Methods and apparatus for accessing trace data

Details Methods and apparatus for accessing trace data Methods and apparatus for accessing trace data

2007-08-21

2007-08-21

Lane, Jack (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C710S018000, C714S045000, C717S128000

Reexamination Certificate

active

10978505

ABSTRACT:
A system provides mechanisms and techniques to retrieve trace data from a trace buffer residing in a data storage system. The software program operating on a processor within the data storage system operates in trace mode to produce trace data in the trace buffer upon occurrence of trace events. An event trace routine operates in response to a system call to access the trace buffer and return either a current value of a trace buffer pointer or the current trace buffer pointer as well as trace data read from the trace buffer beginning at a location and in an amount as specified in the system call to the event trace routine. The trace capture process can operate either within the data storage system or preferably on a remote host computer system to access trace data in the trace buffer in the data storage system by using the event trace routine. The trace capture process can periodically query the event trace routine with a frequency determined by an adaptive timing algorithm in order to detect the addition of trace data to the trace buffer. Upon detecting such a condition, the trace capture process can use the event trace routine to retrieve the trace data from the trace buffer. The trace capture process can also detect if trace data is written beyond the end of the trace buffer and can perform the proper sequence of trace data access operations using the event trace routine in order to provide continuous remote access to all trace data produced in the trace buffer.

REFERENCES:
patent: 5560036 (1996-09-01), Yoshida
patent: 5918252 (1999-06-01), Chen et al.
patent: 6366325 (2002-04-01), Wang
patent: 6397318 (2002-05-01), Peh
patent: 6732307 (2004-05-01), Edwards
patent: 2002/0075399 (2002-06-01), Nemiroff et al.
patent: 2002/0138788 (2002-09-01), Yenne et al.

Affiliated with

Also associated with

Rating

Methods and apparatus for accessing trace data does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and apparatus for accessing trace data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for accessing trace data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3894884