| Name | Size | Last modified (GMT) | Description | |
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| Parent directory | 2024-11-11 14:31:54 | ||
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| Makefile | 152 bytes | 2024-11-11 14:31:54 | |
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| README | 1167 bytes | 2024-11-11 14:31:54 | |
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| config | 32 bytes | 2024-11-11 14:31:54 | |
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| zram.sh | 235 bytes | 2024-11-11 14:31:54 | |
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| zram01.sh | 1976 bytes | 2024-11-11 14:31:54 | |
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| zram02.sh | 1202 bytes | 2024-11-11 14:31:54 | |
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| zram_lib.sh | 5568 bytes | 2024-11-11 14:31:54 |
1 zram: Compressed RAM based block devices 2 ---------------------------------------- 3 * Introduction 4 5 The zram module creates RAM based block devices named /dev/zram<id> 6 (<id> = 0, 1, ...). Pages written to these disks are compressed and stored 7 in memory itself. These disks allow very fast I/O and compression provides 8 good amounts of memory savings. Some of the usecases include /tmp storage, 9 use as swap disks, various caches under /var and maybe many more :) 10 11 Statistics for individual zram devices are exported through sysfs nodes at 12 /sys/block/zram<id>/ 13 14 Kconfig required: 15 CONFIG_ZRAM=y 16 CONFIG_CRYPTO_LZ4=y 17 CONFIG_ZPOOL=y 18 CONFIG_ZSMALLOC=y 19 20 ZRAM Testcases 21 -------------- 22 zram_lib.sh: create library with initialization/cleanup functions 23 zram.sh: For sanity check of CONFIG_ZRAM and to run zram01 and zram02 24 25 Two functional tests: zram01 and zram02: 26 zram01.sh: creates general purpose ram disks with ext4 filesystems 27 zram02.sh: creates block device for swap 28 29 Commands required for testing: 30 - bc 31 - dd 32 - free 33 - awk 34 - mkswap 35 - swapon 36 - swapoff 37 - mkfs/ mkfs.ext4 38 39 For more information please refer: 40 kernel-source-tree/Documentation/admin-guide/blockdev/zram.rst
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