… MySQL releases. First one is automatically stack trace for x86_64 systems. Currently MySQL resolves stack in crash only for x86 boxes. You…
Comment: Three ways that the poor man's profiler can hurt MySQL
December 3, 2011 By 19 Comments
… I hacked together a proof-of-concept for obtaining pmp stack traces directly using libunwind, without GCC: https://github.com/knielsen/knielsen… lot more when attaching a process than just obtain the stack traces. Or maybe Facebook already does this? Anyway, I agree that… process is never free. Still, with a faster tool the stack traces can be obtained (and the server process kept stopped) for…
Post: Ultimate MySQL variable and status reference list
January 8, 2011 By 4 Comments
…sync_slave_statusblogpercona.commanual rpl_semi_sync_slave_trace_levelblogpercona.commanual Rpl_statusblogpercona.commanual safe_modeblogpercona….skip_slave_startblogpercona.commanual skip_sslblogpercona.commanual skip_stack_traceblogpercona.commanual skip_symbolic_linksblogpercona.commanual skip_…
Post: Three ways that the poor man's profiler can hurt MySQL
December 2, 2011 By 19 Comments
… the running server: GDB forklifts the process and gets a stack trace from every thread, then lets it go on working. But… developed a variety of tools that can help them get stack traces less intrusively. I think we need to investigate some of…
Post: Getting MySQL Core file on Linux
August 26, 2011 By 1 Comment
…, you will even see some stack trace, probably something like this from main thread: stack_bottom = (nil) thread_stack 0×40000 /usr/sbin/mysqld(my…
Post: Debugging sleeping connections with MySQL
February 8, 2007 By 28 Comments
… good ideas – for example in this case I could find stack trace originated from php stream functions not from libmysql or memcache…. There might be some smarter tools out where for production tracing.
Post: How Percona diagnoses MySQL server stalls
March 3, 2011 By 6 Comments
… collect tool makes it easy to gather snapshots of waiting (stack traces) and CPU consumption (oprofile). That’s important because sometimes the…
Post: Percona Server with XtraDB Case Study, Behind the Scenes
October 21, 2010 By 13 Comments
… queries I found was caused by different things. Sometimes GDB stack traces showed InnoDB mutex contention, sometimes oprofile showed the query cache…
Comment: Alternatives of PHP ?
September 11, 2006 By 28 Comments
… makes them complicated. You can take a look at any stack trace posted for Connector/J bugs… it is rarely less than…
Comment: Using MyISAM in production
July 6, 2006 By 35 Comments
Hi Ananth, The stack trace you’re showing is actually crash. If MySQL did not …
