发明名称 |
System and method for dynamically adjusting read ahead values based upon memory usage |
摘要 |
A system and method for dynamically altering a Virtual Memory Manager (VMM) Sequential-Access Read Ahead settings based upon current system memory conditions is provided. Normal VMM operations are performed using the Sequential-Access Read Ahead values set by the user. When low memory is detected, the system either turns off Sequential-Access Read Ahead operations or decreases the maximum page ahead (maxpgahead) value based upon whether the amount of free space is simply low or has reached a critically low level. The altered VMM Sequential-Access Read Ahead state remains in effect until enough free space is available so that normal VMM Sequential-Access Read Ahead operations can be performed (at which point the altered Sequential-Access Read Ahead values are reset to their original levels).
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申请公布号 |
US7318142(B2) |
申请公布日期 |
2008.01.08 |
申请号 |
US20060463100 |
申请日期 |
2006.08.08 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
ACCAPADI JOS MANUEL;DUNSHEA ANDREW;LI LI;NEUMAN GROVER HERBERT;SRINIVAS MYSORE SATHYANARAYANA;HEPKIN DAVID ALAN |
分类号 |
G06F12/06;G06F12/00;G06F12/08 |
主分类号 |
G06F12/06 |
代理机构 |
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主权项 |
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地址 |
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