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| -rw-r--r-- | NEWS | 5 | ||||
| -rw-r--r-- | src/split.c | 4 |
2 files changed, 9 insertions, 0 deletions
@@ -27,6 +27,11 @@ GNU coreutils NEWS -*- outline -*- due to -i, or -u. Instead they only output this information with --debug. I.e., 'cp -u -v' etc. will have the same verbosity as before coreutils-9.3. +** Improvements + + split now uses more tuned access patterns for its potentially large input. + This was seen to improve throughput by 5% when reading from SSD. + * Noteworthy changes in release 9.3 (2023-04-18) [stable] diff --git a/src/split.c b/src/split.c index d872ec56a..09209cc5a 100644 --- a/src/split.c +++ b/src/split.c @@ -32,6 +32,7 @@ #include "alignalloc.h" #include "die.h" #include "error.h" +#include "fadvise.h" #include "fd-reopen.h" #include "fcntl--.h" #include "full-write.h" @@ -1621,6 +1622,9 @@ main (int argc, char **argv) /* Binary I/O is safer when byte counts are used. */ xset_binary_mode (STDIN_FILENO, O_BINARY); + /* Advise the kernel of our access pattern. */ + fdadvise (STDIN_FILENO, 0, 0, FADVISE_SEQUENTIAL); + /* Get the optimal block size of input device and make a buffer. */ if (fstat (STDIN_FILENO, &in_stat_buf) != 0) |