Searched hist:"240799 cd" (Results 1 – 3 of 3) sorted by relevance
/openbmc/linux/fs/ext4/ |
H A D | ext4.h | 240799cd Thu Oct 09 22:53:47 CDT 2008 Theodore Ts'o <tytso@mit.edu> ext4: Use readahead when reading an inode from the inode table
With modern hard drives, reading 64k takes roughly the same time as reading a 4k block. So request readahead for adjacent inode table blocks to reduce the time it takes when iterating over directories (especially when doing this in htree sort order) in a cold cache case. With this patch, the time it takes to run "git status" on a kernel tree after flushing the caches via "echo 3 > /proc/sys/vm/drop_caches" is reduced by 21%.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> 240799cd Thu Oct 09 22:53:47 CDT 2008 Theodore Ts'o <tytso@mit.edu> ext4: Use readahead when reading an inode from the inode table With modern hard drives, reading 64k takes roughly the same time as reading a 4k block. So request readahead for adjacent inode table blocks to reduce the time it takes when iterating over directories (especially when doing this in htree sort order) in a cold cache case. With this patch, the time it takes to run "git status" on a kernel tree after flushing the caches via "echo 3 > /proc/sys/vm/drop_caches" is reduced by 21%. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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H A D | inode.c | 240799cd Thu Oct 09 22:53:47 CDT 2008 Theodore Ts'o <tytso@mit.edu> ext4: Use readahead when reading an inode from the inode table
With modern hard drives, reading 64k takes roughly the same time as reading a 4k block. So request readahead for adjacent inode table blocks to reduce the time it takes when iterating over directories (especially when doing this in htree sort order) in a cold cache case. With this patch, the time it takes to run "git status" on a kernel tree after flushing the caches via "echo 3 > /proc/sys/vm/drop_caches" is reduced by 21%.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> 240799cd Thu Oct 09 22:53:47 CDT 2008 Theodore Ts'o <tytso@mit.edu> ext4: Use readahead when reading an inode from the inode table With modern hard drives, reading 64k takes roughly the same time as reading a 4k block. So request readahead for adjacent inode table blocks to reduce the time it takes when iterating over directories (especially when doing this in htree sort order) in a cold cache case. With this patch, the time it takes to run "git status" on a kernel tree after flushing the caches via "echo 3 > /proc/sys/vm/drop_caches" is reduced by 21%. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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H A D | super.c | 240799cd Thu Oct 09 22:53:47 CDT 2008 Theodore Ts'o <tytso@mit.edu> ext4: Use readahead when reading an inode from the inode table
With modern hard drives, reading 64k takes roughly the same time as reading a 4k block. So request readahead for adjacent inode table blocks to reduce the time it takes when iterating over directories (especially when doing this in htree sort order) in a cold cache case. With this patch, the time it takes to run "git status" on a kernel tree after flushing the caches via "echo 3 > /proc/sys/vm/drop_caches" is reduced by 21%.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> 240799cd Thu Oct 09 22:53:47 CDT 2008 Theodore Ts'o <tytso@mit.edu> ext4: Use readahead when reading an inode from the inode table With modern hard drives, reading 64k takes roughly the same time as reading a 4k block. So request readahead for adjacent inode table blocks to reduce the time it takes when iterating over directories (especially when doing this in htree sort order) in a cold cache case. With this patch, the time it takes to run "git status" on a kernel tree after flushing the caches via "echo 3 > /proc/sys/vm/drop_caches" is reduced by 21%. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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