How to keep linux pagecache minimal?
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I want to setup Debian system with ZFS as primary filesystem and some as secondary (ntfs, ext2/4). When I'll read/write from non-ZFS filesystems pagecache will grow and will force zfs arc to shrink. I don't want this behavior. How to keep linux pagecache minimal?
/proc/sys/vm/dirty_* is for controlling dirty cache only.
/proc/sys/vm/vfs_cache_pressure is for something (I don't remember correct names) but not pagecache.
debian linux-kernel cache zfs zfs-arc
edited Nov 4 '17 at 17:04
Jeff Schaller
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asked Nov 4 '17 at 16:50
Daniil
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add a comment |Â
up vote
2
down vote
favorite
I want to setup Debian system with ZFS as primary filesystem and some as secondary (ntfs, ext2/4). When I'll read/write from non-ZFS filesystems pagecache will grow and will force zfs arc to shrink. I don't want this behavior. How to keep linux pagecache minimal?
/proc/sys/vm/dirty_* is for controlling dirty cache only.
/proc/sys/vm/vfs_cache_pressure is for something (I don't remember correct names) but not pagecache.
debian linux-kernel cache zfs zfs-arc
edited Nov 4 '17 at 17:04
Jeff Schaller
32k849109
asked Nov 4 '17 at 16:50
Daniil
113
If you do not want that the arc shrinks, set thezfs_arc_maxandzfs_arc_minto a value that makes sense for your setup.
– Thomas
Nov 4 '17 at 18:14
add a comment |Â
up vote
2
down vote
favorite
up vote
2
down vote
favorite
I want to setup Debian system with ZFS as primary filesystem and some as secondary (ntfs, ext2/4). When I'll read/write from non-ZFS filesystems pagecache will grow and will force zfs arc to shrink. I don't want this behavior. How to keep linux pagecache minimal?
/proc/sys/vm/dirty_* is for controlling dirty cache only.
/proc/sys/vm/vfs_cache_pressure is for something (I don't remember correct names) but not pagecache.
debian linux-kernel cache zfs zfs-arc
edited Nov 4 '17 at 17:04
Jeff Schaller
32k849109
asked Nov 4 '17 at 16:50
Daniil
113
I want to setup Debian system with ZFS as primary filesystem and some as secondary (ntfs, ext2/4). When I'll read/write from non-ZFS filesystems pagecache will grow and will force zfs arc to shrink. I don't want this behavior. How to keep linux pagecache minimal?
/proc/sys/vm/dirty_* is for controlling dirty cache only.
/proc/sys/vm/vfs_cache_pressure is for something (I don't remember correct names) but not pagecache.
debian linux-kernel cache zfs zfs-arc
edited Nov 4 '17 at 17:04
Jeff Schaller
32k849109
asked Nov 4 '17 at 16:50
Daniil
113
edited Nov 4 '17 at 17:04
Jeff Schaller
32k849109
edited Nov 4 '17 at 17:04
Jeff Schaller
32k849109
edited Nov 4 '17 at 17:04
Jeff Schaller
32k849109
32k849109
asked Nov 4 '17 at 16:50
Daniil
113
asked Nov 4 '17 at 16:50
Daniil
113
asked Nov 4 '17 at 16:50
Daniil
113
113
If you do not want that the arc shrinks, set thezfs_arc_maxandzfs_arc_minto a value that makes sense for your setup.
– Thomas
Nov 4 '17 at 18:14
add a comment |Â
If you do not want that the arc shrinks, set thezfs_arc_maxandzfs_arc_minto a value that makes sense for your setup.
– Thomas
Nov 4 '17 at 18:14
If you do not want that the arc shrinks, set the
zfs_arc_max and zfs_arc_min to a value that makes sense for your setup.– Thomas
Nov 4 '17 at 18:14
If you do not want that the arc shrinks, set the
zfs_arc_max and zfs_arc_min to a value that makes sense for your setup.– Thomas
Nov 4 '17 at 18:14
add a comment |Â
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If you do not want that the arc shrinks, set the
zfs_arc_maxandzfs_arc_minto a value that makes sense for your setup.– Thomas
Nov 4 '17 at 18:14