similar to: RMI /Java /Jini

Hi all i want to view the stack trace of the real time java application using DTrace probes. i am using jrts provider for finding the information of real time threads. In this i have used the ustack(), jstack() and this gives the following type of information libjvm.so`__1cJJavaCallsMcall_virtual6FpnJJavaValue_nGHandle_nLKlassHandle_nMsymbolHandle_5pnGThread__v_+0x5e

Hi, I would like to use dtrace to observe some behaviour in my J2EE app running in JBoss. I start JBoss normally in a 1.6 VM. When I try to enable set the ExtendedDTraceProbes flag using jinfo, I get a thread dump in the JBoss console and the message: "Unable to open door: target process not responding or HotSpot VM not loaded" in the jinfo console. I have tried this with both

Hi, I have used dtrace in the past for diagnosing IO/filesystem related issues. So I am a bit familiar with dtrace scripts Now I want to diagnose performance problems in the java area. May be memory leak etc. The hotspot provider is not present. How can I get them? Does someone have any further advice? regards Hans -- This message posted from opensolaris.org

hello, i have run around 65000 regressions and stored them in a list. then i stored the session with save.image on my hard disk. the file is almost 1GB. when i now want to load the image it took tons of time. even after 12h of loading it was not done, although the saving was done fairly fast. i fear i have to run the regressions again and store them in a database ... can i load this file?

> > From: vikram b > > Date: October 22, 2009 12:31:53 AM PDT > > To: dtrace-discuss at opensolaris.org > > Subject: [dtrace-discuss] dtrace problem > > > > Hi All, > > I am running dtrace on linux !! got it working some how. > > dtrace -l shows a big list.. but many issues > > > > 1. says : failed to grab process > >

Hey, Do you guys think that is a good idea to have a manual page for each provider with a complete description of what probes are offered ? Found some already under 7D category: dtrace dtrace (7d) - DTrace dynamic tracing facility fasttrap fasttrap (7d) - DTrace user instruction tracing provider fbt fbt (7d) - DTrace function boundary tracing provider

Have you considered the mdb dcmd ::pfiles? mfe at inker:~/Code/dtrace/examples$ *pfexec mdb -k* Loading modules: [ unix genunix specfs dtrace mac cpu.generic uppc pcplusmp scsi_vhci zfs ip hook neti sockfs arp usba uhci fctl s1394 stmf stmf_sbd md lofs random idm sd crypto fcp cpc fcip smbsrv nfs ufs logindmux ptm nsmb sppp nsctl sdbc rdc sv ii ipc ] > *::ps ! grep clock-applet* R 1744

X.Org has adopted GNU autoconf as its build configuration mechanism, so when I integrated the dtrace probes, I checked to see if they should be built using this test, checking for the existence of a program named "dtrace" in the path: dnl Check for dtrace program (needed to build Xserver dtrace probes) AC_ARG_WITH(dtrace, AS_HELP_STRING([--with-dtrace=PATH], [Enable dtrace

I have inserted some probes in my application, and it works great in the "debug build" I have been using. So I wanted to look at the "overhead" introduced by inactive dtrace probes in my application. I am using the Sun Studio 11 compiler, so I added the following options: -xO5 -g0 -xbuiltin But this breaks the linking of my application. Undefined first

(Apologies to anyone who follows me on Twitter and therefore will have seen this multiple times already.) Joyent will be offering training in DTrace: Core Features and Performance Analysis trainer: Brendan Gregg <http://dtrace.org/blogs/brendan/> (San Francisco, Sept 6-7), Max Bruning <http://wiki.smartos.org/display/DOC/Max+Bruning> (Geneva, Sept 13-14) This course introduces

I am out of the office until 01/28/2013. Hi, Thanks for your email. I am on leave on 14th Jan''13, will have no access to email. For Patching Related Queries, Please reach out to "raveepan at in.ibm.com" For BAU Related Queries, Please reach out to "pradeepssingh at in.ibm.com/usha.rani at in.ibm.com" For ASDP Related Queries, Please reach out to "subrahmaniam

Hi, Question for the Apple team I guess... Do Apple have any plans to ship the DTrace Java API anytime? Just to be clear, I''m referring to the code under: http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libdtrace_jni Thanks. Jon.

Just adding a few more details to the previous mail so that I can avoid some trouble for you folks. 1. I have done a /execname != "dtrace"/ to avoid dtrace itself causing more syscalls to be fired. 2. I have also supressed the printing on the terminal which makes dtrace slower. And what happens is this: dtrace -qn ''syscall::read:entry /execname != "dtrace"/ {

Dear dtrace Experts, I have seen some dtrace utilities like opensnoop and execsnoop etc. My interest is to write a simple script that can snoop the files which uses the 3 syscalls like open,create,unlink. I have gone through dtrace oneliners that can do the same : dtrace -n ''syscall::open*:entry { printf("%s %s",execname,copyinstr(arg0));}'' dtrace -n

Hello Srikant - A quantization distributes the results of your aggregation into ranges ordered by a power-of-two. Presumably what you''d do in your script is capture the inclusive elapsed time of each function call in your library, then use this quantization to see how tightly-banded the times are. Perhaps there''s some blocking I/O in some of your calls, for example, in which

The earlier post with the Dtrace probes definition (sent on April 23) was only to solicit feedback from all prospective users of iSCSI DTrace probes. I will follow up shortly with an updated document requesting approval from the community. thanks Priya -------- Original Message -------- Subject: Dtrace provider for the COMSTAR iscsi Target Port Provider - Review Request Date: Thu, 23 Apr

Hi, If you have a custom kernel (and therefore have duplicates of everything in /kernel in your custom kernel) and have noticed that when you try to use anonymous tracing, dtrace adds multiple copies of the forceload directives to /etc/system, e.g.: * vvvv Added by DTrace * * The following forceload directives were added by dtrace(1M) to allow for * tracing during boot. If these

Hi All, One of the customer is seeing the following error messages. He is using a S10U1 system with all latest patches. Dtrace script is attached. I am not seeing these error messages on S10U2 system. What could be the problem? Thanks, Gangadhar. ------------------------------------------------------------------------ rroberto at njengsunu60-2:~$ dtrace -AFs /lib/svc/share/kcfd.d dtrace:

To remember all dtrace actions, aggregations and variables is a headache, even worse, they are not include in dtrace(1M) now. So here is a chance to have a CLI RFE - to have something like "dtrace --actions", which will list all actions, like this page: http://developers.sun.com/solaris/articles/dtrace_quickref/dtrace_functions.html "dtrace --aggregations", lists all

Dtrace does work on some workstation, such as as follows, ----------------------------------------------------------- bash-3.00# dtrace -s ./mem.d `pgrep test` dtrace: script ''./mem.d'' matched 5 probes ^C bash-3.00# uname -a SunOS ftp 5.10 Generic_118833-17 sun4u sparc SUNW,Sun-Blade-100 bash-3.00# dtrace -V dtrace: Sun D 1.1