VolanoMark is slow over 8 users - JRockit 5.0SP1/Linux ia32
Hello,
Using the VolanoMark benchmark
http://www.volano.com/benchmarks.html
works fine up to 8 users per room (3% CPU idle)
$ java ... COM.volano.Mark -rooms 1 -users 8
but over 8 users, sometime abruptly slows down
(> 90% CPU idle) as if a timeout had been introduced.
Instrumenting the code, it appears that a wait()
that takes usually less that 1 ms, takes now 38 ms.
(in COM.volano.t)
On ia32/Linux, only with JRockit 5.0 (OK with 1.4.2)
# dual Intel PentiumIII
Red Hat Enterprise Linux AS release 3 (Taroon Update 4)
Linux 2.4.21-27.ELsmp
glibc-2.3.2-95.30
java version "1.5.0_02"
Did someone else observe such a behavior ?
Some JRockit options to solve that problem ?
Thanks
Denis
Hi Denis!
You can email the JRA recordings to [email protected] and refer to this thread in the forum.
Thanks,
/Helena
I've collected data for JRA before and after the slowdown
(users=8/9) - the same proportion of Fat locks in
COM.volano.ae (subclass of COM.volano.t calling wait()) ...
but divided by 20 ...
How can I post these files to you ?
Thanks,
Denis
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"theand" <[email protected]> wrote in
message
news:f0db3f$rgk$[email protected]..
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troubleshooting tech
> note
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>
>
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>
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>
>
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>
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>
>
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http://support.apple.com/kb/ts3780
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0%....................................................................................................100%
===== BEGIN DUMP
=============================================================
JRockit dump produced after 0 days, 00:00:00 on Mon Feb 7 13:20:02 2005
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Error code: 52
Error Message: Null pointer exception in native code
Signal info : si_signo=11, si_code=1
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ari-38120-20041118-1131-linux-ia32
Threads / GC : Native Threads, GC strategy: parallel
: mmHeap->data = 0x20000000, mmHeap->top = 0x24000000
Number CPUs : 1
Tot Phys Mem : 526057472
OS version : Red Hat Linux release 9 (Shrike)
Linux version 2.4.20-31.9 (root@websvr12) (gcc version 3.2.2 20030222
(Red Hat Linux 3.2.2-5)) #4 Fri Aug 27 22:59:13 EDT 2004
State : JVM is starting up
Command Line : -Djava.class.path=.
-Djrockit.launcher.type=jrockit.shipment -Djava.io.tmpdir=/tmp -Xmx256m
-Djava.class.path=.:insta
ller.jar:bids.jar:3rdparty.jar:castor-xml_0.9.4.jar:Ostermiller.jar:wlw-plaf.jar:comdev.jar:wizard.jar
-Dsun.java.command=com.bea.pl
ateng.wizard.WizardController -mode=console
Environment : JAVA_HOME=(null),
java.home=/tmp/filephQgJD/jre142_05/jre,
java.class.path=.:installer.jar:bids.jar:3rdparty.jar:cast
or-xml_0.9.4.jar:Ostermiller.jar:wlw-plaf.jar:comdev.jar:wizard.jar,
java.library.path=/tmp/filephQgJD/jre142_05/jre/lib/i386/jrocki
t:/tmp/filephQgJD/jre142_05/jre/lib/i386:/tmp/filephQgJD/jre142_05/jre/../lib/i386
C Heap : Good; no memory allocations have failed
Registers (from context struct at 0x80516bc/0x8051784):
EAX = 00000000 EBX = 4001a740
ECX = 0000000d EDX = 4001a741
ESI = 00000000 EDI = 4027d500
ESP = bfffd850 EIP = 4015c449
EBP = bfffd868 EFL = 00010206
CS = 0023 DS = 002b ES = 002b
SS = 002b FS = 0033 GS = 0033
Stack:
bfffd850 :421328d4 4001a750 00000000 4013e321 00000003 bfffd968
bfffd868 :bfffd8a8 42111654 bfffd880 00000010 00000000 421328d4
bfffd880 :00000000 4001a738 42000034 40130008 00000003 00000004
bfffd898 :421115bd bfffd968 bfffd968 4027d5a8 bfffd8c8 4015c4c1
bfffd8b0 :4015c410 00000000 bfffd8c8 4015c4ad 00000012 0000008d
bfffd8c8 :bfffd938 40127b6b bfffd968 bfffda5c 4027d5a8 4207378d
bfffd8e0 :42133220 00000080 080602e8 00000080 00000000 4027d5a8
bfffd8f8 :bfffd928 4013e279 00000080 00000004 bfffd938 40156cba
bfffd910 :bfffd968 bfffda5c bfffd948 401588ce 4026f6cc 401974cc
bfffd928 :bfffd948 40158927 00000080 00000008 bfffd978 40127d85
bfffd940 :bfffd968 40208c62 bfffd978 40127d66 bfffd9d8 42133268
bfffd958 :00000051 0804f7d0 bfffd9d8 bfffda5c 00000000 00000000
bfffd970 :00000001 00000000 bfffd9a8 40167789 bfffd9d8 00000049
bfffd988 :bfffd9d8 00000035 0804bf30 bfffda5c bfffd9d8 0804ae8e
bfffd9a0 :0804efec 00000000 bfffd9e8 0804ae58 bfffda48 bfffda4c
bfffd9b8 :bfffd9d8 0804b426 0804bf30 bfffda5c bfffda68 00ffda68
bfffd9d0 :0804bf30 bfffda5c 00010002 00000006 0804f790 00000000
bfffd9e8 :bffffa68 08049cf1 bfffda48 bfffda4c bfffda5c 0804efe8
bfffda00 :421328d4 40015020 0804bb70 00000000 00000000 00000000
bfffda18 :bffffa74 bfffea68 bfffda64 bfffda5c bfffda58 bfffda54
bfffda30 :bfffda50 bfffda4c bfffda48 00000000 0804be80 00000000
bfffda48 :00000000 00000000 00000000 bffffcdb 00000001 40167720
bfffda60 :40167500 0804f1b9 706d742f 6c69662f 51687065 2f444a67
bfffda78 :3165726a 305f3234 726a2f35 696c2f65 33692f62 6a2f3638
bfffda90 :6b636f72 6c2f7469 766a6269 6f732e6d 00000000 00000000
bfffdaa8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdac0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdad8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdaf0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdb08 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdb20 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdb38 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdb50 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdb68 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdb80 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdb98 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdbb0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdbc8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdbe0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdbf8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdc10 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdc28 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdc40 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdc58 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdc70 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdc88 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdca0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdcb8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdcd0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdce8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdd00 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdd18 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdd30 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdd48 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdd60 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdd78 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdd90 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdda8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffddc0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffddd8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffddf0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffde08 :00000000 00000000 00000000 00000000 00000000 00000000
bfffde20 :00000000 00000000 00000000 00000000 00000000 00000000
bfffde38 :00000000 00000000 00000000 00000000 00000000 00000000
bfffde50 :00000000 00000000 00000000 00000000 00000000 00000000
bfffde68 :00000000 00000000 00000000 00000000 00000000 00000000
bfffde80 :00000000 00000000 00000000 00000000 00000000 00000000
bfffde98 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdeb0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdec8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdee0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdef8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdf10 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdf28 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdf40 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdf58 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdf70 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdf88 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdfa0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdfb8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdfd0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdfe8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffe000 :00000000 00000000 00000000 00000000 00000000 00000000
bfffe018 :00000000 00000000 00000000 00000000 00000000 00000000
bfffe030 :00000000 00000000 00000000 00000000 00000000 00000000
bfffe048 :00000000 00000000 00000000 00000000 00000000 00000000
Code:
4015c349 :ec81e589 00000110 758b5356 f8c48308 00010068 009d8d00
4015c361 :53ffffff eec856e8 10c483c7 0f75c085 68f8c483 40204d60
4015c379 :8d904deb 83002674 858df8c4 fffffef8 e8046a50 01f7b47f
4015c391 :8510c483 830b74c0 6853fcc4 40204dae 858b25eb fffffef8
4015c3a9 :1374c085 75fff883 fcc4831e 4dc96853 0beb4020 8300768d
4015c3c1 :e068f8c4 5640204d fcaa2ee8 500debff 4e766853 e8564020
4015c3d9 :fffcaa1f fee8a58d 5e5bffff c35dec89 5500768d ec83e589
4015c3f1 :0c558b08 8b084d8b 8b500842 a0685002 5140204e fca9f2e8
4015c409 :5dec89ff 55f689c3 ec83e589 5356570c 6af8c483 08558b2f
4015c421 :5004428b eec726e8 83c389c7 db8510c4 57eb3175 6b084d8b
4015c439 :318b34c6 d500b88d b9fc4027 0000000d 74a1a5f3 8d4026f7
4015c451 :15890150 4026f774 0f02f883 b60fc094 312aebc0 f768bff6
4015c469 :8d904026 8b002674 f8c48307 b4e85350 8301f1ec c08510c4
4015c481 :c783b275 fe834604 31e47e02 e8658dc0 895f5e5b 55c35dec
4015c499 :ec83e589 932de808 f4a301eb e84027d4 01eb9303 27d4f8a3
4015c4b1 :f8c48340 1068006a e84015c4 01fb50ef c35dec89 5500768d
4015c4c9 :ec83e589 5356573c 6afcc483 4edf6804 5d8d4020 dce85310
4015c4e1 :83c7eec5 c08510c4 458b1774 fcc4830c 4ee46850 458b4020
4015c4f9 :fce85008 ebfffca8 dc458d7f 89d84589 fa7d8dc6 0f00768d
4015c511 :685003b6 40204ef7 e856036a 01ef2fbf 8310c483 394302c6
4015c529 :83e47efe b70ff4c4 0f504245 504045b7 3e45b70f 45b70f50
4015c541 :b70f503c 0f503a45 503845b7 5034458b 5030458b 502c458b
Loaded modules:
(* denotes the module causing the exception)
0x08048000-0x0804cd86 /tmp/filephQgJD/jre142_05/bin/java
0x4001b000-0x400251df /lib/tls/libpthread.so.0
0x40029000-0x40049b3f /lib/tls/libm.so.6
0x4004b000-0x4004d1c3 /lib/libdl.so.2
0x42000000-0x4212fbdb /lib/tls/libc.so.6
0x40050000-0x4021f3ef*
/tmp/filephQgJD/jre142_05/jre/lib/i386/jrockit/libjvm.so
0x404b7000-0x404c142b /lib/libnss_files.so.2
Java Thread ID = 0x00000080, lastJavaFrame = 0xfffffffc, Name = Noname
Thread Stack Trace:
at dlIterFindLibcCb+57()@0x4015c449
--- End of stack trace
Additional information is available in:
/tmp/filephQgJD/jrockit.12971.dump
No core file will be created because core dumps have been
disabled. To enable core dumping, try "ulimit -c unlimited"
before starting JRockit again.
Please send the file(s), information about your system
setup and the program you were running to [email protected]. Thank you.
Extended, platform specific info:
libc release: 2.3.2-stable
Elf headers:
libc ehdrs: failed.
libpthread ehdrs: EI: 7f454c46010101000000000000000000 ET: 3 EM: 3 V: 1
ENTRY: 0x00003f70 PHOFF: 0x00000034 SHOFF: 0x000135a8 EF: 0x
0 HS: 52 PS: 32 PHN; 7 SS: 40 SHN: 33 STIDX: 32
libjvm ehdrs: failed.
===== END DUMP
===============================================================
** Error during execution, error code = 6.Hi Allen,
Well, RH9 is not a supported platform and has therefore received very
limited or no testing whatsoever, but JRockit should not crash on it...
To begin with, you can try a manual installation by doing a manual
$unzip <jrockit-installer>.bin
$unzip <jrockit-payload>.zip
to get the files and copy/move them wherever you want them installed.
You can also try different releases of JRockit, such as 1.4.2_04 or the
new 1.5.0 release if they work better.
The dump indicates that there might be a problem with glibc on your
machine. This problem has been observed to be triggered by the installation
and activation of the 'prelink' feature on some distros but can also be
caused
by other things such as an too old version of glibc.
The closest info I can find on supported versions of the kernel and glibc
that
might match RH9 is for JRockit 1.4.2_05 on RHEL3.0-i686 which has
been verified with QU3 with kernel-2.4.21-20 and glibc-2.3.2-95.27.
Regarding prelink, you can check whether prelink is installed by
"rpm -qa | grep prelink", and if it is installed also check the top of
/etc/sysconfig/prelink to see if it is actually enabled or not.
Best Regards
/Robert Ottenhag
Software Engineer, BEA Systems, Inc.
"Allen Hewes" <[email protected]> wrote in message news:4207a053$1@mail...
Hi Robert/Steffan,
I read the thread re: Null pointer exception in native code.
It seems I have the same issue. I can't install the latest jrockit on
RedHat 9. Are these issues the same? Is there a fix coming? I don't know
what 'prelink' is and 'man prelink' produces nothing...
TIA,
-Allen
rpm -qa | grep glibc
glibc-kernheaders-2.4-8.10
glibc-common-2.3.2-27.9.7
glibc-2.3.2-27.9.7
glibc-devel-2.3.2-27.9.7
rpm -q --qf "%{name}-%{version}-%{release} Arch:%{arch}\n" glibc
glibc-2.3.2-27.9.7 Arch:i686
./jrockit-j2sdk1.4.2_05-linux-ia32.bin -mode=console
Extracting
0%..........................................................................
..........................100%
===== BEGIN DUMP
=============================================================
JRockit dump produced after 0 days, 00:00:00 on Mon Feb 7 13:20:02 2005
Additional information is available in:
/tmp/filephQgJD/jrockit.12971.dump
No core file will be created because core dumps have been
disabled. To enable core dumping, try "ulimit -c unlimited"
before starting JRockit again.
Please send the file(s), information about your system
setup and the program you were running to [email protected]. Thank you.
Error code: 52
Error Message: Null pointer exception in native code
Signal info : si_signo=11, si_code=1
Version : BEA WebLogic JRockit(TM) 1.4.2_05 JVM R24.4.0-1
ari-38120-20041118-1131-linux-ia32
Threads / GC : Native Threads, GC strategy: parallel
: mmHeap->data = 0x20000000, mmHeap->top = 0x24000000
Number CPUs : 1
Tot Phys Mem : 526057472
OS version : Red Hat Linux release 9 (Shrike)
Linux version 2.4.20-31.9 (root@websvr12) (gcc version 3.2.2 20030222
(Red Hat Linux 3.2.2-5)) #4 Fri Aug 27 22:59:13 EDT 2004
State : JVM is starting up
Command Line : -Djava.class.path=.
-Djrockit.launcher.type=jrockit.shipment -Djava.io.tmpdir=/tmp -Xmx256m
-Djava.class.path=.:insta
ller.jar:bids.jar:3rdparty.jar:castor-xml_0.9.4.jar:Ostermiller.jar:wlw-plaf
.jar:comdev.jar:wizard.jar
-Dsun.java.command=com.bea.pl
ateng.wizard.WizardController -mode=console
Environment : JAVA_HOME=(null),
java.home=/tmp/filephQgJD/jre142_05/jre,
java.class.path=.:installer.jar:bids.jar:3rdparty.jar:cast
or-xml_0.9.4.jar:Ostermiller.jar:wlw-plaf.jar:comdev.jar:wizard.jar,
java.library.path=/tmp/filephQgJD/jre142_05/jre/lib/i386/jrocki
t:/tmp/filephQgJD/jre142_05/jre/lib/i386:/tmp/filephQgJD/jre142_05/jre/../li
b/i386
C Heap : Good; no memory allocations have failed
Registers (from context struct at 0x80516bc/0x8051784):
EAX = 00000000 EBX = 4001a740
ECX = 0000000d EDX = 4001a741
ESI = 00000000 EDI = 4027d500
ESP = bfffd850 EIP = 4015c449
EBP = bfffd868 EFL = 00010206
CS = 0023 DS = 002b ES = 002b
SS = 002b FS = 0033 GS = 0033
Stack:
bfffd850 :421328d4 4001a750 00000000 4013e321 00000003 bfffd968
bfffd868 :bfffd8a8 42111654 bfffd880 00000010 00000000 421328d4
bfffd880 :00000000 4001a738 42000034 40130008 00000003 00000004
bfffd898 :421115bd bfffd968 bfffd968 4027d5a8 bfffd8c8 4015c4c1
bfffd8b0 :4015c410 00000000 bfffd8c8 4015c4ad 00000012 0000008d
bfffd8c8 :bfffd938 40127b6b bfffd968 bfffda5c 4027d5a8 4207378d
bfffd8e0 :42133220 00000080 080602e8 00000080 00000000 4027d5a8
bfffd8f8 :bfffd928 4013e279 00000080 00000004 bfffd938 40156cba
bfffd910 :bfffd968 bfffda5c bfffd948 401588ce 4026f6cc 401974cc
bfffd928 :bfffd948 40158927 00000080 00000008 bfffd978 40127d85
bfffd940 :bfffd968 40208c62 bfffd978 40127d66 bfffd9d8 42133268
bfffd958 :00000051 0804f7d0 bfffd9d8 bfffda5c 00000000 00000000
bfffd970 :00000001 00000000 bfffd9a8 40167789 bfffd9d8 00000049
bfffd988 :bfffd9d8 00000035 0804bf30 bfffda5c bfffd9d8 0804ae8e
bfffd9a0 :0804efec 00000000 bfffd9e8 0804ae58 bfffda48 bfffda4c
bfffd9b8 :bfffd9d8 0804b426 0804bf30 bfffda5c bfffda68 00ffda68
bfffd9d0 :0804bf30 bfffda5c 00010002 00000006 0804f790 00000000
bfffd9e8 :bffffa68 08049cf1 bfffda48 bfffda4c bfffda5c 0804efe8
bfffda00 :421328d4 40015020 0804bb70 00000000 00000000 00000000
bfffda18 :bffffa74 bfffea68 bfffda64 bfffda5c bfffda58 bfffda54
bfffda30 :bfffda50 bfffda4c bfffda48 00000000 0804be80 00000000
bfffda48 :00000000 00000000 00000000 bffffcdb 00000001 40167720
bfffda60 :40167500 0804f1b9 706d742f 6c69662f 51687065 2f444a67
bfffda78 :3165726a 305f3234 726a2f35 696c2f65 33692f62 6a2f3638
bfffda90 :6b636f72 6c2f7469 766a6269 6f732e6d 00000000 00000000
bfffdaa8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdac0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdad8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdaf0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdb08 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdb20 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdb38 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdb50 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdb68 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdb80 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdb98 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdbb0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdbc8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdbe0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdbf8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdc10 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdc28 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdc40 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdc58 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdc70 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdc88 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdca0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdcb8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdcd0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdce8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdd00 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdd18 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdd30 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdd48 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdd60 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdd78 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdd90 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdda8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffddc0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffddd8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffddf0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffde08 :00000000 00000000 00000000 00000000 00000000 00000000
bfffde20 :00000000 00000000 00000000 00000000 00000000 00000000
bfffde38 :00000000 00000000 00000000 00000000 00000000 00000000
bfffde50 :00000000 00000000 00000000 00000000 00000000 00000000
bfffde68 :00000000 00000000 00000000 00000000 00000000 00000000
bfffde80 :00000000 00000000 00000000 00000000 00000000 00000000
bfffde98 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdeb0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdec8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdee0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdef8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdf10 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdf28 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdf40 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdf58 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdf70 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdf88 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdfa0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdfb8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdfd0 :00000000 00000000 00000000 00000000 00000000 00000000
bfffdfe8 :00000000 00000000 00000000 00000000 00000000 00000000
bfffe000 :00000000 00000000 00000000 00000000 00000000 00000000
bfffe018 :00000000 00000000 00000000 00000000 00000000 00000000
bfffe030 :00000000 00000000 00000000 00000000 00000000 00000000
bfffe048 :00000000 00000000 00000000 00000000 00000000 00000000
Code:
4015c349 :ec81e589 00000110 758b5356 f8c48308 00010068 009d8d00
4015c361 :53ffffff eec856e8 10c483c7 0f75c085 68f8c483 40204d60
4015c379 :8d904deb 83002674 858df8c4 fffffef8 e8046a50 01f7b47f
4015c391 :8510c483 830b74c0 6853fcc4 40204dae 858b25eb fffffef8
4015c3a9 :1374c085 75fff883 fcc4831e 4dc96853 0beb4020 8300768d
4015c3c1 :e068f8c4 5640204d fcaa2ee8 500debff 4e766853 e8564020
4015c3d9 :fffcaa1f fee8a58d 5e5bffff c35dec89 5500768d ec83e589
4015c3f1 :0c558b08 8b084d8b 8b500842 a0685002 5140204e fca9f2e8
4015c409 :5dec89ff 55f689c3 ec83e589 5356570c 6af8c483 08558b2f
4015c421 :5004428b eec726e8 83c389c7 db8510c4 57eb3175 6b084d8b
4015c439 :318b34c6 d500b88d b9fc4027 0000000d 74a1a5f3 8d4026f7
4015c451 :15890150 4026f774 0f02f883 b60fc094 312aebc0 f768bff6
4015c469 :8d904026 8b002674 f8c48307 b4e85350 8301f1ec c08510c4
4015c481 :c783b275 fe834604 31e47e02 e8658dc0 895f5e5b 55c35dec
4015c499 :ec83e589 932de808 f4a301eb e84027d4 01eb9303 27d4f8a3
4015c4b1 :f8c48340 1068006a e84015c4 01fb50ef c35dec89 5500768d
4015c4c9 :ec83e589 5356573c 6afcc483 4edf6804 5d8d4020 dce85310
4015c4e1 :83c7eec5 c08510c4 458b1774 fcc4830c 4ee46850 458b4020
4015c4f9 :fce85008 ebfffca8 dc458d7f 89d84589 fa7d8dc6 0f00768d
4015c511 :685003b6 40204ef7 e856036a 01ef2fbf 8310c483 394302c6
4015c529 :83e47efe b70ff4c4 0f504245 504045b7 3e45b70f 45b70f50
4015c541 :b70f503c 0f503a45 503845b7 5034458b 5030458b 502c458b
Loaded modules:
(* denotes the module causing the exception)
0x08048000-0x0804cd86 /tmp/filephQgJD/jre142_05/bin/java
0x4001b000-0x400251df /lib/tls/libpthread.so.0
0x40029000-0x40049b3f /lib/tls/libm.so.6
0x4004b000-0x4004d1c3 /lib/libdl.so.2
0x42000000-0x4212fbdb /lib/tls/libc.so.6
0x40050000-0x4021f3ef*
/tmp/filephQgJD/jre142_05/jre/lib/i386/jrockit/libjvm.so
0x404b7000-0x404c142b /lib/libnss_files.so.2
Java Thread ID = 0x00000080, lastJavaFrame = 0xfffffffc, Name = Noname
Thread Stack Trace:
at dlIterFindLibcCb+57()@0x4015c449
--- End of stack trace
Additional information is available in:
/tmp/filephQgJD/jrockit.12971.dump
No core file will be created because core dumps have been
disabled. To enable core dumping, try "ulimit -c unlimited"
before starting JRockit again.
Please send the file(s), information about your system
setup and the program you were running to [email protected]. Thank you.
Extended, platform specific info:
libc release: 2.3.2-stable
Elf headers:
libc ehdrs: failed.
libpthread ehdrs: EI: 7f454c46010101000000000000000000 ET: 3 EM: 3 V: 1
ENTRY: 0x00003f70 PHOFF: 0x00000034 SHOFF: 0x000135a8 EF: 0x
0 HS: 52 PS: 32 PHN; 7 SS: 40 SHN: 33 STIDX: 32
libjvm ehdrs: failed.
===== END DUMP
===============================================================
** Error during execution, error code = 6. -
Create dummy user like oracle on linux OS?
Hi All,
Is it possible to take export import to the Oracle DB/Schema/Table from other linux user?
i have plan to create dummy user like oracle on Linux box, so developer will use this dummy user and logging to oracle BOX and take the dump.
I have created one user "TEST" in linux OS.
but what is the next?
what priviledge is requred or take dump from other linux user?
oracle:x:501:502::/home/oracle:/bin/bash
test:x:502:504::/home/test:/bin/bashRK wrote:
Hi All,
Is it possible to take export import to the Oracle DB/Schema/Table from other linux user?
i have plan to create dummy user like oracle on Linux box, so developer will use this dummy user and logging to oracle BOX and take the dump.
I have created one user "TEST" in linux OS.
but what is the next?
what priviledge is requred or take dump from other linux user?
oracle:x:501:502::/home/oracle:/bin/bash
test:x:502:504::/home/test:/bin/bash
Why do you think you need to create a 'dummy' OS account? export and import a simply client applications. They connect to the database using normal database account credentials. The OS account has nothing to do with it. The developers don't even need an OS account at all, as they can run imp from their oracle client-enabled desktops. -
I'm using sqlsrv (php_pdo_sqlsrv_55_ts.dll and php_sqlsrv_55_ts.dll) in PHP (5.5.12, CLI version on Windows 8.1) to connect to a SQL Server 2012 over a VPN tunnel. But the transfer rate for large result sets is very slow.
Testing SSMS on the same PC over the same VPN tunnel for this query (query is just for testing purposes, I also tried other queries with large data sets and all showed the same performance issues):
SELECT *
FROM [Data].[dbo].[Logins]
WHERE date >= '2014-01-27 00:00:00.000' AND date < '2014-01-29 00:00:00.000'
returns about 100,000 rows in 4 seconds. Checking the transfer rate on my firewall/VPN shows 2,500 KB/s (on a 100mbit network) while the query is running.
Using PHP:
sqlsrv_configure('ClientBufferMaxKBSize', 1024*1024);
$dbconnect = "SERVER\\HERE";
$dbconinfo = array("UID" => "user", "PWD" => "pass", "Database" => "Data")
$conn = sqlsrv_connect( $dbconnect, $dbconinfo);
$sql = "
SELECT *
FROM [dbo].[Logins]
WHERE date >= '2014-01-27 00:00:00.000' AND date < '2014-01-29 00:00:00.000'
$options = array();
$options["Scrollable"] = SQLSRV_CURSOR_CLIENT_BUFFERED;
$options["QueryTimeout"] = 30000;
$stmt = sqlsrv_query( $conn, $sql, array(), $options);
runs 40 seconds and the firewall/VPN shows less than 150 KB/s while the query is running. Task-Manager shows around 5% CPU load for the script.
I used SQLSRV_CURSOR_CLIENT_BUFFERED just for testing, because it reads the result in its own buffer without any further PHP code. Fetching each set of data without buffering is just a little bit slower (around 45 seconds).
I also tried a PDO version which lead to the same result.
ConnectionPooling 0 or 1 didn't make any difference either.
Changing server name to DNS vs. IP adress also made no difference.
LogSubsystems -1 and LogSeverity -1 did not show any issues or anything helpful at all.
I even used Wireshark to watch the network traffic but couldn't find any big differences between PHP and SSMS versions. But I don't know too much about networking layers.
So the CPU load is low, there is no HDD use at all, the network transfer rate is extremely slow and the SQL server would be capable to deliver the results very much faster. And it actually is a lot faster with SSMS on the same PC and network connection.
Why is sqlsrv so very slow?
Any ideas what might be the issue or what I could try to speed up PHP/sqlsrv would be greatly appreciated.Please tell us what are waits assigned to query, you can use below tsql code to get the information.
select session_id, t.text, start_time, status, command, db_name(database_id) As DBname, USER_NAME(user_id) As UserName, blocking_session_id, wait_type, wait_time, wait_resource, percent_complete from sys.dm_exec_requests
CROSS APPLY sys.dm_exec_sql_text(sql_handle) as t
This information can help us to understand the problem.
Thanks,
Shashikant
Sadly I don't have the rights on the SQL Server for this query. But from what I gathered from similar issues on the web, SQL Server is most likely waiting for the client.
I also tried the same testing query now with Power Query in Excel. It's as fast as with SSMS. Just with sqlsrv on PHP it's extremly slow.
Testing the query on a local SQL Server, it's pretty much instantaneous with SSMS, Excel and sqlsrv on PHP as well.
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