[Neo] Dijkstra search on a big graph

Anton Popov popov.UA.work at gmail.com
Tue Feb 9 11:17:40 CET 2010


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?
> >
> >
> >> Regards,
> >> -Johan
> >
> > --
> > Best regards,
> > Popov Anton
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-- 
Best regards,
Popov Anton


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