Messages in this thread | | | Date | Thu, 27 Aug 2009 13:36:31 -0400 (EDT) | From | Steven Rostedt <> | Subject | Re: FTRACE: regression in 31-rc7 |
| |
On Thu, 27 Aug 2009, Gregory Haskins wrote:
> Hi Steve, > > Steven Rostedt wrote: > instrumented for some reason. > > > > Hmm, so you think something with the modules broke? I can test that out > > here. > > Thats my (admittedly fairly ignorant) theory based on the limited data > samples I have in front of me. :) > > If I get a chance later, I will try to do something more scientific, or > at least a bisect.
I just did this:
# uname -r 2.6.31-rc7 # echo :mod:ext3 > set_ftrace_filter # echo function_graph > current_tracer # cat trace # tracer: function_graph # # CPU DURATION FUNCTION CALLS # | | | | | | | 1) 6.928 us | ext3_permission(); 1) 1.234 us | ext3_permission(); ------------------------------------------ 1) gdm-bin-3477 => pcscd-2951 ------------------------------------------
1) 1.306 us | ext3_permission(); 1) 1.314 us | ext3_permission(); 1) 1.244 us | ext3_permission(); 1) 1.364 us | ext3_permission(); 1) 1.251 us | ext3_permission(); 1) 1.473 us | ext3_permission(); 1) 1.306 us | ext3_permission(); 1) 1.401 us | ext3_permission(); 1) 1.243 us | ext3_permission(); 1) 1.301 us | ext3_permission(); 1) 1.439 us | ext3_permission(); 1) 1.239 us | ext3_permission(); 1) 1.331 us | ext3_permission(); 1) 1.423 us | ext3_permission(); 1) 1.243 us | ext3_permission(); 1) 1.321 us | ext3_permission(); ------------------------------------------ 1) pcscd-2951 => gdm-bin-3477 ------------------------------------------
1) 2.567 us | ext3_permission(); 1) 1.139 us | ext3_permission(); 1) 2.329 us | ext3_permission(); 1) 1.246 us | ext3_permission(); 1) 1.321 us | ext3_permission(); 1) 0.989 us | ext3_permission(); 1) 1.261 us | ext3_permission(); 1) 1.209 us | ext3_permission(); 1) 1.221 us | ext3_permission(); 1) 0.968 us | ext3_permission(); 1) 2.319 us | ext3_permission(); 1) 1.221 us | ext3_permission(); 1) 2.199 us | ext3_permission(); 1) 1.269 us | ext3_permission(); ------------------------------------------ 1) gdm-bin-3477 => bash-3198 ------------------------------------------
1) 2.852 us | ext3_permission(); 1) | ext3_readdir() { 1) 1.249 us | free_rb_tree_fname(); 1) | ext3_htree_fill_tree() { 1) | htree_dirblock_to_tree() { 1) | ext3_bread() { 1) | ext3_getblk() { 1) | ext3_get_blocks_handle() { 1) 1.046 us | ext3_block_to_path();
This is with the latest Linus git:
commit 1e23502cc57cef33455ac7cb9111e3c6d991a894 Merge: e99b1f2... 3161e45... Author: Linus Torvalds <torvalds@linux-foundation.org> Date: Wed Aug 26 20:54:48 2009 -0700
-- Steve
| |