Patents by Inventor Chun-Kwan K. Yee
Chun-Kwan K. Yee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9223663Abstract: A fault occurs in a virtual environment that includes a base space, a first subspace, and a second subspace, each with a virtual address associated with content in auxiliary storage memory. The fault is resolved by copying the content from auxiliary storage to central storage memory and updating one or more base space dynamic address translation (DAT) tables, and not updating DAT tables of the first and second subspace. A subsequent fault at the first subspace virtual address is resolved by copying the base space DAT table information to the first subspace DAT tables and not updating the second subspace DAT tables. A fault occurring with association to the virtual address of the first subspace is resolved for the base space and the base space DAT table information is copied to the first subspace DAT tables, and the second subspace DAT tables are not updated.Type: GrantFiled: June 22, 2012Date of Patent: December 29, 2015Assignee: International Business Machines CorporationInventors: David Hom, Matthew J. Mauriello, Donald W. Schmidt, Paula M. Spens, Elpida Tzortzatos, Chun-Kwan K. Yee
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Patent number: 8868876Abstract: Dedicated large page memory pools are provided to, at least in part, facilitate access to large pages. The large page memory is managed by: establishing multiple large page memory pools, each large page memory pool of the multiple large page memory pools including a number of large pages; and dedicating each large page memory pool of the multiple large page memory pools to a respective processor of multiple processors of the computing environment, wherein processors of the multiple processors can concurrently access pages from the respective large page memory pools of the multiple large page memory pools.Type: GrantFiled: December 28, 2011Date of Patent: October 21, 2014Assignee: International Business Machines CorporationInventors: Alfred F. Foster, David Hom, Charles E. Mari, Matthew J. Mauriello, Robert Miller, Jr., Mariama Ndoye, Michael G. Spiegel, Peter G. Sutton, Scott B. Tuttle, Elpida Tzortzatos, Chun-Kwan K. Yee
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Patent number: 8799611Abstract: Allocation of pages of memory is managed in computing environments that include multiple sized memory pools. Responsive to a request for a page of memory, one or more memory pools are searched for an available frame of memory to service the request. The search uses a predefined order of search, which includes multiple types of memory pools in a specific order based on the requested size of the page of memory.Type: GrantFiled: May 5, 2011Date of Patent: August 5, 2014Assignee: International Business Machines CorporationInventors: Alfred F. Foster, David Horn, Charles E. Mari, Matthew J. Mauriello, Robert Miller, Jr., Mariama Ndoye, Michael G. Spiegel, Peter G. Sutton, Scott B. Tuttle, Elpida Tzortzatos, Chun Kwan K. Yee
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Patent number: 8793444Abstract: Large page memory pools are managed. Thresholds are used to determine if the number of pages in a large page memory pool is to be adjusted. If the number of pages is to be increased, a particular technique is provided for adding additional pages to the pool. Further, if there are too many pages in the pool, one or more pages may be removed.Type: GrantFiled: May 5, 2011Date of Patent: July 29, 2014Assignee: International Business Machines CorporationInventors: Alfred F. Foster, David Horn, Charles E. Mari, Matthew J. Mauriello, Robert Miller, Jr., Mariama Ndoye, Michael G. Spiegel, Peter G. Sutton, Scott B. Tuttle, Elpida Tzortzatos, Chun Kwan K. Yee
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Publication number: 20130346792Abstract: A fault occurs in a virtual environment that includes a base space, a first subspace, and a second subspace, each with a virtual address associated with content in auxiliary storage memory. The fault is resolved by copying the content from auxiliary storage to central storage memory and updating one or more base space dynamic address translation (DAT) tables, and not updating DAT tables of the first and second subspace. A subsequent fault at the first subspace virtual address is resolved by copying the base space DAT table information to the first subspace DAT tables and not updating the second subspace DAT tables. A fault occurring with association to the virtual address of the first subspace is resolved for the base space and the base space DAT table information is copied to the first subspace DAT tables, and the second subspace DAT tables are not updated.Type: ApplicationFiled: June 22, 2012Publication date: December 26, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: David Hom, Matthew J. Mauriello, Donald W. Schmidt, Paula M. Spens, Elpida Tzortzatos, Chun-Kwan K. Yee
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Publication number: 20130173880Abstract: Dedicated large page memory pools are provided to, at least in part, facilitate access to large pages. The large page memory is managed by: establishing multiple large page memory pools, each large page memory pool of the multiple large page memory pools including a number of large pages; and dedicating each large page memory pool of the multiple large page memory pools to a respective processor of multiple processors of the computing environment, wherein processors of the multiple processors can concurrently access pages from the respective large page memory pools of the multiple large page memory pools.Type: ApplicationFiled: December 28, 2011Publication date: July 4, 2013Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Alfred F. FOSTER, David HOM, Charles E. MARI, Matthew J. MAURIELLO, Robert MILLER, JR., Mariama NDOYE, Michael G. SPIEGEL, Peter G. SUTTON, Scott B. TUTTLE, Elpida TZORTZATOS, Chun-Kwan K. YEE
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Publication number: 20120284483Abstract: Allocation of pages of memory is managed in computing environments that include multiple sized memory pools. Responsive to a request for a page of memory, one or more memory pools are searched for an available frame of memory to service the request. The search uses a predefined order of search, which includes multiple types of memory pools in a specific order based on the requested size of the page of memory.Type: ApplicationFiled: May 5, 2011Publication date: November 8, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Alfred F. Foster, David Hom, Charles E. Mari, Matthew J. Mauriello, Robert Miller, JR., Mariama Ndoye, Michael G. Spiegel, Peter G. Sutton, Scott B. Tuttle, Elpida Tzortzatos, Chun Kwan K. Yee
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Publication number: 20120284479Abstract: Large page memory pools are managed. Thresholds are used to determine if the number of pages in a large page memory pool is to be adjusted. If the number of pages is to be increased, a particular technique is provided for adding additional pages to the pool. Further, if there are too many pages in the pool, one or more pages may be removed.Type: ApplicationFiled: May 5, 2011Publication date: November 8, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Alfred F. Foster, David Hom, Charles E. Mari, Matthew J. Mauriello, Robert Miller, JR., Mariama Ndoye, Michael G. Spiegel, Peter G. Sutton, Scott B. Tuttle, Elpida Tzortzatos, Chun-Kwan K. Yee
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Patent number: 7216346Abstract: A method for managing the suspension and resumption of threads on an individual basis in an information handling system having an operating system (OS) kernel and a user process having multiple threads of execution. An originating thread issues a pthread_kill( ) service request to the OS kernel to send a specified signal (thread-stop or thread-continue) to a specified target thread within the same process to suspend or resume execution of the target thread. More particularly, in response to a request from a thread to suspend the execution of the target thread, the OS kernel sends a thread-stop signal (SIGTHSTOP) to the target thread, transferring control within the target thread from a normally executing program portion to a signal interrupt routine. Upon gaining control, the signal interrupt routine issues a service request to the kernel to stop the target thread.Type: GrantFiled: December 31, 2002Date of Patent: May 8, 2007Assignee: International Business Machines CorporationInventors: Ernest S. Bender, Chun-Kwan K. Yee
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Publication number: 20040139432Abstract: A method for managing the suspension and resumption of threads on an individual basis in an information handling system having an operating system (OS) kernel and a user process having multiple threads of execution. An originating thread issues a pthread_kill( ) service request to the OS kernel to send a specified signal (thread-stop or thread-continue) to a specified target thread within the same process to suspend or resume execution of the target thread. More particularly, in response to a request from a thread to suspend the execution of the target thread, the OS kernel sends a thread-stop signal (SIGTHSTOP) to the target thread, transferring control within the target thread from a normally executing program portion to a signal interrupt routine. Upon gaining control, the signal interrupt routine issues a service request to the kernel to stop the target thread.Type: ApplicationFiled: December 31, 2002Publication date: July 15, 2004Applicant: International Business Machines CorporationInventors: Ernest S. Bender, Chun-Kwan K. Yee