similar to: Asynchronous signal handling in fasttrap provider

I would like to know how to get access to errno when using pid provider to probe calls to libc functions like fopen(). The built-in errno appears to be only for system calls. What I''d like to be able to do is investigate where in an application I''m encountering EMFILE and what the stack looks like at the time. This message posted from opensolaris.org

This came up as an RFE during the conference (I believe it''s been logged as "4012008: brendan() action needed for DTrace Toolkit".) As everyone here is aware, DTrace is not quite as user friendly as it could be. For the uninitiated, it can be confusing to run a DTrace script and not see the expected output. Brendan Gregg has addressed this in the DTrace Toolkit[1] by

Just to let people know what my big picture is, I''m trying to write a script that will let me run a program, and name a progeny of that program that I want to debug. My script should find the first occurrence of that progeny, and run it until it finishes initializing the runtime linker, but stop it before it runs any shared library startup routines. (Failing that, I''d be okay

I have a number of systems running solaris10 and i see the package and binary for dtrace installed however whenever we try to run anything we get this error dtrace: failed to initialize dtrace: DTrace device not available on system the only system in which i dont have this error is the development server that has the full solaris 10 install while others are minimized, do i need additional

Hi, I''m trying to trace the io of a given file, but I have a feeling that it''s been done via a script, as such I''d like to be able to tell the names of the calling processe tree, similar to what ptree produces. Is there any way to get this information without running ptree using system()? Thanks, Darren.

HI there, I?ve discovered DTrace few days ago and I?m currently stuck on a cpu stats problem. I?m trying to poll the cpu_t.cpu_acct[] array to pull idle, system and user values. So, I made this little script: ------------------------------------------------------------------------------------------------------ #!/usr/sbin/dtrace -s #pragma D option quiet this uint64_t start; this hrtime_t

I''m interested in monitoring the amount of stack used by a multi-threaded program. I assume ''stackdepth'' built-in would be useful...but not sure. Been through demo''s, ToolKit, and internals..but it''s just not clicking for me yet. Not sure how to measure start/end of stack size dynamically...Anyone know how to break this down? This message posted from

Hi all, I am trying to write a D script which would print ustack() for every program in the system receiving SIGSEGV. All the stacks printed in trap()/sigtoproc() context do not have meaningful symbols. The following solves the problem to some degree but I''d much rather have a self-contained D script. dtrace -w -n ''fbt:genunix:sigtoproc:entry/arg2 == 11/ {

Hi, I''m posting a question hoping someone will know the answer off hand thereby reducing my search time. :-) With USDT probes, the tracepoint is only installed by libdtrace itself, never by the drti ioctl. So whenever I run a program with an USDT probe, no tracepoint is installed. Only after I run the dtrace command the tracepoint is actually installed on the victim process. My question

Is there a limit on the number of user space probes that can be present at any time? I have compiled very many probes into our product, and can''t see all of them in "dtrace -l". it looks very much like I have all of them up to some point at which I''ve hit some hard limit. I can see a total of 8588 probes, I think 2 processes have all of the ones I expect (one has 1752

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

Hi all, So I just took Sun''s dtrace class this week and one thing that piqued my interest was the instrumenting of a process''s instructions and how to find the original instructions. (I''m looking around at resources for learning SPARC assembly to help me when using mdb for analysis, though I vaguely remember pieces from a grad school compiler theory class about 10 years

What am I missing? [Download dvm.zip from https://solaris10-dtrace-vm-agents.dev.java.net/] [root at load0 /]$ mkdir /opt/dvm;cd /opt/dvm root at load0 dvm]$ unzip /home/jbuckley/dvm.zip [jbuckley at load0 ~]$ more /etc/release Solaris Nevada snv_45 SPARC Copyright 2006 Sun Microsystems, Inc. All Rights Reserved. Use is subject to

How do I query an application to see if it supports any USDT probe points?

Hi, I''m working on some performance analysis with our database and it seems that when the file system (UFS) is mounted with forcedirectio, the IO probe are not triggered when an I/O event occurs. Could you confirm that ? If so, why ? Seb -- This message posted from opensolaris.org

Hi All, I''ve got a problem when I have USDT probes in a static library and in the application code outside of the library. I build the static library containing some USDT probes, glomming everything together (ld -r) before creating the .a file to preserve the probe symbols. This all works fine. I build an application which also has some USDT probes. When I build the application which

Hi: I''m running Indiana (OpenSolaris developer preview) under parallels in OS X 10.5.1. I can consistently get Solaris to hang. Doing a dtrace -n pid\$target::malloc:entry''{@=count()}'' -c ls will consistently hang Solaris. Basically doing anything with PID provider with the -c option seems to hangs Solaris. Only way to recover is to stop and start Parallels desktop.

Hi All, Can I get Dtrace command, which is useful for regular system administration like performance issue. Advance Thanks Muthu -- This message posted from opensolaris.org

Using the following dtrace command, I can see who''s calling what with lots of +/- numbers: dtrace -n ''fbt:ip:ip_output:entry{@dbtypes[((mblk_t *)arg1)->b_datap->db_type,caller] = count();}'' ...the output is what I want but not how I want to see it. What I''d rather see is the function names associated with caller and for db_type to be output in hex.

I''m trying to install CiscoWorks 2.5 on Solaris 10 update 1, and after the install when I try to start the daemon, it errors: # /opt/CSCOpx/objects/dmgt/dmgtd.sol ERROR: open file dmgtd failedERROR >>>>>>>>>>>>> open msg catalog failed. NLSPATH incorrect or objects/share/nls/C/dmgtd.cat is missing. # echo $NLSPATH