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| author |   Kuanling Huang <peterh@synology.com> | 2017-09-15 16:47:45 +0800 |
|---|---|---|
| committer |   David Sterba <dsterba@suse.com> | 2017-10-30 12:27:57 +0100 |
| commit | eef16ba269ea1d55ca1b4eab8d91f02e185835c9 (patch) | |
| tree | f7293754eb9652741d9516475d6282716efcc938 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | Btrfs: fix memory leak in raid56 (diff) | |
| download | wireguard-linux-eef16ba269ea1d55ca1b4eab8d91f02e185835c9.tar.xz wireguard-linux-eef16ba269ea1d55ca1b4eab8d91f02e185835c9.zip | |
Btrfs: send, apply asynchronous page cache readahead to enhance page read
By analyzing the perf on btrfs send, we found it take large amount of
cpu time on page_cache_sync_readahead. This effort can be reduced after
switching to asynchronous one. Overall performance gain on HDD and SSD
were 9 and 15 percent if simply send a large file.
Signed-off-by: Kuanling Huang <peterh@synology.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions