The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 1997
Filed:
Feb. 22, 1996
Atsushi Matsuno, Hitachi, JP;
Masanori Naito, Hitachiota, JP;
Hiroshi Kobayashi, Katsuta, JP;
Masanori Horie, Ibaraki-ken, JP;
Hideki Sato, Katsuta, JP;
Masayuki Tanji, Hitachi, JP;
Shigeaki Wada, Katsuta, JP;
Toshimasa Saika, Hitachiota, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Process Computer Engineering, Inc., Hitachi, JP;
Abstract
An information processing system capable of performance measurement by the use of a small amount of mounted hardware. The information processing system having central processors installed therein comprises a control circuit, and a performance measurement validation register for specifying whether a performance measurement function is valid or invalid. In a case where the validity of the measurement function has been specified by the register, the control circuit operates one loop in a duplex configuration as a performance measurement facility. At this time, counter #1-counter #3 are used as counters for totalizing performance information. On the other hand, in a case where the invalidity of the measurement function has been specified, both loops in the duplex configuration are operated as the central processors. At this time, the counter #1-the counter #3 are used as timer counters for controlling buses.