Bug 23302

Summary: MBX: dhrystone performance
Product: [Retired] eCos Reporter: Jesper Skov <jskov>
Component: HALAssignee: ecc-bugs-int
Status: CLOSED CURRENTRELEASE QA Contact: ecc-bugs-int
Severity: low Docs Contact:
Priority: medium    
Version: CVS   
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2002-01-24 12:31:31 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Jesper Skov 2001-01-04 14:21:38 UTC
Way back when, I ran dhrystone tests on both eCos and Linux on the 
same MBX board. The  version on Linux ran quite a bit faster. Possibly
missing some board initialization magic in the HAL.

Comment 1 George Thomas 2002-01-24 12:31:25 UTC
I just noticed that the performance of the MBX board when running from RAM is
less than 50% of what it is when run from ROM.  This is most likely a RAM vs.
ROM hardware configuration problem (the RAM is DRAM which runs via a complicated
setup).  Fix this anomaly and you'll probably fix the Dhrystone performance
problem as well.

Comment 2 George Thomas 2002-04-11 17:23:44 UTC
The caches were not being set up properly, certainly not for RAM based
applications.  This has been fixed and the Dhrystone benchmark now runs more
than 4 times faster than before.