The Coherency Parameters Tab is shown in the following figures.
Note: This tab is only
shown when ACE, CCIX or CHI Master Coherency is enabled.
Figure 1. Coherency Parameters Tab with ACE Coherency Protocol
- Support Downstream Snoop Filter
- Generate transactions to support a downstream snoop filter to improve performance.
- Keep After
- Preference is to keep the allocation in the cache after a snoop of the indicated type. This may increase performance, but it is application dependent.
- Pass Dirty After
- Always pass write responsibility with data for a snoop of the indicated type. This may increase performance, but it is application dependent.
- Default Sharability Domain
- Set default sharability domain to Inner or Outer. Only available with ACE master coherency protocol.
Figure 2. Coherency Parameters Tab with CCIX Coherency Protocol
- Support Downstream Snoop Filter
- Generate transactions to support a downstream snoop filter to improve performance.
- Keep After
- Preference is to keep the allocation in the cache after a snoop of the indicated type. This may increase performance, but it is application dependent.
- Pass Dirty After
- Always pass write responsibility with data for a snoop of the indicated type. This may increase performance, but it is application dependent.
Figure 3. Coherency Parameters Tab with CHI Coherency Protocol
- Support Downstream Snoop Filter
- Generate transactions to support a downstream snoop filter to improve performance.
- Keep After
- Preference is to keep the allocation in the cache after a snoop of the indicated type. This may increase performance, but it is application dependent.
- Pass Dirty After
- Always pass write responsibility with data for a snoop of the indicated type. This may increase performance, but it is application dependent.