I don't think anyone disagrees that measuring latency is a bad idea.
Note Brendan's comments in http://osnews.com/permalink?296801
http://osnews.com/permalink?296801
Encouraging customers to look at latencies for performance analysis is
really important.
...
If this tool does get customers to
On Jan 19, 2008 9:04 AM, Colin Burgess [EMAIL PROTECTED] wrote:
Well I see that Brendan did reply to the OSNews link to this. He basically
shot them down at hardcoding the instrumentation - as he should have! :-)
Shame on Intel - they should know better!
Colin
I'm not a member of the linux
Hi Gurus
Quick question.
I have JVM 1.5 running with Solaris 9.
Can DTrace be used with such a configuration or is DTrace only for Solaris
10 ?
Thanks
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On Jan 21, 2008 2:58 PM, Z W [EMAIL PROTECTED] wrote:
Can DTrace be used with such a configuration or is DTrace only for Solaris
10 ?
DTrace is only for Solaris 10.
Time to upgrade ;-)
Rayson
Thanks
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Hi, I am trying to debug the bottle neck(s) in a Solaris 10
Mailman/Spamassassin/Sendmail VMWare VM and get the following error from
tcptop:
[EMAIL PROTECTED]:~ 1:35pm 103 # ./tcptop
dtrace: failed to compile script /dev/fd/11: line 40: failed to resolve
SS_TCP_FAST_ACCEPT: Unknown variable name
On Mon, Jan 21, 2008 at 01:39:03PM -0800, Fletcher Cocquyt wrote:
Hi, I am trying to debug the bottle neck(s) in a Solaris 10
Mailman/Spamassassin/Sendmail VMWare VM and get the following error from
tcptop:
[EMAIL PROTECTED]:~ 1:35pm 103 # ./tcptop
dtrace: failed to compile script
Followup - this system has a lot of kernel activity and I/O - (top typically
shows CPU 50% kernel) - but the hotkernel blorked with this (eventhough
load avg was only ~2 and command line is responsive):
[EMAIL PROTECTED]:~ 1:41pm 114 # ./hotkernel
Sampling... Hit Ctrl-C to end.
dtrace:
G'Day,
On Mon, Jan 21, 2008 at 01:39:03PM -0800, Fletcher Cocquyt wrote:
Hi, I am trying to debug the bottle neck(s) in a Solaris 10
Mailman/Spamassassin/Sendmail VMWare VM and get the following error from
tcptop:
[EMAIL PROTECTED]:~ 1:35pm 103 # ./tcptop
dtrace: failed to compile script
On Mon, Jan 21, 2008 at 01:55:36PM -0800, Fletcher Cocquyt wrote:
Followup - this system has a lot of kernel activity and I/O - (top typically
shows CPU 50% kernel) - but the hotkernel blorked with this (eventhough
load avg was only ~2 and command line is responsive):
[EMAIL PROTECTED]:~
On Mon, Jan 21, 2008 at 02:17:46PM -0800, Fletcher Cocquyt wrote:
Replaced SS_TCP_FAST_ACCEPT with SS_DIRECT in tcptop per the thread you
cited - now I get a new error:
[EMAIL PROTECTED]:~ 2:14pm 133 # ./tcptop
dtrace: failed to compile script /dev/fd/11: line 163: failed to resolve
On Mon, Jan 21, 2008 at 02:16:02PM -0800, Brendan Gregg - Sun Microsystems
wrote:
On Mon, Jan 21, 2008 at 01:55:36PM -0800, Fletcher Cocquyt wrote:
Followup - this system has a lot of kernel activity and I/O - (top typically
shows CPU 50% kernel) - but the hotkernel blorked with this
On Mon, Jan 21, 2008 at 02:48:47PM -0800, Fletcher Cocquyt wrote:
Forgive me, where do I find 'interstat' ?
Also, where can I get Sun::Solaris::Kstat for prustat?
It's probably already under /usr/perl5/5.8.4/lib - it's a vendor (Sun)
supplied package.
prustat was written as a demo tool - it
Thanks - prustat works great once I point it at Sun's perl (I was using a
newer install)
I'm going to record some snapshots when the contention is happening...
What if I wanted to quantify the latency (wait times) due to DNS lookups (I
suspect I could benefit from a local caching install - but I
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