similar to: I/O bottleneck Root cause identification w Dtrace ?? (controller or IO bus)

I am looking for Dtrace scripts that can be used to collect data during performance tests. I am especially interested in IO but CPU, memory, threads, etc are needed as well. Thanks, Dave

Does anyone out there have any thoughts on the type of load common DTrace scripts would cause on a system if run 24x7? I know "common DTrace scripts" and their underlining probe calls a vague statement. So for the lack of a common and establish set of scripts in the OS, I''ll use the most popular right for my question...the DTraceToolkit from Brendan Gregg. Which by the

I see Intel has released a new tool. Oh, it requires some patches to the kernel to record latency times. Good thing people don''t mind patching their kernels, eh? So who can write the equivalent latencytop.d the fastest? ;-) http://www.latencytop.org/ -- cburgess at qnx.com

I''m looking for a suggestion on a good way to hunt down the source of high context switching and mutex contentions... Is dtrace the way to go now, or should I stick with something like lockstat? Russ This is a 5 second interval for mpstat: CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 16 0 0 1115 1241 206 9095 912 2420 7393 0 12105 68 25

We''re running a Solaris 10 container, with an Oracle 9.2.0.4 database - every 5-10 min, an Oracle process shoots up (using 20% + CPU) and then goes down in CPU %, doing a [i]pollsys [/i](see it via dtruss). I tried using some of the trace scripts in the Dtracetoolkit to see what the process is doing, but without any luck - also tried with the following, but dtrace process goes up to 30%

Hey all - Time for my silly question of the day, and before I bust out vi and dtrace... If there a simple, existing way I can observe the read / write / IOPS on a per-zvol basis? If not, is there interest in having one? Cheers! Nathan.

Folks, I came across an IPv6 snv_31 network driver problem during testing. I can "ping" an IPv6 address, but when I try and log on to the IPv6 address I get an RPC failure. Not knowing much about dtrace, I thought I would give some of the networking dtrace scripts a try that I found here: http://www.opensolaris.org/os/community/dtrace/dtracetoolkit/ (tcptop or any other script in the

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

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

Howdy, Is there a method to get the number of elements in an aggregation? Are the results stored in an aggregation guaranteed to be in any type of order? Thanks for any insight, - Ryan -- UNIX Administrator http://daemons.net/~matty

Is there a trick to listing available providers? I can''t find it.

G''Day Folks, Check out this DTrace script, # ./swapinfo.d RAM _______Total 511 Mb RAM Unusable 8 Mb RAM Kernel 96 Mb RAM Locked 0 Mb RAM Used 318 Mb RAM Avail 88 Mb Disk _______Total 1023 Mb Disk Used 9 Mb Disk Avail 1014 Mb Swap _______Total 1367 Mb Swap Used 327

Is there any work on keeping DTraceTools up to date with the latest snv builds. These scripts are pretty useful and help get a novice dtrace user like me doing useful work quickly. Specifically the tcp stack tools like tcptop and tcpsnoop don''t work with later OpenSolaris builds. Thanks, Gary -- This message posted from opensolaris.org

A small script to see what SCSI commands are being issued by a system: http://blogs.sun.com/roller/page/chrisg?entry=scsi_d_script Still work in progress as I needs to handle larger CDBs but it is a start, since I don''t have a disk that big it is not a problem for me yet. Also getting the return scsi packet is a hack but so far I can see no alternative short of knowing about all the

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

Incase of multi-core systems where multiple threads maybe scheduled for execution, does the below dscript (from hotuser in DTraceToolkit) collect information for multiple libraries/functions that would be getting executed at a given point of time. I have been able to test it to check if it does or doesn''t. I assume it does. This was a query I have about profiling in general. #pragma D

Hello all, i''m trying to run the tool tcptop from the dtracetoolkit but it fails. I got the following error: tcptop -C 30 dtrace: failed to compile script /dev/fd/11: "usr/include/sys/kstat.h", line 439: invalid type combination I let it run on different machines on a Ultra 45 and a E20K both with Solaris 10 same result. any ideas? best regards Jens This message

I''m an Oracle DBA, a dtrace noob, and I''m attempting to resolve an Oracle write performance problem on Solaris 10, Oracle 9iR2. The Oracle DBWR processes have poor write throughput writing to VxFS files. I suspect that the problem may be with POSIX readers/writer file locking. Ideally I''d like to identify, for a given DBWR process, readers/writer file lock contention

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:

I just had a quick play with gzip compression on a filesystem and the result was the machine grinding to a halt while copying some large (.wav) files to it from another filesystem in the same pool. The system became very unresponsive, taking several seconds to echo keystrokes. The box is a maxed out AMD QuadFX, so it should have plenty of grunt for this. Comments? Ian