similar to: variable size limit & documentation

I read some of the previous posts on this forum, which discussed this particular problem. I tried to use the solution that those posts suggested, but I am still having a problem with my dtrace application running on a heavily loaded system. I have the following lines in my D script, #pragma D option aggsize=8m #pragma D option bufsize=16m #pragma D option dynvarsize=16m #pragma D option aggrate=0

while trying to use the USDT made available to us in Postgresql database I have problems enabling them. On my database server I ran 1024+ PG processes (1024 clients). The server is a 8 core T2000 @1000MHz. 32GB. 7 storage arrays. Solaris 10 Update 4. Home compiled PG 8.3 beta 1 (optimized binary for T1 chip) with DTrace probes enabled. When running without enabling the probes I have approx 25%

I''m trying to time a function within Firefoxwith a pid$target probe [2]. e.g dtrace -Zqw -x dynvarsize=64m -x evaltime=preinit -p 13954 -s menu- construct.d -s sigcont.d elapsed: 12.7942481ms cpu : 7.7911194ms count : 40 times I''m also measuring Firefox startup time by running it arguments like this: ... file:///Users/joelr/work/mozilla/startup/startup.html#`python

Suppose I have a USDT probe in Firefox and that I''m trying to catch the startup with a probe like this: proc:::exec-success /execname == "firefox-bin"/ { start = timestamp; } and stop tracing when Firefox hits this USDT probe: mozilla:::main-entry { exit(0); } How do I put the running firefox-bin into "trace mode" so that my USDT probe fires? Thanks, Joel

Hi, Has something related to speculative tracing changed between s10 FCS and the more recent nevada builds ? I was trying the specopen.d script from the Dtrace guide on a nevada machine and it failed with : dtrace: failed to enable ''./spec.d'': DIF program content is invalid To try and narrow things down a bit I wrote the following short script. This works fine on s10, but

I am teaching a DTrace class and a student noticed that 2 iosnoop scripts run in two different windows were producing different results. I was not able to answer why this is. Can anyone explain this. Here are the reults from the two windows: # io.d ... sched 0 <none> 1024 dad1 W 0.156 bash 1998

Hi Folks, I''m trying to get to grips with dapptrace, running it on my Mac. Everything seems pretty straightforward, except for - of course - what I''m trying to do. I want to focus in on my code but I can''t seem to be able to output just the functions I want, i.e. user functions. The -U option gives everything. Too much of course. Leaving that blank means the

G''Day Folks, I''ve found another use of dtrace, this makes your console keyboard sound like a typewriter. http://www.brendangregg.com/DTrace/typewriter-0.70.tar.gz I''ve only tested it on an UltraSPARC 5 and a Pentium laptop so far, more to follow. Ok, sorry, not actually a practical use of DTrace. :) Enjoy! Brendan [Sydney, Australia]

What''s going on? # dtrace -s iotime_all.d 100 dtrace: failed to enable ''iotime_all.d'': DIF program content is invalid The errant script.... #pragma D option quiet BEGIN { stime = timestamp; io_count = 0; } io:::start /args[2]->fi_pathname != "<none>"/ { start[pid, args[2]->fi_pathname, args[0]->b_edev, args[0]->b_blkno,

Hi, In Solairs Dtrace User Guide, page 193, it lists the arguments of ERROR probe. One of these arguments is arg3, it is explained as "The DIF offset into that action or -1 if not applicable". Then what does the abbr. DIF mean? Regards TJ

Has anyone seen the following error before? "error on enabled probe ID 2 (ID 473: sdt:unix:av_dispatch_autovect:interrupt-complete): invalid address (0x198) in action #3 at DIF offset 20" I''m trying to capture interrupt times as inlined in the below script. The script gives me some output after the errors, and I''m trying to understand if the errors are affecting

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

Mac OS X 10.14.2 VirtualBox 5.2.22 and 6.0.0 libvirt installed via homebrew virsh -V Virsh command line tool of libvirt 4.10.0 See web site at https://libvirt.org/ Compiled with support for: Hypervisors: QEMU/KVM VMware VirtualBox ESX Test Networking: Remote Bridging Storage: Dir Miscellaneous: Daemon Secrets Debug brew services start libvirt virsh -c vbox:///session list error:

N_conreq:entry { self->x=1; calledaddr=(struct xaddrf *)arg3; callingaddr=(struct xaddrf *)arg4; trace(calledaddr->link_id); tracemem(calledaddr->DTE_MAC.lsap_add, 80); trace(callingaddr->link_id); tracemem(callingaddr->DTE_MAC.lsap_add, 80); } 0 -> N_conreq 255

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

Hi, I ran a d-program with syscall::open:entry probe but got the following error messages sometimes: dtrace: error on enabled probe ID 1 (ID 14: syscall::open:entry): invalid address (0xff34e000) in predicate at DIF offset 76 dtrace: error on enabled probe ID 6 (ID 14: syscall::open:entry): invalid address (0xff34e000) in predicate at DIF offset 28 I don''t know how to interpret these

Guys, sorry for the reposting, but I''ve got some of suggestions in private all of them assuming that I was talking about general purpose C++ programming. This is all within the DTrace framework, and it still seems to be a problem for me. I can combat it with increasing the dynvarsize but that doesn''t seem to be too attractive. Any hints will be highly appreciated. Thanks,

The following script is used as a first attempt to discover IO patterns in a dbase setup: #------------------------------------------------------------------ #pragma D option dynvarsize=128m dtrace:::BEGIN { } pid$target::kaio:entry { self->doit = 1; } pid$target::_aiodone:return { self->doit = 0; } io:::start /self->doit || execname == "oracle"/ {

I have a large (88-drive) zpool in which a drive was recently replaced. (The pool has a bunch of duff Toshiba MK2001TRKB drives -- never ever pay money for these! -- and I'm trying to replace them one by one before they fail completely.) The resilver on the first drive replacement has been taking much much too long, and currently it's stuck in this state: pool: export state: DEGRADED

hi, I''m using the PID provider to trace a 32-bit app, prtdiag. I''m trying to print the value of "propname" (arg1) in the following func: int picl_get_propval_by_name(picl_nodehdl_t nodeh, const char *propname, void *valbuf, size_t nbytes) ... i''ve tried many versions, but this is a representative one: 53 this string propname; 54 55