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. |