similar to: Comments on a Systemtap vs Dtrace comparison.

Hello I have read that under Solaris one can use DTrace to get I/O request size distribution on a global scale (also on a per process/pid basis). See for example http://prefetch.net/articles/observeiodtk.html Can anyone?recommend?an alternative to get similar information under CentOS? I looked into dtrace for linux but it seems still work in progress, even putting aside CDDL issues ...

My leaky memory says we moved entry-point into some form of debug record in the standard libraries, circa Solaris 8/9. Before that, my group maintained text files that listed all the entry-points and their parameters for libraries like libc.so, so that we could print out parameter values in apptrace(8). There''s a (small) chance the records are complete enough that dtrace could use the

Hi folks In linux kernel development, there is a debug tool called dprobe ,which can be used to dynamic insert the probes into the function of kernel source code and find what''s goning on.There is also a tool called systemtap which is based on dprobe and kernel debug info. Using the kprobes infrastructure, SystemTap is being developed to dynamically instrument the kernel and user

Hello All, I've been trying to track down information on Systemtap in Centos 4.3. What I want to know is whether there are any additions to the Systemtap functionality in 4.2 in the 4.3 release. thanks, Rich Johnson -- Richard Johnson <richj25 at earthlink.net>

Hi Here is System tap''s representives response to my comments and mine back to that list. Since it was on a public mailing list i''m reposting here, since there is obvious interest. James Dickens uadmin.blogspot.com ---------- Forwarded message ---------- From: James Dickens <jamesd.wi at gmail.com> Date: Sep 13, 2006 1:51 PM Subject: Re: Systemtap vs Dtrace web page

How do we probe the Xen hypervisor, while running as the dom0 (which is the GUI frontend for us, and running as guest)? Since the entry to hypervisor is controlled, I supposed it will need a patch before systemtap can be used to probe the Xen hypervisor, right? Or is it not a logical thing to do? My target of interest will be to trace/analyze the behavior of the Xen hypervisor, and the

I want to use systemtap on a 5.3 system but cannot find supporting kernel-PAE-debuginfo or kernel-debuginfo-common packages. Am I being a noob, or do these not exist for the PAE kernel? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20101202/82cc98b8/attachment-0002.html>

Hi Rich: What do you think about this idea? although this still has some problems like do 'vfs-type /dev/vda'. Can you give some comments about this? Is this a bad idea? Thanks -Wanlong Gao ----------------------------------------------------------------------------- Use libblkid directly instead of the binary command in blkid. Signed-off-by: Wanlong Gao <gaowanlong at

We got a remote Oracle 10g R2 standby running on OCFS2. Initial when we started the standby, read I/O was < 5MB/sec on average. Since then it has grown to over 40MB/sec (longer average, it peaks much higher). Here is a graph showing this: http://www.alameda.net/~ulf/dbphx01.png We also have a local standby running (on EXT3) which is not showing the same symptom. I am trying to find where all

Hi ! I have a server (Centos 5) that is using a pair of SAS drives to store the data. (Mail server) They are on an adaptec raid controler with a battery backup and write back cache active. >From time to time, I have sever peak io to those data disks (> 400 to 500 iops, > 70 to 100 megs/sec). With iostat, I find that it's almost a write i/o problem. How can I find to which files

CentOS Errata and Bugfix Advisory 2012:1337 Upstream details at : https://rhn.redhat.com/errata/RHBA-2012-1337.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 78e4e7183cabb6a0f708f24c57a8c4aaeed1d6e564aa49d4e4c85cce9fa1efa2 systemtap-1.7-5.el6_3.1.i686.rpm

CentOS Errata and Bugfix Advisory 2013:1858 Upstream details at : https://rhn.redhat.com/errata/RHBA-2013-1858.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 44c4a9c1d76fd1d64fb959a58507b15d3137d102848ee46929180dd618d2aebd systemtap-2.3-4.el6_5.i686.rpm

I was in the middle of a yum update on physical box over teh weekend and power died. Ssytem came pack up. But now when I run yum-complete-transaction I get all kinds of errors (these are just the last 4, there are many) systemtap-runtime-4.0-10.el7_7.x86_64 has installed conflicts systemtap-devel < ('0', '4.0', '10.el7_7'): systemtap-devel-4.0-9.el7.x86_64

CentOS Errata and Security Advisory 2012:0376 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2012-0376.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: be4161ae13dff00f28989c3d0611be9a2e2c1ba455bf2f97ef84b5187873231d systemtap-1.6-5.el6_2.i686.rpm

CentOS Errata and Security Advisory 2012:0376 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2012-0376.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 25e6d5acd46e860911b7b445ad9d02d52d2448f74b279dc09a5b2c3b619703c9 systemtap-1.6-7.el5_8.i386.rpm

CentOS Errata and Bugfix Advisory 2017:3311 Upstream details at : https://access.redhat.com/errata/RHBA-2017:3311 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 6701d1f4b2fc20344fdbb3545ff5b4ee4b32803964093dd9d81c7cbd46b1e61a systemtap-3.1-4.el7_4.x86_64.rpm

CentOS Errata and Bugfix Advisory 2018:0149 Upstream details at : https://access.redhat.com/errata/RHBA-2018:0149 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 8c63444e7f9b64378cce961c5997daa295551fd1b421fc6c97d8d1badf1ced56 systemtap-3.1-5.el7_4.x86_64.rpm

CentOS Errata and Bugfix Advisory 2018:1981 Upstream details at : https://access.redhat.com/errata/RHBA-2018:1981 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 04a71f086e65aa335ef31be1b650c1a1b97ebb1b917b28665b7f9c2a0f622942 systemtap-3.2-8.el7_5.x86_64.rpm

CentOS Errata and Bugfix Advisory 2019:3075 Upstream details at : https://access.redhat.com/errata/RHBA-2019:3075 The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: fb8b9d8d19e24baeb25fa4a350e308e0364791fc179c55463df5b5bbabdcac0b systemtap-4.0-10.el7_7.x86_64.rpm

CentOS Errata and Bugfix Advisory 2014:1360 Upstream details at : https://rhn.redhat.com/errata/RHBA-2014-1360.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 752157afa4eaf26f375d0770eae0e64459a5ee65099ffd6637dd8f7a0fe0f314 systemtap-2.4-16.el7_0.x86_64.rpm