2012/11/12 Ben Caradoc-Davies <ben.caradoc-dav...@csiro.au>
> Nahum,
>
> CentOS (and other Red Hat derived distributions) run a daily prelink cron
> job:
> http://en.wikipedia.org/wiki/**Prelink<http://en.wikipedia.org/wiki/Prelink>
>
> This (or normal system updates) almost certainly explains the changes you
> see in libc.
>
> A nonprivileged user will not be able to modify your libc.
>
> JDK 7 is not supported. GeoServer failures with JDK 7 are expected.
>
> If you see system corruption, you likely have a hardware problem. (This is
> now off-topic for this list.)
>
> Please conduct the following hardware tests:
>
> (1) Run Memtest86+ for 24 hours to test for bad RAM. This utility should
> be present as a syslinux boot option on all Red Hat installation media:
> http://en.wikipedia.org/wiki/**Memtest86<http://en.wikipedia.org/wiki/Memtest86>
>
Already running for 18 hours till tomorrow.
>
> (2) Run mprime/Prime95 for 24 hours
> http://en.wikipedia.org/wiki/**Prime95#Use_for_stress_testing<http://en.wikipedia.org/wiki/Prime95#Use_for_stress_testing>
> You can obtain mprime (64-bit Linux) here:
> http://mersenne.org/freesoft/
>
> The command under Linux for stress testing is "mprime -t".
>
Thanks, I'll do next
>
> If your computer can run "mprime -t" for 24 hours without errors, your
> computer is "prime stable". This only tests your motherboard, CPU and RAM.
> If you see errors, it means that your hardware is unreliable.
>
> Also install smartmontools and use smartctl to run HDD self-tests.
>
> Kind regards,
> Ben.
Many, many thaks to the list.
>
>
> On 13/11/12 05:00, Nahum Castro wrote:
>
>> Found It!
>>
>> Seems to jdk 1.7 update 6 to 1.7 update 9 corrupt in some way glibc, I
>> made a md5 checksum on all my library files and after setup with those
>> jdks and after running geowebcache in several layers I noted changes
>> glibc, with a diff the chechksum of glibc change.
>>
>> Odd. :(
>>
>> Do you know any tool to investigate such changes?.
>>
>> Thanks in advance.
>> Nahum
>>
>>
>> 2012/11/12 Andrea Aime <andrea.a...@geo-solutions.it
>> <mailto:andrea.aime@geo-**solutions.it <andrea.a...@geo-solutions.it>>>
>>
>>
>> On Mon, Nov 12, 2012 at 6:14 PM, Andrea Aime
>> <andrea.a...@geo-solutions.it
>> <mailto:andrea.aime@geo-**solutions.it<andrea.a...@geo-solutions.it>
>> >>
>>
>> wrote:
>>
>> I agree with Stefan this looks a lot like faulty hardware,
>> your accusations are grave and you
>> should verify better before making such statements on a
>> public list, especially writing
>> them as "truth" instead of asking around what the possible
>> cause is.
>>
>>
>> Btw, "faulty hardware" does not necessarily mean the computer
>> itself, motherboards
>> often "fry" due to power issues, it may be that GeoServer is loading
>> the machine
>> more than other software, which makes the CPU/motherboards require
>> more current, which in turn
>> triggers the problem in your electricity source
>>
>> Cheers
>> Andrea
>>
>> --
>> ==
>> Our support, Your Success! Visit
>> http://opensdi.geo-solutions.**it<http://opensdi.geo-solutions.it>for
>> more information.
>> ==
>>
>> Ing. Andrea Aime
>> @geowolf
>> Technical Lead
>>
>> GeoSolutions S.A.S.
>> Via Poggio alle Viti 1187
>> 55054 Massarosa (LU)
>> Italy
>> phone: +39 0584 962313
>> fax: +39 0584 1660272
>> mob: +39 339 8844549
>>
>> http://www.geo-solutions.it
>> http://twitter.com/**geosolutions_it<http://twitter.com/geosolutions_it>
>>
>> ------------------------------**-------------------------
>>
>>
>>
>>
>> --
>> Nahum Castro González
>> Blvd. Perdigón 214, Brisas del Lago.
>> CP 37216
>> León, Guanajuato, México
>> Tel (477)1950304
>>
>
> --
> Ben Caradoc-Davies <ben.caradoc-dav...@csiro.au>
> Software Engineer
> CSIRO Earth Science and Resource Engineering
> Australian Resources Research Centre
>
--
Nahum Castro González
Blvd. Perdigón 214, Brisas del Lago.
CP 37216
León, Guanajuato, México
Tel (477)1950304
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