发明名称 |
Method and Apparatus for Establishing a Bound on the Effect of Task Interference in a Cache Memory |
摘要 |
A method and apparatus are disclosed for establishing a bound on the effect of task interference in an instruction cache shared by multiple tasks. The bound established by the present invention is the maximum number of "live" frames of a given task that are coexistent during the execution of an application. A "live cache frame" contains a block that is accessed in the future without an intervening eviction. The eviction of blocks from a live frame by an interrupt causes a future miss that would not otherwise occur and evictions from live frames are the only evictions that cause misses that would not otherwise occur. The invention provides a more accurate estimate of the maximum additional execution time of a task that results from servicing an interrupt during its execution. Additional accuracy is obtained by exploiting knowledge of the character of an intervening task to achieve a tighter bound, when possible. |
申请公布号 |
US2008196036(A1) |
申请公布日期 |
2008.08.14 |
申请号 |
US20080027683 |
申请日期 |
2008.02.07 |
申请人 |
AGERE SYSTEMS INC. |
发明人 |
BETKER MICHAEL RICHARD;DWYER HARRY;FERNANDO JOHN SUSANTHA |
分类号 |
G06F9/46;G06F11/34;G06F12/08 |
主分类号 |
G06F9/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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