| What: /sys/module/xen_blkback/parameters/max_buffer_pages |
| Date: March 2013 |
| KernelVersion: 3.11 |
| Contact: Roger Pau Monné <roger.pau@citrix.com> |
| Description: |
| Maximum number of free pages to keep in each block |
| backend buffer. |
| |
| What: /sys/module/xen_blkback/parameters/max_persistent_grants |
| Date: March 2013 |
| KernelVersion: 3.11 |
| Contact: Roger Pau Monné <roger.pau@citrix.com> |
| Description: |
| Maximum number of grants to map persistently in |
| blkback. If the frontend tries to use more than |
| max_persistent_grants, the LRU kicks in and starts |
| removing 5% of max_persistent_grants every 100ms. |