[Neo] Dijkstra search on a big graph

Anton Popov popov.UA.work at gmail.com
Mon Feb 22 09:33:55 CET 2010


Hello,

Cool, let me know if there will be any changes.

On 17 February 2010 15:15, Johan Svensson <johan at neotechnology.com> wrote:

> Hi,
>
> Just wanted to say that I have successfully reproduced the warning
> messages and we will have a look at this.
>
> -Johan
>
> On Tue, Feb 9, 2010 at 11:17 AM, Anton Popov <popov.UA.work at gmail.com>
> wrote:
> > Hello johan,
> >
> > apopov at mars:~$ java -version
> > java version "1.6.0_16"
> > Java(TM) SE Runtime Environment (build 1.6.0_16-b01)
> > Java HotSpot(TM) 64-Bit Server VM (build 14.2-b01, mixed mode)
> >
> > apopov at mars:~$ uname -svr
> > Linux 2.6.28-18-generic #59-Ubuntu SMP Thu Jan 28 01:40:19 UTC 2010
> >
> > On 8 February 2010 21:38, Johan Svensson <johan at neotechnology.com>
> wrote:
> >
> >> Hi Anton,
> >>
> >> Sounds like you can reproduce this problem? If so I would definitely
> >> like to have a look at it.
> >>
> >> Btw, what JVM and Linux kernel version are you running?
> >>
> >> -Johan
> >>
> >> On Mon, Feb 8, 2010 at 3:59 PM, Anton Popov <popov.UA.work at gmail.com>
> >> wrote:
> >> > Hello Johan,
> >> >
> >> > Thanks for your answer & see my answers below:
> >> >
> >> > On 8 February 2010 11:15, Johan Svensson <johan at neotechnology.com>
> >> wrote:
> >> >
> >> >> Hi,
> >> >>
> >> >> How large heap have you set? I see that you have allocated 3G for
> >> >> memory mapping that leaves about 512M max left for heap size since OS
> >> >> (and other on OS processes) needs some memory.
> >> >>
> >> >
> >> > Yes, I've set 3G for memory mapping, but application allocated only
> 1.8G,
> >> > that leaves enough memory for OS, imho. Anyway, changing parameters of
> >> > property file 1G -> 500M (so max allocated memory should be 1.5G
> instead
> >> of
> >> > 3G) changes nothing. I've got the same exceptions.
> >> >
> >> >
> >> >> I have not seen this stacktrace on Linux (used to happen a lot on
> >> >> 32-bit windows versions since the 2G continuous map limit really
> >> >> wasn't 2G).
> >> >>
> >> >
> >> > I use 64-bit PC if this matters.
> >> >
> >> > Try lower nodestore memory mapped settings (check how large file is,
> >> >> should not be 1GByte?) and see if that helps.
> >> >>
> >> >
> >> > As described above - using any setting values has no influence on my
> app.
> >> To
> >> > be sure, I can say that small routes are found pretty fine, without
> any
> >> > exceptions.
> >> > What file you are talking about?
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-- 
Best regards,
Popov Anton


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