* gcore command on 6.3 seems to generate smaller core than it should
@ 2005-09-13 3:51 Chris Markle
2005-09-13 3:55 ` Daniel Jacobowitz
0 siblings, 1 reply; 8+ messages in thread
From: Chris Markle @ 2005-09-13 3:51 UTC (permalink / raw)
To: gdb
Folks,
Using GNU gdb 6.3 on 2.6.12.5 kernel (uname -a: Linux xxx.com 2.6.12.5
#1 SMP Wed Aug 31 23:52:18 PDT 2005 i686 pentium4 i386 GNU/Linux), when
I generate a core file of a Java process that is 1.9gb I get a 13mb (!)
core file. Many addresses in that core are not accessible. There is no
complaining from gcore about not enough space or other issues when I
issue it, and ulimit show core blocks as unlimited. When I tried it on
2.6.something-else with GNU gdb Red Hat Linux (5.3.90-0.20030710.40rh) I
get a full very large core file.
Chris
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: gcore command on 6.3 seems to generate smaller core than it should
2005-09-13 3:51 gcore command on 6.3 seems to generate smaller core than it should Chris Markle
@ 2005-09-13 3:55 ` Daniel Jacobowitz
2005-09-13 5:58 ` Chris Markle
0 siblings, 1 reply; 8+ messages in thread
From: Daniel Jacobowitz @ 2005-09-13 3:55 UTC (permalink / raw)
To: Chris Markle; +Cc: gdb
On Mon, Sep 12, 2005 at 08:51:12PM -0700, Chris Markle wrote:
> Folks,
>
> Using GNU gdb 6.3 on 2.6.12.5 kernel (uname -a: Linux xxx.com 2.6.12.5
> #1 SMP Wed Aug 31 23:52:18 PDT 2005 i686 pentium4 i386 GNU/Linux), when
> I generate a core file of a Java process that is 1.9gb I get a 13mb (!)
> core file. Many addresses in that core are not accessible. There is no
> complaining from gcore about not enough space or other issues when I
> issue it, and ulimit show core blocks as unlimited. When I tried it on
> 2.6.something-else with GNU gdb Red Hat Linux (5.3.90-0.20030710.40rh) I
> get a full very large core file.
What kind of mappings are missed? What doesn't show up in the core
file?
--
Daniel Jacobowitz
CodeSourcery, LLC
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: gcore command on 6.3 seems to generate smaller core than it should
2005-09-13 3:55 ` Daniel Jacobowitz
@ 2005-09-13 5:58 ` Chris Markle
2005-09-13 12:40 ` Daniel Jacobowitz
0 siblings, 1 reply; 8+ messages in thread
From: Chris Markle @ 2005-09-13 5:58 UTC (permalink / raw)
To: Daniel Jacobowitz; +Cc: gdb
Daniel,
> What kind of mappings are missed? What doesn't show up in the core
> file?
How can I tell easily? Any tips?
Chris
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: gcore command on 6.3 seems to generate smaller core than it should
2005-09-13 5:58 ` Chris Markle
@ 2005-09-13 12:40 ` Daniel Jacobowitz
2005-09-13 13:26 ` Chris Markle
0 siblings, 1 reply; 8+ messages in thread
From: Daniel Jacobowitz @ 2005-09-13 12:40 UTC (permalink / raw)
To: Chris Markle; +Cc: gdb
On Mon, Sep 12, 2005 at 10:58:12PM -0700, Chris Markle wrote:
> Daniel,
>
> >What kind of mappings are missed? What doesn't show up in the core
> >file?
>
> How can I tell easily? Any tips?
Readelf -l will show you the mapped regions of the core file.
--
Daniel Jacobowitz
CodeSourcery, LLC
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: gcore command on 6.3 seems to generate smaller core than it should
2005-09-13 12:40 ` Daniel Jacobowitz
@ 2005-09-13 13:26 ` Chris Markle
2005-09-13 13:43 ` Daniel Jacobowitz
0 siblings, 1 reply; 8+ messages in thread
From: Chris Markle @ 2005-09-13 13:26 UTC (permalink / raw)
To: gdb; +Cc: Daniel Jacobowitz
Daniel,
>>>What kind of mappings are missed? What doesn't show up in the core
>>>file?
>>>Readelf -l will show you the mapped regions of the core file.
core file created from 1.8gb process by gdb gcore command:
-rw-r--r-- 1 root root 13064248 2005-09-13 06:10 core.31810
readelf -l as requested:
> readelf -l core* > readelf.0610
> more read*
Elf file type is CORE (Core file)
Entry point 0x0
There are 4 program headers, starting at offset 52
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align
NOTE 0x0000b4 0x00000000 0x00000000 0x1667c 0x00000 R 0x1
LOAD 0x016730 0x08048000 0x00000000 0x00000 0x0e000 R E 0x1
LOAD 0x024730 0x08056000 0x00000000 0x02000 0x02000 RWE 0x1
LOAD 0x026730 0x08058000 0x00000000 0xc4f000 0xc4f000 RWE 0x1
Section to Segment mapping:
Segment Sections...
00
01 load
02 load
03 load
So if I sum up the MemSiz's it's about 0xc5f000 which is about the size
of the core. So where's the other 1.85gb including the Java heap which
was 1.5g by itself?
Here's a pmap of the process at the same time:
31810: [...]/java -server [...] -Xms1536m -Xmx1536m [...]
08056000 8K rwx-- /usr/local/sendmail/mm-2.1/jre15/bin/java
08058000 12604K rwx-- [ anon ]
44e00000 16384K rw-s- /var/sendmail/mm/counters/countdb.data
46600000 132K rwx-- [ anon ]
46621000 892K ----- [ anon ]
46800000 1020K rwx-- [ anon ]
468ff000 4K ----- [ anon ]
46a00000 992K rwx-- [ anon ]
46af8000 32K ----- [ anon ]
46b00000 1004K rwx-- [ anon ]
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46c00000 132K rwx-- [ anon ]
46c21000 892K ----- [ anon ]
46d00000 1024K rwx-- [ anon ]
46e00000 1004K rwx-- [ anon ]
46efb000 20K ----- [ anon ]
46f00000 488K rwx-- [ anon ]
46f7a000 536K ----- [ anon ]
47100000 2048K rwx-- [ anon ]
47300000 996K rwx-- [ anon ]
473f9000 28K ----- [ anon ]
47500000 772K rwx-- [ anon ]
475c1000 252K ----- [ anon ]
47700000 1016K rwx-- [ anon ]
477fe000 8K ----- [ anon ]
47800000 1004K rwx-- [ anon ]
478fb000 20K ----- [ anon ]
47900000 392K rwx-- [ anon ]
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48000000 1012K rwx-- [ anon ]
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494c3000 504K rwx-- [ anon ]
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4ba00000 1000K rwx-- [ anon ]
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4bd82000 1524K rwx-- [ anon ]
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4c2f6000 40K ----- [ anon ]
4c300000 1016K rwx-- [ anon ]
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4c400000 1024K rwx-- [ anon ]
4c525000 12K ----- [ anon ]
4c528000 504K rwx-- [ anon ]
4c5a6000 2064K r-x-- /usr/local/sendmail/mm-2.1/lib/ext/liblnxfv.so
4c7aa000 340K rwx-- /usr/local/sendmail/mm-2.1/lib/ext/liblnxfv.so
4c7ff000 1012K rwx-- [ anon ]
4c8fc000 16K ----- [ anon ]
4c97f000 12K ----- [ anon ]
4c982000 1512K rwx-- [ anon ]
4cafc000 16K ----- [ anon ]
4cb00000 1024K rwx-- [ anon ]
4cc00000 1004K rwx-- [ anon ]
4ccfb000 20K ----- [ anon ]
4cd4b000 16K r-x--
/usr/local/sendmail/mm-2.1/lib/ext/libOlympusConnector.so
4cd4f000 4K rwx--
/usr/local/sendmail/mm-2.1/lib/ext/libOlympusConnector.so
4cd50000 16K rwx-- [ anon ]
4cdb0000 648K r-x-- /lib/libstdc++.so.5
4ce52000 88K rwx-- /lib/libstdc++.so.5
4ce68000 20K rwx-- [ anon ]
4ce6d000 4K r-x--
/usr/local/sendmail/mm-2.1/lib/ext/libSyslogConnector.so
4ce6e000 4K rwx--
/usr/local/sendmail/mm-2.1/lib/ext/libSyslogConnector.so
4ce6f000 12K r-xs- /usr/local/sendmail/mm-2.1/lib/smtp.jar
4ce72000 8K r-xs-
/usr/local/sendmail/mm-2.1/lib/smicharsetprovider.jar
4ce74000 3140K r-xs- /usr/local/sendmail/mm-2.1/lib/pdfbox.jar
4d185000 152K r-xs- /usr/local/sendmail/mm-2.1/lib/mailapi.jar
4d1ab000 344K r-xs- /usr/local/sendmail/mm-2.1/lib/log4j.jar
4d201000 28K r-xs- /usr/local/sendmail/mm-2.1/lib/jilter.jar
4d208000 908K r-xs- /usr/local/sendmail/mm-2.1/lib/jfreechart.jar
4d2eb000 324K r-xs- /usr/local/sendmail/mm-2.1/lib/jcommon.jar
4d33c000 784K r-xs- /usr/local/sendmail/mm-2.1/lib/jakarta-poi.jar
4d400000 992K rwx-- [ anon ]
4d4f8000 32K ----- [ anon ]
4d507000 56K r-x-- /lib/libresolv-2.3.5.so
4d515000 8K rwx-- /lib/libresolv-2.3.5.so
4d517000 8K rwx-- [ anon ]
4d519000 16K r-x-- /lib/libnss_dns-2.3.5.so
4d51d000 8K rwx-- /lib/libnss_dns-2.3.5.so
4d51f000 80K r-x-- /usr/local/sendmail/mm-2.1/jre15/lib/i386/libnet.so
4d533000 4K rwx-- /usr/local/sendmail/mm-2.1/jre15/lib/i386/libnet.so
4d534000 64K r-xs- /usr/local/sendmail/mm-2.1/lib/jakarta-oro.jar
4d544000 3036K r-xs- /usr/local/sendmail/mm-2.1/lib/iocaine.jar
4d83b000 600K r-xs- /usr/local/sendmail/mm-2.1/lib/hsqldb.jar
4d8d1000 8K r-xs-
/usr/local/sendmail/mm-2.1/lib/eXpurgateConnector.jar
4d8d3000 252K r-xs- /usr/local/sendmail/mm-2.1/lib/dnsjava.jar
4d912000 12K ----- [ anon ]
4d915000 504K rwx-- [ anon ]
4d993000 316K r-xs- /usr/local/sendmail/mm-2.1/.install4j/i4jruntime.jar
4d9e2000 780K r-xs-
/usr/local/sendmail/mm-2.1/jre15/lib/ext/localedata.jar
4daa5000 8K r-xs- /usr/local/sendmail/mm-2.1/jre15/lib/ext/dnsns.jar
4daa7000 172K r-xs-
/usr/local/sendmail/mm-2.1/jre15/lib/ext/sunpkcs11.jar
4dad2000 152K r-xs-
/usr/local/sendmail/mm-2.1/jre15/lib/ext/sunjce_provider.jar
4daf8000 4K ----- [ anon ]
4daf9000 512K rwx-- [ anon ]
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4de82000 1528K rwx-- [ anon ]
4e005000 24K r-x-- /usr/local/sendmail/mm-2.1/jre15/lib/i386/libnio.so
4e00b000 4K rwx-- /usr/local/sendmail/mm-2.1/jre15/lib/i386/libnio.so
4e00c000 32K r-x-- /lib/libgcc_s.so.1
4e014000 4K rwx-- /lib/libgcc_s.so.1
4e015000 28K r-xs- /usr/local/sendmail/mm-2.1/lib/chardet.jar
4e01c000 48K r-xs- /usr/local/sendmail/mm-2.1/lib/activation.jar
4e028000 8K r-xs- /usr/local/sendmail/mm-2.1/lib/SyslogConnector.jar
4e02a000 20K r-xs- /usr/local/sendmail/mm-2.1/lib/OlympusConnector.jar
4e02f000 4K ----- [ anon ]
4e030000 512K rwx-- [ anon ]
4e0b0000 4K ----- [ anon ]
4e0b1000 512K rwx-- [ anon ]
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4e59f000 19460K rwx-- [ anon ]
4f8a0000 49152K rwx-- [ anon ]
528a0000 1572864K rwx-- [ anon ]
b28a4000 8K r-xs- /usr/local/sendmail/mm-2.1/lib/F-ProtConnector.jar
b28a6000 124K rwx-- [ anon ]
b28c5000 388K rwx-- [ anon ]
b2926000 7904K rwx-- [ anon ]
b30de000 24864K rwx-- [ anon ]
b4926000 8312K r-xs- /usr/local/sendmail/mm-2.1/jre15/lib/charsets.jar
b5144000 80K r-xs- /usr/local/sendmail/mm-2.1/jre15/lib/jce.jar
b5158000 484K r-xs- /usr/local/sendmail/mm-2.1/jre15/lib/jsse.jar
b51d1000 420K rwx-- [ anon ]
b523a000 34700K r-xs- /usr/local/sendmail/mm-2.1/jre15/lib/rt.jar
b741d000 76K r-x-- /usr/local/sendmail/mm-2.1/jre15/lib/i386/libzip.so
b7430000 8K rwx-- /usr/local/sendmail/mm-2.1/jre15/lib/i386/libzip.so
b7432000 132K r-x-- /usr/local/sendmail/mm-2.1/jre15/lib/i386/libjava.so
b7453000 8K rwx-- /usr/local/sendmail/mm-2.1/jre15/lib/i386/libjava.so
b7455000 44K r-x--
/usr/local/sendmail/mm-2.1/jre15/lib/i386/libverify.so
b7460000 4K rwx--
/usr/local/sendmail/mm-2.1/jre15/lib/i386/libverify.so
b7461000 32K rwxs- /tmp/hsperfdata_root/31810
b7469000 32K r-x-- /lib/libnss_files-2.3.5.so
b7471000 8K rwx-- /lib/libnss_files-2.3.5.so
b7473000 68K r-x-- /lib/libnsl-2.3.5.so
b7484000 8K rwx-- /lib/libnsl-2.3.5.so
b7486000 8K rwx-- [ anon ]
b7489000 8K r-xs-
/usr/local/sendmail/mm-2.1/lib/CloudmarkConnector.jar
b748b000 24K r-x--
/usr/local/sendmail/mm-2.1/jre15/lib/i386/native_threads/libhpi.so
b7491000 4K rwx--
/usr/local/sendmail/mm-2.1/jre15/lib/i386/native_threads/libhpi.so
b7492000 132K r-x-- /lib/libm-2.3.5.so
b74b3000 8K rwx-- /lib/libm-2.3.5.so
b74b5000 5148K r-x--
/usr/local/sendmail/mm-2.1/jre15/lib/i386/server/libjvm.so
b79bc000 392K rwx--
/usr/local/sendmail/mm-2.1/jre15/lib/i386/server/libjvm.so
b7a1e000 4188K rwx-- [ anon ]
b7e35000 1120K r-x-- /lib/libc-2.3.5.so
b7f4d000 4K r-x-- /lib/libc-2.3.5.so
b7f4e000 12K rwx-- /lib/libc-2.3.5.so
b7f51000 8K rwx-- [ anon ]
b7f53000 8K r-x-- /lib/libdl-2.3.5.so
b7f55000 8K rwx-- /lib/libdl-2.3.5.so
b7f57000 60K r-x-- /lib/libpthread-2.3.5.so
b7f66000 8K rwx-- /lib/libpthread-2.3.5.so
b7f68000 12K rwx-- [ anon ]
b7f6b000 4K r-x-- [ anon ]
b7f6c000 4K rwx-- [ anon ]
b7f6d000 4K r-x-- [ anon ]
b7f6e000 92K r-x-- /lib/ld-2.3.5.so
b7f85000 8K rwx-- /lib/ld-2.3.5.so
bf885000 12K ----- [ anon ]
bf888000 2036K rwx-- [ stack ]
ffffe000 4K ----- [ anon ]
total 1879992K
Thanks for any continued help...
Chris
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: gcore command on 6.3 seems to generate smaller core than it should
2005-09-13 13:26 ` Chris Markle
@ 2005-09-13 13:43 ` Daniel Jacobowitz
2005-09-14 5:55 ` Chris Markle
2005-09-14 15:29 ` Chris Markle
0 siblings, 2 replies; 8+ messages in thread
From: Daniel Jacobowitz @ 2005-09-13 13:43 UTC (permalink / raw)
To: Chris Markle; +Cc: gdb
On Tue, Sep 13, 2005 at 06:26:33AM -0700, Chris Markle wrote:
> LOAD 0x016730 0x08048000 0x00000000 0x00000 0x0e000 R E 0x1
> LOAD 0x024730 0x08056000 0x00000000 0x02000 0x02000 RWE 0x1
> LOAD 0x026730 0x08058000 0x00000000 0xc4f000 0xc4f000 RWE 0x1
You've got the first three mappings here;
> Here's a pmap of the process at the same time:
>
> 31810: [...]/java -server [...] -Xms1536m -Xmx1536m [...]
> 08056000 8K rwx-- /usr/local/sendmail/mm-2.1/jre15/bin/java
> 08058000 12604K rwx-- [ anon ]
> 44e00000 16384K rw-s- /var/sendmail/mm/counters/countdb.data
it got to this one and stopped.
This is probably:
2005-05-23 Michael Snyder <msnyder@redhat.com>
From Nora Pan <qpan@mvista.com>
* linux-nat.c (read_mapping): Don't stumble over entries in
mapping that have name but zero inode.
Could you try a gdb CVS snapshot (6.3.50.*)? If that doesn't work,
please post /proc/<pid>/maps.
--
Daniel Jacobowitz
CodeSourcery, LLC
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: gcore command on 6.3 seems to generate smaller core than it should
2005-09-13 13:43 ` Daniel Jacobowitz
@ 2005-09-14 5:55 ` Chris Markle
2005-09-14 15:29 ` Chris Markle
1 sibling, 0 replies; 8+ messages in thread
From: Chris Markle @ 2005-09-14 5:55 UTC (permalink / raw)
To: Daniel Jacobowitz; +Cc: gdb
Daniel,
> Could you try a gdb CVS snapshot (6.3.50.*)? If that doesn't work,
> please post /proc/<pid>/maps.
Preliminary tests seem to indicate that this worked. Thx...
Chris
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: gcore command on 6.3 seems to generate smaller core than it should
2005-09-13 13:43 ` Daniel Jacobowitz
2005-09-14 5:55 ` Chris Markle
@ 2005-09-14 15:29 ` Chris Markle
1 sibling, 0 replies; 8+ messages in thread
From: Chris Markle @ 2005-09-14 15:29 UTC (permalink / raw)
To: gdb
Daniel,
> Could you try a gdb CVS snapshot (6.3.50.*)? If that doesn't work,
> please post /proc/<pid>/maps.
We have tested this further and your suggestion (get new snapshot)
definitely worked. Thanks again for your help. Much appreciated...
Chris
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2005-09-14 15:29 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2005-09-13 3:51 gcore command on 6.3 seems to generate smaller core than it should Chris Markle
2005-09-13 3:55 ` Daniel Jacobowitz
2005-09-13 5:58 ` Chris Markle
2005-09-13 12:40 ` Daniel Jacobowitz
2005-09-13 13:26 ` Chris Markle
2005-09-13 13:43 ` Daniel Jacobowitz
2005-09-14 5:55 ` Chris Markle
2005-09-14 15:29 ` Chris Markle
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