Re: 2.5.31 kmap_atomic copy_*_user benefits

From: William Lee Irwin III (wli@holomorphy.com)
Date: Thu Aug 15 2002 - 18:26:51 EST


On Thu, Aug 15, 2002 at 04:21:26PM -0700, William Lee Irwin III wrote:
> In the follow-ups I'll include oprofile numbers for each and vmstat logs.

oprofile numbers before:

c013bf64 7205865 63.7904 .text.lock.highmem
c0105394 1392984 12.3315 default_idle
c013b5cc 1013797 8.97471 kmap_high
c013b7c0 864121 7.64969 kunmap_high
c0114820 144253 1.27701 scheduler_tick
c013bcac 103670 0.917746 blk_queue_bounce
c012f250 73437 0.650106 generic_file_write
c01143d8 50347 0.4457 load_balance
c012deb0 39488 0.34957 unlock_page
c013563c 35625 0.315373 rmqueue
c01432ac 32983 0.291984 __block_prepare_write
c013b548 28023 0.248076 flush_all_zero_pkmaps
c0141bb8 17749 0.157124 __find_get_block_slow
c012dca4 15073 0.133435 add_to_page_cache
c014e7ab 8010 0.0709091 .text.lock.namei
c013428c 7957 0.0704399 lru_cache_add
c016db38 7334 0.0649248 ext2_free_branches
c016d5b0 7030 0.0622336 ext2_get_block
c012e100 6578 0.0582322 find_lock_page
c01435e8 6559 0.058064 __block_commit_write
c012e52c 6368 0.0563732 file_read_actor
c013c34c 5913 0.0523453 mempool_alloc
-
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