* Frederic Weisbecker <fweisbec@xxxxxxxxx> wrote: > Hi, > > This reiserfs patchset applies against latest tip:core/kill-the-BKL > It adds various explicit write lock releases on specific sleeping sections. > > A performance test with dbench on UP with 100 processus during 100 seconds > gives the following results: > > Locking Throughput > > Bkl: 11.2587 MB/s > Write lock/Mutex: 12.5713 MB/s > > So the new locking scheme makes it 11% faster than with the bkl. Wow, nice! > It's not possible to compare it on the kill-the-BKL tree because the Bkl > is not anymore a Bkl inside but a plain Mutex. > > Instead, you can apply the following equivalent patch against -rc3 to test it: > http://www.kernel.org/pub/linux/kernel/people/frederic/reiserfs-kill-the-bkl-full.patch > > Of course it might eat your data, make you cows produce black milk, bring coffee > to your children at 3:00 am, turn the teletubbies song in your mind for > seven years long and so... > > Frederic. > > The following changes since commit a3a2b793d18bc068b79508e96eba33ae2326f759: > Alessio Igor Bogani (1): > remove the BKL: remove "BKL auto-drop" assumption from ext3_remount() > > are available in the git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git bkl > > Frederic Weisbecker (6): > kill-the-BKL/reiserfs: release write lock on fs_changed() > kill-the-BKL/reiserfs: release the write lock before rescheduling on do_journal_end() > kill-the-BKL/reiserfs: release write lock while rescheduling on prepare_for_delete_or_cut() > kill-the-BKL/reiserfs: release the write lock inside get_neighbors() > kill-the-BKL/reiserfs: release the write lock inside reiserfs_read_bitmap_block() > kill-the-BKL/reiserfs: release the write lock on flush_commit_list() > > fs/reiserfs/bitmap.c | 2 ++ > fs/reiserfs/fix_node.c | 4 ++++ > fs/reiserfs/journal.c | 9 +++++++-- > fs/reiserfs/stree.c | 2 ++ > include/linux/reiserfs_fs.h | 8 +++++++- > 5 files changed, 22 insertions(+), 3 deletions(-) I've pulled it and have also merged -rc4 into the kill-the-BKL tree, which can picked up from here: git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git core/kill-the-BKL So for comparative benchmarking, vanilla v2.6.30-rc4 (which has the BKL) can be compared against latest kill-the-BKL. Ingo -- To unsubscribe from this list: send the line "unsubscribe reiserfs-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
