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公开(公告)号：CA2471594A1
公开(公告)日：2003-07-31
申请号：CA2471594
申请日：2003-01-17
Applicant: IBM
Inventor： WOLF JOEL L , YU PHILIP S
Abstract: Disclosed is a method for controlling a web farm having a plurality of websites and servers, the method comprising categorizing customer requests received from said websites into a plurality of categories, said categories comprising a shareable customer requests and unshareable customer requests, routing said shareable customer requests such that any of said servers may process shareable customer requests received from different said websites, a nd routing said unshareable customer requests from specific said websites only to specific servers to which said specific websites have been assigned.
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Patent Agency Ranking
公开(公告)号：CA2142795A1
公开(公告)日：1995-09-16
申请号：CA2142795
申请日：1995-02-17
Applicant: IBM
Inventor： WOLF JOEL L , YU PHILIP S
Abstract: A system and method of supporting pause-resume in a video-on-demand service of a type which can accommodate multiple viewers sharing a common data stream is described. When a video server receives a performance request from one of the viewers for showing a particular video, it identifies and reserves a look-ahead stream. The look-ahead stream is another video stream which is scheduled to become available after a predetermined time period. When the video is commenced, a common data stream for the video is concurrently transmitted from the video server to reception equipment at the viewers' locations. Transmission of the common data stream causes the particular video to be performed on the viewers' reception equipment. When the video server receives a pause request and then a subsequent resume request from one of the viewers, it transmits the video via the look ahead stream instead of the common data stream.
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公开(公告)号：CA2471594C
公开(公告)日：2010-06-01
申请号：CA2471594
申请日：2003-01-17
Applicant: IBM
Inventor： WOLF JOEL L , YU PHILIP S
Abstract: Disclosed is a method for controlling a web farm having a plurality of websites and servers, the method comprising categorizing customer requests received from said websites into a plurality of categories, said categories comprising a shareable customer requests and unshareable customer requests, routing said shareable customer requests such that any of said servers may process shareable customer requests received from different said websites, and routing said unshareable customer requests from specific said websites only to specific servers to which said specific websites have been assigned.
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公开(公告)号：CA2145164C
公开(公告)日：1998-12-15
申请号：CA2145164
申请日：1995-03-20
Applicant: IBM
Inventor： SHACHNAI HADAS , WOLF JOEL L , YU PHILIP S
Abstract: A video on demand computer system includes a plurality of storage media each storing a plurality of videos. The storage media are disks attached to a computer system. The computer system plays the videos on demand by reading out the videos from the disks as data steams to play selected ones of the videos for users responsive to received user performance requests. The computer system is programmed to monitor the numbers of videos being performed for each of the disks. Based on the monitoring function performed by the computer system, the computer system performs a load balancing function by transferring the performance of a video in progress from one of the disks to another disk having a copy of the video in progress. The computer system periodically performs a reassignment function to transfer videos between the disks to optimize load balancing based on the user performance requests for each of the videos. There are two phases to the load balancing performed by the computer system; a static phase and a dynamic phase. In the static phase, videos are assigned to memory and disks, and in the dynamic phase there is provided a scheme for playing videos with minimal and balanced loads on the disks. The static phase supports the dynamic phase which insures optimal real-time operation of the system. Dynamic phase load balancing is accomplished by a process of baton passing.
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公开(公告)号：CA2142795C
公开(公告)日：2000-12-05
申请号：CA2142795
申请日：1995-02-17
Applicant: IBM
Inventor： WOLF JOEL L , YU PHILIP S
Abstract: A system and method of supporting pause-resume in a video-on-demand service of a type which can accommodate multiple viewers sharing a common data stream is described. When a video server receives a performance request from one of the viewers for showing a particular video, it identifies and reserves a look-ahead stream. The look-ahead stream is another video stream which is scheduled to become available after a predetermined time period. When the video is commenced, a common data stream for the video is concurrently transmitted from the video server to reception equipment at the viewers' locations. Transmission of the common data stream causes the particular video to be performed on the viewers' reception equipment. When the video server receives a pause request and then a subsequent resume request from one of the viewers, it transmits the video via the look ahead stream instead of the common data stream.
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公开(公告)号：CA2145164A1
公开(公告)日：1995-11-12
申请号：CA2145164
申请日：1995-03-20
Applicant: IBM
Inventor： SHACHNAI HADAS , WOLF JOEL L , YU PHILIP S
Abstract: A video on demand computer system includes a plurality of storage media each storing a plurality of videos. The storage media are disks attached to a computer system. The computer system plays the videos on demand by reading out the videos from the disks as data steams to play selected ones of the videos for users responsive to received user performance requests. The computer system is programmed to monitor the numbers of videos being performed for each of the disks. Based on the monitoring function performed by the computer system, the computer system performs a load balancing function by transferring the performance of a video in progress from one of the disks to another disk having a copy of the video in progress. The computer system periodically performs a reassignment function to transfer videos between the disks to optimize load balancing based on the user performance requests for each of the videos. There are two phases to the load balancing performed by the computer system; a static phase and a dynamic phase. In the static phase, videos are assigned to memory and disks, and in the dynamic phase there is provided a scheme for playing videos with minimal and balanced loads on the disks. The static phase supports the dynamic phase which insures optimal real-time operation of the system. Dynamic phase load balancing is accomplished by a process of baton passing.
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