Re: [Neo4j] Neo Server slow on frequent requests

Hi Dario, I just had a peek at the thread dump, and it appear that it was not captured during the frozen period. Is that correct? If captured when the system appears frozen, it will show information about what the threads are doing or waiting for. Thanks, David On Wed, Apr 13, 2011 at 2:50 AM,

Re: [Neo4j] Neo Server slow on frequent requests

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

Re: [Neo4j] Neo Server slow on frequent requests

Hey, Somehow my attached files always get deleted. Heres the dump: https://gist.github.com/917199 Cheers, Dario Am 13.04.11 10:30 schrieb Dario Rexin unter dario.re...@xing.com: Hi Tobias, Here's the thread dump you asked for. Thank you for taking a look at this. Cheers, Dario

Re: [Neo4j] Neo Server slow on frequent requests

Hi Dario, This dump looks perfectly fine, the expected threads are there, but they are all idle waiting for work. When I asked for a thread dump, I wanted one from when the server was under load and you experienced problems. Sorry for not being clear about that. Cheers, Tobias On Wed, Apr 13,

Re: [Neo4j] Neo Server slow on frequent requests

Hi Tobias, I was already sending requests to the server in the last dump. Here is another, hopefully this one is more helpful. The longer I request data, the longer it takes for the server to answer. After some time it frequently freezes for up to several seconds without answering to any of the

Re: [Neo4j] Neo Server slow on frequent requests

That one looks much more interesting. I'm too tired right now, but I'll look at it tomorrow. On Wed, Apr 13, 2011 at 11:50 AM, Dario Rexin dario.re...@xing.com wrote: Hi Tobias, I was already sending requests to the server in the last dump. Here is another, hopefully this one is more

Re: [Neo4j] Neo Server slow on frequent requests

Hi, Dario. I suspect we might be seeing some of the same issues, in an environment where we are simultaneously writing a steady stream of data into neo while also attempting to query it back out. The very nature of our graph design requires that there be a few mother nodes for various

Re: [Neo4j] Neo Server slow on frequent requests

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