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- What: /sys/block/zram<id>/disksize
- Date: August 2010
- Contact: Nitin Gupta <ngupta@vflare.org>
- Description:
- The disksize file is read-write and specifies the disk size
- which represents the limit on the *uncompressed* worth of data
- that can be stored in this disk.
- What: /sys/block/zram<id>/initstate
- Date: August 2010
- Contact: Nitin Gupta <ngupta@vflare.org>
- Description:
- The disksize file is read-only and shows the initialization
- state of the device.
- What: /sys/block/zram<id>/reset
- Date: August 2010
- Contact: Nitin Gupta <ngupta@vflare.org>
- Description:
- The disksize file is write-only and allows resetting the
- device. The reset operation frees all the memory assocaited
- with this device.
- What: /sys/block/zram<id>/num_reads
- Date: August 2010
- Contact: Nitin Gupta <ngupta@vflare.org>
- Description:
- The num_reads file is read-only and specifies the number of
- reads (failed or successful) done on this device.
- What: /sys/block/zram<id>/num_writes
- Date: August 2010
- Contact: Nitin Gupta <ngupta@vflare.org>
- Description:
- The num_writes file is read-only and specifies the number of
- writes (failed or successful) done on this device.
- What: /sys/block/zram<id>/invalid_io
- Date: August 2010
- Contact: Nitin Gupta <ngupta@vflare.org>
- Description:
- The invalid_io file is read-only and specifies the number of
- non-page-size-aligned I/O requests issued to this device.
- What: /sys/block/zram<id>/notify_free
- Date: August 2010
- Contact: Nitin Gupta <ngupta@vflare.org>
- Description:
- The notify_free file is read-only and specifies the number of
- swap slot free notifications received by this device. These
- notifications are send to a swap block device when a swap slot
- is freed. This statistic is applicable only when this disk is
- being used as a swap disk.
- What: /sys/block/zram<id>/discard
- Date: August 2010
- Contact: Nitin Gupta <ngupta@vflare.org>
- Description:
- The discard file is read-only and specifies the number of
- discard requests received by this device. These requests
- provide information to block device regarding blocks which are
- no longer used by filesystem.
- What: /sys/block/zram<id>/zero_pages
- Date: August 2010
- Contact: Nitin Gupta <ngupta@vflare.org>
- Description:
- The zero_pages file is read-only and specifies number of zero
- filled pages written to this disk. No memory is allocated for
- such pages.
- What: /sys/block/zram<id>/orig_data_size
- Date: August 2010
- Contact: Nitin Gupta <ngupta@vflare.org>
- Description:
- The orig_data_size file is read-only and specifies uncompressed
- size of data stored in this disk. This excludes zero-filled
- pages (zero_pages) since no memory is allocated for them.
- Unit: bytes
- What: /sys/block/zram<id>/compr_data_size
- Date: August 2010
- Contact: Nitin Gupta <ngupta@vflare.org>
- Description:
- The compr_data_size file is read-only and specifies compressed
- size of data stored in this disk. So, compression ratio can be
- calculated using orig_data_size and this statistic.
- Unit: bytes
- What: /sys/block/zram<id>/mem_used_total
- Date: August 2010
- Contact: Nitin Gupta <ngupta@vflare.org>
- Description:
- The mem_used_total file is read-only and specifies the amount
- of memory, including allocator fragmentation and metadata
- overhead, allocated for this disk. So, allocator space
- efficiency can be calculated using compr_data_size and this
- statistic.
- Unit: bytes
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