Dynamically self-adjusting polling mechanism

Details Dynamically self-adjusting polling mechanism Dynamically self-adjusting polling mechanism

2005-08-16

2005-08-16

Gaffin, Jeffrey (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output data buffering

C710S053000, C710S052000, C710S005000, C710S006000

Reexamination Certificate

active

06931460

ABSTRACT:
A system and method is disclosed for preventing the loss of event messages due to message buffer overruns. A fixed vendor-specific buffer pool is loaded with log messages by firmware in an adapter. A service application periodically polls a device driver for messages in the buffer pool. The device driver responds with the number of messages stored in the buffer pool and the total number of buffers in the buffer pool. The service application then issues “get next message” requests to receive the stored messages. Once the buffer pool has been emptied, the service application writes the messages to a disk file. The service application then computes a percent utilization of the buffer pool, and if the percent utilization exceeds a predetermined threshold, an algorithm is employed for increasing the polling frequency. If the percent utilization is below the threshold, an algorithm is employed for decreasing the polling frequency.

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patent: 6621827 (2003-09-01), Rezvani et al.
patent: 6640268 (2003-10-01), Kumar

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