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| author | Rick Macklem <rmacklem@FreeBSD.org> | 2021-01-03 01:21:21 +0000 |
|---|---|---|
| committer | Rick Macklem <rmacklem@FreeBSD.org> | 2021-01-03 01:21:21 +0000 |
| commit | d189a74dfdcd4a89c92a48ecbf8fcb6f6903f9b6 (patch) | |
| tree | d24792d2a5dc9fa3fec2768746b98857632f24c0 /sys/fs | |
| parent | c98a764c681f8b70812a9f13a6e61c96aa1a69d2 (diff) | |
| download | src-d189a74dfdcd4a89c92a48ecbf8fcb6f6903f9b6.tar.gz src-d189a74dfdcd4a89c92a48ecbf8fcb6f6903f9b6.zip | |
copy_file_range(2): add recommendation to use large "len"
PR#252358 reported a serious performance problem w.r.t.
cp(1) when copying large non-sparse files.
This problem appears to have been caused by cp(1)
calling copy_file_range(2) with a small "len" argument.
This patch adds a recommendation to use a large "len"
value where possible, for performance reasons.
Reviewed by: asomers
Differential Revision: https://reviews.freebsd.org/D27935
Diffstat (limited to 'sys/fs')
0 files changed, 0 insertions, 0 deletions