search for: leventhal

...umentation+Bugs Feel free to start editing the docs. If you plan to make changes that are larger than a typo please first send email to dtrace-discuss at opensolaris.org and wait for approval from a core contributor or for 5 days to pass. To gain access to the DTrace wiki space contact Adam (adam.leventhal at sun.com). If you are working on a bug from the bug list make sure you update the owner column of the bug to reflect the fact. When you''ve finished please update the column in the bug list to reflect that fact. That''s it! This procedure is subject to change but we''ll s...

...iSCSI Name: iqn.1986-03.com.sun:02:4db92521-f5dc-cde4-9cd5-a3f6f567220a Connections: 0 Note again that all configuration information is stored with the dataset. As with NFS shared filesystems, iSCSI targets imported on a different system will be shared appropriately. ---8<--- -- Adam Leventhal, Solaris Kernel Development http://blogs.sun.com/ahl

How do I query an application to see if it supports any USDT probe points?

Hello, everyone I am a newbie of DTrace and OpenSolaris. Just wondering is it possible to trace every memory read/write of a specific process given the pid? Basically speaking, I want to record the virtual addresses being accessed by the process, using which I will try to do some online analysis. If DTrace does not support this type of instrumentation, will other tools in OpenSolaris help me

Hi all, Please pardon my newbie-ness on this issue....I've a / partition which is full (quite suddenly, actually) and I'm not sure how to fix this. I've searched for uneeded logs, etc in /var/log and /tmp to no avail. The system is CentOS 5.2 and is not connected to the internet, serves as a local LAN server running stock stuff...sendmail, dovecot, apache..nothing strange or

Hi, I''m working on some performance analysis with our database and it seems that when the file system (UFS) is mounted with forcedirectio, the IO probe are not triggered when an I/O event occurs. Could you confirm that ? If so, why ? Seb -- This message posted from opensolaris.org

This came up as an RFE during the conference (I believe it''s been logged as "4012008: brendan() action needed for DTrace Toolkit".) As everyone here is aware, DTrace is not quite as user friendly as it could be. For the uninitiated, it can be confusing to run a DTrace script and not see the expected output. Brendan Gregg has addressed this in the DTrace Toolkit[1] by

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 - I''m trying to use plockstat to help identify any mutex contention issues we may have in our c++ app. >From the docs it would appear to be a very useful tool - unfortunately in practice this doesn''t bear out purely because the stack traces produced are limited to being 39/40 characters wide. In general this means that I''m not seeing ~75% of each stack symbol and

Hi All, I''ve got a problem when I have USDT probes in a static library and in the application code outside of the library. I build the static library containing some USDT probes, glomming everything together (ld -r) before creating the .a file to preserve the probe symbols. This all works fine. I build an application which also has some USDT probes. When I build the application which

...th a "*" are no longer involved with ZFS and we should let their grants expire. I am nominating the following to be new Core Contributors of ZFS: Jonathan W. Adams (jwadams) Chris Kirby Lin Ling Eric C. Taylor (taylor) Mark Musante Rich Morris George Wilson Tim Haley Brendan Gregg Adam Leventhal Pawel Jakub Dawidek Ricardo Correia For Contributor I am nominating the following: Darren Moffat Richard Elling I am voting +1 for all of these (including myself) Feel free to nominate others for Contributor or Core Contributor. -Mark

Hi, I was going through the implementation of the fasttrap provider. I found that when displaced execution happens (ie., when the instruction traced is being executed out of the scratch space) if an asynchrnous signal comes we need to defer the delivery. Can somebody explain why this is necessary and how is it implemented? Thanks in advance Saravanan S -------------- next part -------------- An

As this remains an issue for me, I'm reposting. Please forgive the redundancy, but I've been unable to find the answer and am hoping for some guidance. Thanks in advance, ~Ray ==========Original Posts follow========== (full output is in the original thread) Ray Leventhal wrote: > > Hi all, > > > > On my newly up-and-running nameserver (CentOS 5), I noticed the > > following alerts in /var/log/messages after restarting BIND. (lines > > inserted to aid in reading). > > As I'm new to SELinux, I'm hoping for some pointers o...

Hi, I'd be happy to offer my services in proofreading the newsletter if this is needed. My 'day' job is that of a technical writer and I'm a native english speaker. If I can be of help, I'd be happy to. Regards, Ray Leventhal

Hi, I have used dtrace in the past for diagnosing IO/filesystem related issues. So I am a bit familiar with dtrace scripts Now I want to diagnose performance problems in the java area. May be memory leak etc. The hotspot provider is not present. How can I get them? Does someone have any further advice? regards Hans -- This message posted from opensolaris.org

HI folks, Apologies if this is OT. If it is, please msg me offllist and I'll carry on my searching elsewhere. Where does mysql actually store databases and tables in the filesystem? Thanks in advance -Ray

I''m trying to install CiscoWorks 2.5 on Solaris 10 update 1, and after the install when I try to start the daemon, it errors: # /opt/CSCOpx/objects/dmgt/dmgtd.sol ERROR: open file dmgtd failedERROR >>>>>>>>>>>>> open msg catalog failed. NLSPATH incorrect or objects/share/nls/C/dmgtd.cat is missing. # echo $NLSPATH

Hi, # uname -a Linux obfuscated.example.com 2.6.18-128.4.1.el5 #1 SMP Tue Aug 4 20:23:34 EDT 2009 i686 i686 i386 GNU/Linux I noticed a few days ago that I'm not getting my logwatch emails to the root account any longer, and while I've definitely been applying updates from base, no other changes have happened on this box. I ran logwatch at the command line: logwatch --detail medium

Hi all, With SELinux in permissive mode and iptables running, I'm unable to retrieve directory listings with ftp. stop iptables, and all appears again. This seems to be unrelated to passive/port modes for ftp client. If this is off topic, please let me know offlist and I'll take my question elsewhere. Otherwise I'll repost with output of # iptables status TIA, ~Ray

...OS X DTrace port has been updated in 10.5.3 to fix the issue that caused timer based probes not to fire in the presence of certain untraceable applications. http://blogs.sun.com/ahl/entry/apple_updates_dtrace A big thank you to the folks at Apple for addressing the problem. Adam -- Adam Leventhal, Fishworks http://blogs.sun.com/ahl