RE: [Fault-injection-developer] Need for benchmarking

[Gao, K. <kev...@in...>]

Yes, great idea!

-----Original Message-----
From: Zhuang, Louis=20
Sent: 2002=C4=EA12=D4=C216=C8=D5 8:45
To: Gao, Kevin; 'Rusty Lynch';
fau...@li...
Subject: RE: [Fault-injection-developer] Need for benchmarking


Maybe we can use LTP to test performance.

-----Original Message-----
From: Gao, Kevin [mailto:kev...@in...]
Sent: Monday, December 16, 2002 8:31 AM
To: 'Rusty Lynch'; fau...@li...
Subject: RE: [Fault-injection-developer] Need for benchmarking

We can do some tiny program to test the time of MMIO read,
write operation in such situation:

common kernel.
Kernel with our FITH, but no faultset.
Kernel with our FITH, but the address of faultset is not associate with =
the
operation.
Kernel with our FITH, corresponding faultset but no action.
Kernel with our FITH, and injection corresponding fault into the =
operation.

Any other ideas?

Kevin


-----Original Message-----
From: Rusty Lynch [mailto:ru...@li...]
Sent: 2002=C4=EA12=D4=C214=C8=D5 0:36
To: fau...@li...
Subject: [Fault-injection-developer] Need for benchmarking


We could use some standardized benchmarking to
periodically run on our code base to get a feel for how
much overhead our changes are adding.

For example our current code adds a hook to the
page fault handler.  It would be really easy to thrash
the kernel with even the smallest of tweaks to that
code.

Any idea's?  Kevin, have planned on putting something
together?

    -rustyl


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