similar to: dtrace on a kernel module _init()

Hi Nils, all, I tried the ''FBT-trick'' suggested below by Nils and (of course :-) ) it works and gives me a pile of output. Good enough to show that indeed Linux application behavior is not totally opaque, good enough to for instance show that ''system call mapping'' is taking place. I wonder, is there any documentation available for lxsyscall module ? To learn

i am doing reads and writes to /dev/rdsk/c0t2d0s4 using dtrace to see how much time it took for ssdread and ssdwrite. It shows very small number 4 or 5. #pragma D option flowindent syscall::pread:entry { self->trace = 1; self->size = arg2; } syscall::pwrite:entry { self->trace = 1; self->size = arg2; } fbt:ssd:ssdread:entry /self->trace/ { self->start = timestamp;

If I use a simple dtrace script such as this: fbt::somefunc:entry{self->trace=1;} fbt::somefunc:return{self->trace=0;} fbt:::entry{} fbt:::return{printf("%lx", arg1);} then it will descend to whatever depth is necessary If I want to limit it to say 3 functions deep, how can I do that? The quick answer I want to use is to do "self->depth++" on each entry and then

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

Hello all, I saw this question about a year back in the archive[1], but with no final answer. I would like to trace shmget calls and also get the id of the shared memory segment. That script looked like[2], but we dont get the id since arg1 is the errno value. How do i access the shm id, i would need this to debug a customer problem but i don''t have time to learn it the hard

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 am trying to trace some functions that are executed at detach time, and it seems that just having dtrace around to instrument the module is causing a short circuit, whereas modunload will return (device busy). I understand that this makes sense, but how can I get around this if I want to trace stuff at detach time? Thanks, --S

G''Day Folks, Well, I had a weekend home in Sydney while inbetween flights and have knocked out a few programs. (I''ve been programming for 23 hours straight, so if there is something really dumb in one my scripts then please excuse me :) # socketsnoop.d UID PID DIR SIZE CMD 0 19886 W 64 ssh mars 0 19886 R 80 ssh mars 0 19915 W 0

Hi all, I have questions about something I observed just now: 1) on AMD64, S10u1: # dtrace -n ''fbt::copystr:entry{printf ("%p\n", args[0]);}'' -c /bin/pwd dtrace: invalid probe specifier fbt::copystr:entry{printf ("%p\n", args[0]);}: in action list: index 0 is out of range for fbt::copystr:entry args[ ] but # dtrace -n ''fbt::copystr:entry{printf

Author: bmc Repository: /hg/zfs-crypto/gate Revision: 213bfe03af413cdf71c523fb076aaa65a6306a7e Log message: 6256581 System got a hang or a panic with dtrace+kmdb 6264573 unanchored dtrace_getpcstack is rather imprecise toward function end 6289517 dtrace doesn''t like fd_intr anymore 6291378 dtrace helpers can interfere with the use of kmdb 6295554 dtrace doesn''t report

Whilst trying out some D to get an insight into what is the most common reason for a given function to return, I have bumped into an error I don''t understand. The first take on what I was trying to do was: # dtrace -n ''fbt:ip:ip_input:return{@home[arg0] = count();}'' and all was well. The next step was: # dtrace -n

Is it possible to use DTrace to display the number of arguments and their types for userland or kernel functions that are not explicitly instrumented or documented by their authors? We''re talking about functions provided by Veritas VxVM/VxFS and the like, and for example, we might want to try tracing I/Os from App => VxFS => VxVM => ssd driver to see where I/Os get aggregated or

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

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:

OK, I''ve been fritzing around with something I noticed last night, thinking that I understood what was going on, but now it''s getting confusing again. A system that has been running for a couple of months had a hole in the probe ID list near the end in the middle of the fbt probes. And then a couple of syscall probes were stuck in the hole. It looked like this: ... 40311

I''m using DTrace''s anonymous tracing feature to trace through device drivers at boot time. With Solaris 10 Update 6 B5, I was unable to trace fbt based calls from the sd attach point. The error messages from the console are: NOTICE: enabling probe 0 (fbt::sdattach:entry) NOTICE: enabling probe 1 (fbt:::) NOTICE: enabling probe 2 (fbt::sdattach:return) NOTICE: enabling probe

Is there a list anywhere of the DTrace FBT provider calls for each version of Solaris since the Nevada build that hosed the DTrace Toolkit. I have no issue with rewriting what I need, but I am hoping to stave off having to look at all the source code to find everything. I know there is a new provider under development, but I need to be able to program DTrace routines for all the updates in

Tried to start up tcptop_snv on snv87 x86 and got <i>dtrace: failed to compile script /dev/fd/11: line 168: conn_tcp is not a member of struct conn_s</i> Line 288 has this line: <i>this->tcpp = (tcp_t *)this->connp->conn_tcp;</i> which, after looking at line 168 of <a

We cannot run the zilstat utility (from http://www.richardelling.com/Home/scripts-and-programs-1/zilstat) on an Solaris 10 u9 / x86 installed according SUNWCreq (which is a core install) while it works fine on a similar config but installed with all packages (SUNWCXall) So we know it works in this environment but it seems we miss an essential package here. That causes the dtrace: failed to

Hi, Following "anonymous tracing" chapter, I wanna trace kmem_init(), but after reboot, I can''t get anything, why? Here is my short script kmem_init.d: #!/usr/sbin/dtrace -s fbt::kmem_init:entry { stack(); } then I just use: #dtrace -AFs kmem_init.d #reboot #dtrace -ae < got nothing here> Thanks, -Alex This message posted from opensolaris.org