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10 dynamically allocated RAM-based memory pool. zswap basically trades CPU cycles
11 for potentially reduced swap I/O. This trade-off can also result in a
21 throttling by the hypervisor. This allows more work to get done with less
24 drastically reducing life-shortening writes.
65 achieved with a red-black tree per swap type. The swap offset is the search
79 * max_pool_percent - The maximum percentage of memory that the compressed
90 When the compressor parameter is changed at runtime, any existing compressed
96 Some of the pages in zswap are same-value filled pages (i.e. contents of the
97 page have same value or repetitive pattern). These pages include zero-filled
99 checked if it is a same-value filled page before compressing it. If true, the
100 compressed length of the page is set to zero and the pattern or same-filled
106 special parameter has been introduced to implement a sort of hysteresis to
114 Setting this parameter to 100 will disable the hysteresis.
118 zswap itself) on a cgroup-basis as follows::
120 echo 0 > /sys/fs/cgroup/<cgroup-name>/memory.zswap.writeback
137 of pages stored, same-value filled pages and various counters for the reasons