Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus access regulation
Reexamination Certificate
2011-08-23
2011-08-23
Misiura, Brian T (Department: 2111)
Electrical computers and digital data processing systems: input/
Intrasystem connection
Bus access regulation
C710S029000, C710S107000, C711S146000, C719S321000, C719S327000
Reexamination Certificate
active
08006013
ABSTRACT:
The disclosure relates to a method and apparatus to efficiently address livelock in a multi-processor system. In one embodiment, the disclosure is directed to a method for preventing a system bus livelock in a system having a plurality of processors communicating respectively through a plurality of bus masters to a plurality of IO Controllers across a system bus by: receiving at an MMIO state machine a plurality of snoop commands issued from the plurality of processors, identifying a first processor and a second processor from the plurality of processors, each of the first processor and the second processor having a first number of snoop commands in the input queue and a second number of responses in the output queue, the first number and the second number exceeding a threshold; issuing a burst prevention response to the first processor and the second process.
REFERENCES:
patent: 5758104 (1998-05-01), Gujral et al.
patent: 5930485 (1999-07-01), Kelly
patent: 6065077 (2000-05-01), Fu
patent: 6078981 (2000-06-01), Hill et al.
patent: 6108736 (2000-08-01), Bell
patent: 6341337 (2002-01-01), Pong
patent: 6920516 (2005-07-01), Hartwell et al.
patent: 6968431 (2005-11-01), Mayfield
patent: 6993613 (2006-01-01), Connor et al.
patent: 7065598 (2006-06-01), Connor et al.
patent: 7437539 (2008-10-01), Abernathy et al.
patent: 7484131 (2009-01-01), Fields et al.
patent: 7613859 (2009-11-01), Asano et al.
patent: 2003/0101297 (2003-05-01), Allen et al.
patent: 2007/0118837 (2007-05-01), Doing et al.
patent: 2008/0065873 (2008-03-01), Hall et al.
patent: 2008/0320230 (2008-12-01), Vishin et al.
Goodman Benjamin Lee
Haraden Ryan Scott
International Business Machines - Corporation
Misiura Brian T
Salehi Dianoosh
Talpis Matthew B.
LandOfFree
Method and apparatus for preventing bus livelock due to... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for preventing bus livelock due to..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for preventing bus livelock due to... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2792280