similar to: How to dtrace which process is writting a veritas volume?

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, GridEngine (http://gridengine.sunsource.net, aka. SGE) is an opensource batch system for clusters. They have an integration with SSH: http://gridengine.sunsource.net/project/gridengine/howto/qrsh_ssh.html The idea is that instead of using a modified rsh/rshd, they wanted to OpenSSH. However, in order to provide full job control, they need to add a few hooks in OpenSSH. Question: - Is it OK

Hello, I''m a grad student working at University of Michigan in computer architecture. I''m writing to open up the idea that instrumentation of the xvm would be extremely useful tool for the research community. Those of us interested in virtualization are very interested in monitoring the behavior of these systems and with low engineering effort! I was hoping to get feedback on

After the interesting revelations about the X2100 and it''s hot-swap abilities, what are the abilities of the X2200-M2''s disk subsystem, and is ZFS going to tickle any wierdness out of them? -brian -- "The reason I don''t use Gnome: every single other window manager I know of is very powerfully extensible, where you can switch actions to different mouse buttons.

Boy am I a dummy. I want to simply dump out unfreed allocations when I terminate the script. What''s the secret sauce? #!/usr/sbin/dtrace -s pid$1::MyAlloc:return { bufs[arg1] = walltimestamp; } pid$1::MyFree:entry /bufs[arg0]/ { bufs[arg0] = 0; } This message posted from opensolaris.org

I was wondering if there was a way to get from the fileinfo_t->fi_mount to the NFS directory mounted there? IE: Is there are way to determine what server:/path is mounted on the mountpoint stored in fi_mount? -- This message posted from opensolaris.org

Hi, Chris (cc) and I try to get the SGE master monitor work with Apple Leopard dtrace. Unfortunately we are stuck with the error msg below. Anyone having an idea what could be the cause? What I can rule out as cause is function inlining for the reasons explained below. Background information on SGE master monitor implementation is under http://wiki.gridengine.info/wiki/index.php/Dtrace

Hi all: Can dtrace trouble-shoot the MPI porgrams (HPC programs)? Does there exist an extension on dtrace to debug MPI program? If exist, then where can I find the how-to documentations? Thanks in advance? Regards TJ -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi, we are developing and operating an very critical application in the financial sector. Now our customer wants us to report performance data (roundtrip times of the messages routed). My idea is using dtrace to measure the times with the pid provider catching the timestamps on entry of the in and out functions of the processes. Now my questions ;-): 1) Is this an appropriate method to monitor

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

Hello. I''m a nobody. I use Linux. I have a hard-drive. I want the best / sexiest / what ever fs for my hard-drive, as it isn''t one of those flashy flash drives, which I presume don''t need an fs (???). I was THRILLED that the ZFS for Linux thread started. And, I was equally horrified (and sufficiently annoyed that I am starting this new thread) when it degraded in to

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

I''ve tried to set up a SAMBA file server that acts completely identical with a Microsoft Windows 2000 or 2003 one. First of all, the problem with the ACI ordering is simple: The Microsoft ACI specification imposes that the DENY ACIs are put on top. It can be solved with a simple chmod. Problem no.2 the Samba NFSv4 ACL module doesn''t interpret owner@, group@, everyone at . While

We are using MySQL, and love the idea of using zfs for this. We are used to using Direct I/O to bypass file system caching (let the DB do this). Does this exist for zfs? This message posted from opensolaris.org

Does dtrace have a problem catching the return from memset on Mac OSX? The script below catches the entry just fine but the return clause is never entered. Thanks, Joel --- pid$target::memset:entry /arg1 == 0/ { self->size = arg2; self->ts = timestamp; self->vts = vtimestamp; } pid$target::memset:return /self->size/ { @ts = sum(timestamp - self->ts); @vts =

Hello, I believe that ZFS and it''s concepts is truly revolutionary to the point that I no longer see any OS as modern if it does not have comparable storage functionality. Therefore I think that file system/disk manager with similar qualities should be written for Linux. Does Sun have plans to dual license ZFS as GPL so it can be ported to native Linux? If not, is it legal to write

Hello, I use Brendan''s sysperfstat script to see the overall system performance and found the the disk utilization is over 100: 15:51:38 14.52 15.01 200.00 24.42 0.00 0.00 83.53 0.00 15:51:42 11.37 15.01 200.00 25.48 0.00 0.00 88.43 0.00 ------ Utilisation ------ ------ Saturation ------ Time %CPU %Mem %Disk %Net CPU Mem

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

In "Solaris Internals", ZFS is not covered. I would think that ZFS would lie in the VFS subsystem, but I seem to recall reading that this is not the case. Could someone point me to a doc/diagram that would help clarify this for me? Thanks, Brian -------------- next part -------------- An HTML attachment was scrubbed... URL:

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"/ {