Changes between Version 20 and Version 21 of VDEchp


Ignore:
Timestamp:
10/05/11 01:40:55 (13 years ago)
Author:
lvpeng
Comment:

--

Legend:

Unmodified
Added
Removed
Modified

  • VDEchp

    v20 v21  
    1515[[Image(figure1.jpg)]]
    1616
    17                     Figure 1. Execution cases under VDEchp.
     17         Figure 1. Execution cases under VDEchp.
    1818
    1919In the VDEchp design, for each VM, the state of its stable copy is always one checkpoint interval behind the current VM’s state except the initial state. This means that, when a new checkpoint is generated, it is not copied to the stable copy immediately. Instead, the last checkpoint is copied to the stable copy. The reason is that, there is a latency between when an error occurs and when the failure caused by this error is detected.