| Nitin Gupta | 16a4bfb | 2010-06-01 13:31:24 +0530 | [diff] [blame] | 1 | config ZRAM |
| 2 | tristate "Compressed RAM block device support" |
| Randy Dunlap | 8946a08 | 2010-06-23 20:27:09 -0700 | [diff] [blame] | 3 | depends on BLOCK |
| Nitin Gupta | 16a4bfb | 2010-06-01 13:31:24 +0530 | [diff] [blame] | 4 | select LZO_COMPRESS |
| 5 | select LZO_DECOMPRESS |
| 6 | default n |
| 7 | help |
| 8 | Creates virtual block devices called /dev/zramX (X = 0, 1, ...). |
| 9 | Pages written to these disks are compressed and stored in memory |
| 10 | itself. These disks allow very fast I/O and compression provides |
| 11 | good amounts of memory savings. |
| 12 | |
| 13 | It has several use cases, for example: /tmp storage, use as swap |
| 14 | disks and maybe many more. |
| 15 | |
| 16 | See zram.txt for more information. |
| 17 | Project home: http://compcache.googlecode.com/ |
| 18 | |
| 19 | config ZRAM_STATS |
| 20 | bool "Enable statistics for compressed RAM disks" |
| 21 | depends on ZRAM |
| 22 | default y |
| 23 | help |
| 24 | Enable statistics collection for compressed RAM devices. Statistics |
| 25 | are exported through ioctl interface, so you have to use zramconfig |
| 26 | program to get them. This adds only a minimal overhead. |
| 27 | |
| 28 | If unsure, say Y. |
| 29 | |