Hi Tobias, Here's the thread dump you asked for. Thank you for taking a look at this.
Cheers, Dario Am 12.04.11 22:16 schrieb "Tobias Ivarsson" unter <tobias.ivars...@neotechnology.com>: > Hi Dario, > > Looking at that picture it is indeed clear that a number of threads are > waiting for something. What is not shown is the more important information > about *what* they are waiting for. I would love to get information like that > in order to investigate the cause of the performance problem you are seeing. > If you could send a thread dump instead of a screenshot that would be a lot > more useful, since that would contain information about contention that I > could actually analyze. The easiest way to get a thread dump is by sending > the SIGQUIT signal (kill -3) to the JVM process running Neo4j. > > Cheers, > Tobias > > On Tue, Apr 12, 2011 at 6:35 PM, Dario Rexin <dario.re...@xing.com> wrote: > >> Hi all, >> >> Due to huge performance issues with some of our neo queries I profiled my >> calls on the neo server. The profiling shows, that up to 85% of the time the >> threads are waiting for other threads. I don¹t understand what¹s going on >> there. Hopefully someone with a deeper knowledge can help me. Am I doing >> something wrong, or is it normal, that most of the time the threads are >> blocking each other? Her is a screenshot, showing the results of my >> profiling: http://i.imgur.com/eIfam.jpg >> >> >> Thanks in advice, >> >> Dario >> _______________________________________________ >> Neo4j mailing list >> User@lists.neo4j.org >> https://lists.neo4j.org/mailman/listinfo/user >> > > -- Dario Rexin Junior Manager Engineering dario.re...@xing.com XING AG Gaensemarkt 43, 20354 Hamburg, Germany Commercial Reg. (Registergericht): Amtsgericht Hamburg, HRB 98807 Exec. Board (Vorstand): Dr. Stefan Groß-Selbeck (Vorsitzender), Ingo Chu, Dr. Helmut Becker, Jens Pape Chairman of the Supervisory Board (Aufsichtsratsvorsitzender): Dr. Neil Sunderland Please join my network on XING: https://www.xing.com/profile/Dario_Rexin This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorised copying, disclosure or distribution of the material in this e-mail is strictly forbidden and may be unlawful.
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