This is what I wrote on the solution at that time:
�
I've finally solved this issue. Posting here for the benefit of list lurkers and archive readers who may hit the same problem in the future:
This was actually a Linux Kernel "bug". I've fixed it by upgrading to a 2.4.20 kernel built with CONFIG_X86_TSC_DISABLE set. I don't know whether there's a solution for earlier kernels (this config var doesn't exist in 2.4.18).
From the 2.4.20 kernel Configure.help:
Unsynced TSC support CONFIG_X86_TSC_DISABLE This option is used for getting Linux to run on a NUMA multi-node boxes, laptops and other systems suffering from unsynced TSCs or TSC drift, which can cause gettimeofday to return non-monotonic values. Choosing this option will disable the CONFIG_X86_TSC optimization, and allows you to then specify "notsc" as a boot option regardless of which processor you have compiled for.
NOTE: If your system hangs when init should run, you are probably using a i686 compiled glibc which reads the TSC without checking for availability. Boot without "notsc" and install a i386 compiled glibc to solve the problem.
If unsure, say N.
Salut,
Jordi. �
Hope this helps.
-- Salut,
Jordi.
luke cassady-dorion wrote:
thnx for the reply, do you know the bug number? i tried search for all jmeter bugs with "negative" in the subject or body and found nothing.
thnx
-----Original Message-----
From: Jordi Salvat i Alabart [mailto:[EMAIL PROTECTED] Sent: Friday, August 08, 2003 1:03 PM
To: JMeter Users List
Subject: Re: nagative numbers in listener results
That you have a faulty Linux kernel.
There's an option somewhere when compiling the kernel that you need to set to avoid this. There's a (closed) bug report for JMeter about this. Feel free to reopen it with a comment that we should document the issue.
luke cassady-dorion wrote:
when running tests i sometimes get negative numbers in the
min column
of my aggregate report. does anyone know what this means?
thnx
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-- Salut,
Jordi.
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-- Salut,
Jordi.
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