Method and system for measuring availability in a distributed ne

Details Method and system for measuring availability in a distributed ne Method and system for measuring availability in a distributed ne

1995-11-20

1998-08-04

Trammell, James P.

Boots, shoes, and leggings

39520056, 395674, G04F 700

Patent

active

057904316

ABSTRACT:
A method and apparatus for determining the availability of a workstation in a distributed network. Availability is determined using an Availability Measurement System having a Downtime unit, an Availability Disable unit, and a Calculation unit. During the initialization of the workstation, a heartbeat monitor daemon is created to store, at predetermined time intervals, timestamps of the network. Once the workstation becomes unavailable, the recording of the timestamps ceases, thus, allowing an accurate representation of when the workstation became unavailable. Upon the return of the workstation to the status of available, the Downtime unit reads the current time of the network and the stored timestamp to calculate the duration of the unavailability of the workstation. The duration is then stored for later calculation of availability of the workstation for a defined interval of time using the Calculation unit. The Availability Measurement System may be disabled using the Availability Disable unit, thus, allowing selected durations of unavailability to be excluded from an availability calculation.

REFERENCES:
patent: 4800488 (1989-01-01), Agrawal et al.
patent: 5089958 (1992-02-01), Horton et al.
patent: 5123017 (1992-06-01), Simpkins et al.
patent: 5317568 (1994-05-01), Bixby et al.
patent: 5345584 (1994-09-01), Hill
patent: 5414845 (1995-05-01), Behm et al.
patent: 5471622 (1995-11-01), Eadline
patent: 5548722 (1996-08-01), Jalalian et al.
IBM TDB, "Distributed Transaction Commit Protocols For Highly Available Systems", vol. 26, No. 8, Jan. 1984, pp. 4250-4251.
IBM TDB, "Monitoring System For Reliability, Accessability and Serviceability", vol. 37, No. 09, Sep. 1994.

Affiliated with

Also associated with

Rating

Method and system for measuring availability in a distributed ne 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 system for measuring availability in a distributed ne, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for measuring availability in a distributed ne will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1185063