxp 00001000 00:00 0 > bf200000-bf201000 ---p 00000000 00:00 0 > bf201000-bf400000 rwxp 00001000 00:00 0 > bf400000-bf401000 ---p 00000000 00:00 0 > bf401000-bf600000 rwxp 00001000 00:00 0 > bf600000-bf601000 ---p 00000000 00:00 0 > bf601000-bf800000 rwxp 00001000 00:00 0 > bfffa000-c0000000 rwxp ffffb000 00:00 0 > > the thread stacks are 2MB apiece (bf601000-bf800000 is > 2093056 bytes, or 2044kB)! Yet: > > # mysql -e 'show variables' | grep thread_stack > thread_stack 196608 > > It seems like the setting does nothing for us. We top out at > exactly 256 threads. > > -- > Michael Bacarella 24/7 phone: 1-646-641-8662 > Netgraft Corporation http://netgraft.com/ > > -- > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: > http://lists.mysql.com/[EMAIL PROTECTED] > -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
