search for: haslam

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2009 Apr 22
6
PID provider can not create memcpy:return probe for 64bit process
I have found that pid provider can not create memcpy:return probe for 64bit process on snv_110. For example, the pid is 10603, I will have following output for dtrace command: #dtrace -n pid10603:libc.so.1:memcpy:return dtrace: invalid probe specifier pid10603:libc.so.1:memcpy:return: probe description pid10603:libc.so.1:memcpy:return does not match any probes This just
2009 Sep 18
7
Why is plockstat provider only present for 1 process
Hi, I would like to know why dtrace -l |grep plockstat show plockstat28099 lines. Process with pid 28099 is a java process. Why can I not examine other processes with the plockstat provider? Is it a java startup option? Regards Hans -------------- next part -------------- An HTML attachment was scrubbed... URL:
2009 Jan 21
1
Sidebar to Systemtap and Dtrace Comparison
...(small) chance the records are complete enough that dtrace could use the debug records from the system libraries, and in principle any library with the right information available. I *don''t* know whether they are complete enough: that was done after my time in the ABI team. --dave Jon Haslam <Jonathan.Haslam at Sun.COM> wrote: > Yes, having user-land type information would allow you > to do what you want here. As I said, it''s something we know > users would like but it would be a piece of work to implement. "P. Remek" <p.remek1 at googlemail.com&g...
2007 Nov 27
7
Solaris Dynamic Tracing Guide gets Wikified!
Tracers, Good news! The Solaris Dynamic Tracing Guide has entered the participation age at last and has been converted into wiki format. The new and shiny guide can be found at: http://wikis.sun.com/display/DTrace/Documentation The guide has fallen behind with developments in DTrace since it was first released and needs some revising and some bug fixing as well. However, now that it''s
2008 Jul 14
15
CPC provider - input welcome
Tracing Fans, I know it''s been a long time in coming but the CPU Performance Counter (CPC) provider is almost here! The code is currently in for review and a proposed architecture document is attached here for review. Any and all feedback/questions on the proposed implementation is welcome. Thanks. Jon. -------------- next part -------------- An embedded and charset-unspecified text
2008 Nov 23
4
Visualizing a call graph
Hello all, I have been taking basic steps with DTrace and subscribed today to this list. I have written a simple DTrace script to trace all the function entry/exit from a given function: #pragma D option flowindent pid$1::*mysql_select*:entry { self -> start = vtimestamp ; } pid$1::*mysql_select*:return /self -> start/ { self -> start =0 ; } pid$1:::entry, pid$1:::return
2006 Mar 20
0
Code blocks
...is fantastically useful for including prettied codes on my site with no additional work besides copy/pasting the code and defining its language. A few examples, along with the full amended (and somewhat messy) source code for those who are interested, are available from http://www.durham.ac.uk/i.w.haslam/Misc/Notebooks/textile_bc.html Is there interest in this? Would you like me to work this up into something suitable for inclusion in a future release? Any other comments on it? Regards, Iain Haslam. [1] http://blog.thought-mesh.net/mt-static/docs/mtmanual_textile.html#block%20formatting
2008 Nov 08
4
Variable mpid - what is it?
DTraceToolkit has a dtrace script (Proc/pidpersec.d) that refers to a variable mpid as below profile:::tick-1sec { printf("%-22Y %8d %6d\n", walltimestamp, `mpid, pids); pids = 0; } Where is `mpid getting picked from (it isn''t declared anywhere else)? What does the character ` in `mpid signify? I do not see any reference to this variable in the dtrace
2007 Aug 29
6
How do I look up syscall name
I''m using a fbt probe where I get a system call id as an argument, how do I look up the name of it? At the moment I''m post-processing the output using /etc/name/to_sysnum but that doesn''t feel right :) cheers, /Martin -- This message posted from opensolaris.org
2007 Feb 09
3
? has mib:::udp[In/Out]Datagrams been superceded by mib:::udpHC[In/Out]Datagrams
Hi, Looking at some udp stuff on snv_57, and I noticed that mib:::udpInDatagrams no longer exists, has this been superceded by mib:::udpHCInDatagrams? From my understanding they represent the same counter, but I''m asking in case this is a bug. I noticed that there is still a reference to udpInDatagrams in the DTrace testsuite. - Fintan
2009 Feb 16
1
The cpc provider cometh
Hi, Finally, the long promised CPU performance counter provider has arrived into Nevada build 109! For those that need an injection of excitement at the start of the week, you can check out some usage examples on my blog: http://blogs.sun.com/jonh/entry/finally_dtrace_meets_the_cpu Also, you can find a new section for the provider in the DTrace docs:
2006 Jul 18
0
CentOS at LUGradio Live 2006!
...ce Simon Willison - Yahoo! Scott James Remnant - Ubuntu Ted Haeger - Novell Gervase Markham - How to Destroy the Free Software Movemen Bastien Nocera - GNOME development and Fedora Barbie - Messagelabs and Perl Jonathan Riddell - KDE 4 and Kubuntu Dapper Richard Moore - IBM and Open Source Jonathan Haslam - DTrace .... and others. So if you can make it there, get in touch with either Lance ( lance at centos.org ) or me ( kbsingh at centos.org ). look forward to seeing you there. -- Karanbir Singh : http://www.karan.org/ : 2522219 at icq
2006 Jun 25
1
pre, code, ```, and a "bc." marker. Was "Re: shortcut for full url as the linktext?"
On 6/18/06, Iain Haslam <iainhaslam at gmail.com> wrote: > > BTW, I really like the new > > > > ```source > > code > > ``` > > > > syntax. *Huge* timesaver. > > Continuing this particular off-topicness: Lucas, are you aware or in > favour of the bc(code). syntax alr...
2007 Sep 25
3
tcptop fail to run "Can''t find include file sys/tsol/label.h"
I try to run tcptop in solaris 10 x86 with patch level 125101-04 and I get the following error /usr/include/sys/zone.h line 16: can''t find include file sys/tsol/label.h error. Is there a work around for this problem? -- This message posted from opensolaris.org
2007 Nov 27
4
DTrace unconference?
All, With Jon Haslam''s exciting news about the DTrace doc wiki (if you haven''t seen it yet, make your way to http://wikis.sun.com/display/DTrace), and with some of the discussion with the Apple folks, I''m wondering if the time isn''t right for something of a DTrace summit, perhaps as...
2008 Aug 19
5
How accurate is "ustack"?
I have been doing some profiling using the profile provider. I have a command that runs more slowly on the T1000 than it does on prior systems and I am trying to find out why. Using the profile provider at 1000 hz, and aggregating on the ustack output, I find that the same function appears at the top of the stack on both platforms, but on each there are specific instruction locations within
2007 Nov 20
6
How to dereference a pointer to a pointer
Hi. I would like to print out a field of a vnode, but the argument to the function is of type vnode_t **. If I set "this->vpp" to arg2 in an entry function to zfs_lookup(), I''d like to retrieve the value of one of the fields of *(this->vpp) in the return function. Something like the below (but the syntax below is not right): printf("zfs_lookup:
2010 Feb 20
5
Dtrace starts very slowly on T5440
Hi all, We just got a shiny new T5440, and one of the first things I noticed (besides the insane number of hardware contexts), is that dtrace takes 30 seconds to a minute to fire up scripts with 5-6 probes, where our T5220 usually takes under a second. Shutdown is similar, though slightly faster. This is mostly annoying because it takes so long to attach that it''s hard to tell when
2005 Sep 15
10
Can I use printa() for printing multiple agg regations?
...evelopment mailto:philip.beevers at fidessa.com phone: +44 1483 206571 > -----Original Message----- > From: dtrace-discuss-bounces at opensolaris.org > [mailto:dtrace-discuss-bounces at opensolaris.org]On Behalf Of Bryan > Cantrill > Sent: 15 September 2005 07:29 > To: Jonathan Haslam > Cc: dtrace-discuss at opensolaris.org; Dragan Cvetkovic > Subject: Re: [dtrace-discuss] Can I use printa() for printing multiple > aggregations? > > > On Tue, Sep 13, 2005 at 11:00:21PM +0100, Jonathan Haslam wrote: > > > > >Okay. Perhaps all of the cases wher...
2008 Aug 25
11
pid-provider sees ld.so.1 only
I''m trying to do some userspace tracing on a server-process with the pid provider. My problem is, that the only probes the pid-provider lists for the server-process (to which I attach dtrace with "-p nnnn") are coming from "ld.so.1". There''s not a single one from my modules. If I''m specifying "a.out" (or any of our shared-objects) as the