[Neo] Dijkstra search on a big graph

Johan Svensson johan at neotechnology.com
Wed Feb 17 14:15:36 CET 2010


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?


More information about the User mailing list