topic Why does amplifier sometimes reboot the system in memory access in Analyzers

Why does amplifier sometimes reboot the system in memory access profiling?

rudaho — Mon, 18 Jul 2011 02:29:45 GMT

Hi ~

I'm using amplifier to do memroy access profile. During collecting memory access data (program executing), sometimes the system got reboot. This happened frequently and I had no idea about why this happened.

The OS used is
Linux 2.6.18-194.el5 #1 SMP Tue Mar 16 21:52:39 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux

The CPU is
Intel Xeon CPU E5640 @ 2.67GHz

Any idea about why this happened and how to avoid this will be appreciated. Thanks a lot ...

BR

Yi-Ju

Why does amplifier sometimes reboot the system in memory access

David_A_Intel1 — Mon, 18 Jul 2011 23:40:08 GMT

Hi Yi-Ju:

If by "memory profiling" you mean one of the "Memory Access" analysis types, it would seem that the driver is not compatible with your Linux system. Which "release" of Linux are you using (what is the output of 'cat /etc/*-release')?

Did you build the driver or was the pre-built driver installed?

Why does amplifier sometimes reboot the system in memory access

rudaho — Tue, 19 Jul 2011 01:18:45 GMT

Hi MrAnderson~

I had the system reboot while performing memory access analysis. The linux used is Red Hat Enterprise Linux Server release 5.5 (Tikanga). But I don't know how the driver is installed. The IT guy here who helped to install the driver left our company and I have no information about this. Is there anyway I can figure it out? Thanks...

BR

Yi-Ju

Why does amplifier sometimes reboot the system in memory access

David_A_Intel1 — Tue, 19 Jul 2011 19:37:04 GMT

Do you have root access? If not, it will be difficult, at best. You need to be able to execute privileged commands.

Why does amplifier sometimes reboot the system in memory access

rudaho — Wed, 20 Jul 2011 00:44:02 GMT

Hi MrAnderson~

No, I don't have root access and the company's policy doesn't allow this privileged access. So I need to ask our IT to perform any specific privileged commands. Is there a procedure which I can ask our IT guy to do to check this issue? Thanks...

BR

Yi-Ju

Why does amplifier sometimes reboot the system in memory access

rudaho — Thu, 28 Jul 2011 01:54:06 GMT

Hi ~

As our current observation, we found that this is because the running VMware on the same host. If we turn off VMware, then amplifier will not turn off the host. We didn't know why, but at least the problem is solved by close VMware.

BR

Yi-Ju