发明名称 |
METHOD AND SYSTEM FOR ADAPTIVE BACK-OFF AND ADVANCE FOR NON-VOLATILE STORAGE (NVS) OCCUPANCY LEVEL MANAGEMENT |
摘要 |
A technique for determining when to destage write data from a fast, NVS of a computer system from an upper level to a lower level of storage in the computer system comprises adaptively varying a destage rate of the NVS according to a current storage occupancy of the NVS; maintaining a high threshold level for the NVS; maintaining a low threshold level that is set to be a predetermined fixed amount below the high threshold; setting the destage rate of the NVS to zero when the NVS occupancy is below the low threshold; setting the destage rate of the NVS to be maximum when the NVS occupancy is above the high threshold; linearly increasing the destage rate of the NVS from zero to maximum as the NVS occupancy goes from the low to the high threshold; and adaptively varying the high threshold in response to a dynamic computer storage workload.
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申请公布号 |
US2008126708(A1) |
申请公布日期 |
2008.05.29 |
申请号 |
US20080026569 |
申请日期 |
2008.02.06 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
GILL BINNY S.;MODHA DHARMENDRA S. |
分类号 |
G06F12/08 |
主分类号 |
G06F12/08 |
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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