Seem to loose about 2-3% on SDET syncing with 2.5.68. Not much change
apart from 67-68 changes. The merge of the ext2 alloc stuff has made
such a dramatic improvment for virgin 67-68, it's hard to see if
there was any degredation in mainline ;-) I had those in my tree before
though, so there should be much less change.
Just wondering if you can recognise / guess the problem from the profiles,
else I'll poke at it some more (will probably just work out what's hitting
.text.lock.filemap).
diffprofile {2.5.67-mjb2,2.5.68-mjb1}/sdetbench/128/profile
1307 2.1% total
432 0.0% .text.lock.filemap
269 0.8% default_idle
148 19.4% find_get_page
99 165.0% grab_block
97 26.6% __down
85 146.6% __brelse
78 22.2% do_no_page
75 625.0% update_atime
62 5.6% __d_lookup
61 103.4% task_mem
42 25.5% __wake_up
39 52.7% __mark_inode_dirty
38 211.1% read_inode_bitmap
32 0.0% group_reserve_blocks
31 79.5% generic_fillattr
...
-10 -6.0% kmap_atomic
-11 -26.8% truncate_inode_pages
-12 -26.1% ext2_free_blocks
-12 -5.2% do_page_fault
-13 -7.8% .text.lock.file_table
-13 -11.1% proc_check_root
-14 -19.7% dentry_open
-17 -4.1% .text.lock.namei
-17 -17.2% fget
-18 -10.3% .text.lock.attr
-21 -12.1% number
-24 -4.3% .text.lock.dcache
-27 -2.1% page_remove_rmap
-34 -54.8% ext2_new_block
-36 -3.4% atomic_dec_and_lock
-37 -3.1% copy_page_range
-57 -7.6% __copy_to_user_ll
-105 -95.5% task_vsize
-113 -96.6% find_trylock_page
-
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This archive was generated by hypermail 2b29 : Wed Apr 23 2003 - 22:00:30 EST