Timings[1]
                         Counts[2]        NO inode state     W/inode state
Tree           Size  files xtgs plogs    cold   hot  ucpu   cold   hot  ucpu
-------------  ----  ----- ---- -----    ----  ----  ----   ----  ----  ----
tla             4MB    451   10 1,224    0:33  0:09  8.4s   0:13  0:08  8.3s
emacs-lexbind  77MB  2,138  391    66    1:42  0:07  5.5s   0:24  0:04  3.7s

[1] cold = disk cache flushed, hot = source tree in disk cache, ucpu = user cpu
[2] files = number of source files according to `tla inventory -s'
    xtags = number of explicitly tagged files
    plogs = number of patch-logs (NOT included in `files')

tla (fresh get; has inode state):
   $ clear-disk-cache 500
   Touching 500MB of memory...done
   $ /usr/bin/time tla what-changed --diffs
   8.32user 0.52system 0:13.12elapsed 67%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (197major+2129minor)pagefaults 0swaps
   $ /usr/bin/time tla what-changed --diffs
   8.35user 0.40system 0:08.84elapsed 98%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (197major+2129minor)pagefaults 0swaps
   $ tla inventory -s | xargs du -s | nawk '{s+=$1};END{print s}'
   4980
   $ tla inventory -s | wc -l
        451
   $ tla inventory -s --tags |grep -c '        x_'
   10
   $ ls \{arch\}/\,\,inode-sigs/
   address@hidden
   $ /usr/bin/time find . -print | wc -l
   0.02user 0.06system 0:10.51elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (102major+20minor)pagefaults 0swaps
      9219
   $ /usr/bin/time find . -print | wc -l
   0.05user 0.05system 0:00.18elapsed 55%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (102major+20minor)pagefaults 0swaps
      9219
   $ /usr/bin/time find \{arch\} -print |wc -l
   0.08user 0.01system 0:00.10elapsed 84%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (101major+20minor)pagefaults 0swaps
      8681
   $ /usr/bin/time find \{arch\}/tla \{arch\}/file-utils -type f -print | wc -l
   0.00user 0.04system 0:00.54elapsed 7%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (102major+16minor)pagefaults 0swaps
      1224

tla (with inode state removed):
   $ mv \{arch\}/\,\,inode-sigs/ $l
   $ clear-disk-cache 500
   Touching 500MB of memory...done
   $ /usr/bin/time tla what-changed --diffs
   8.46user 0.72system 0:33.93elapsed 27%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (197major+2066minor)pagefaults 0swaps
   $ /usr/bin/time tla what-changed --diffs
   8.41user 0.52system 0:09.04elapsed 98%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (197major+2066minor)pagefaults 0swaps
   $ tla inventory -s | xargs du -s | nawk '{s+=$1};END{print s}'
   4980
   $ tla inventory -s | wc -l
       451
   $ tla inventory -s --tags |grep -c '        x_'
   10
   $ ls \{arch\}/\,\,inode-sigs/
   ls: {arch}/,,inode-sigs/: No such file or directory

tla (has inode state from previous commit):
   $ clear-disk-cache 512
   Touching 512MB of memory...done
   $ /usr/bin/time tla what-changed --diffs
   8.41user 0.58system 0:10.14elapsed 88%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (197major+2159minor)pagefaults 0swaps
   $ /usr/bin/time tla what-changed --diffs
   8.58user 0.33system 0:09.01elapsed 98%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (197major+2159minor)pagefaults 0swaps
   $ tla inventory -s | xargs du -s | nawk '{s+=$1};END{print s}'
   4980
   $ tla inventory -s | wc -l
       451
   $ tla inventory -s --tags |grep -c '        x_'
   10
   $ ls \{arch\}/\,\,inode-sigs/
   address@hidden
   address@hidden
   address@hidden

emacs-lexbind (has inode state from previous commit):
   $ clear-disk-cache 500
   Touching 500MB of memory...done
   $ /usr/bin/time tla what-changed --diffs
   3.65user 0.94system 0:23.63elapsed 19%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (198major+2099minor)pagefaults 0swaps
   $ /usr/bin/time tla what-changed --diffs
   3.81user 0.54system 0:04.45elapsed 97%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (198major+2099minor)pagefaults 0swaps
   $ tla inventory -s | xargs du -s | nawk '{s+=$1};END{print s}'
   79604
   $ tla inventory -s | wc -l
      2138
   $ tla inventory -s --tags |grep -c '      x_'
   391
   $ ls \{arch\}/\,\,inode-sigs/
   address@hidden
   $ /usr/bin/time find . -print | wc -l
   0.04user 0.03system 0:03.67elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (102major+19minor)pagefaults 0swaps
      6658
   $ /usr/bin/time find . -print | wc -l
   0.04user 0.00system 0:00.05elapsed 67%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (102major+19minor)pagefaults 0swaps
      6658
   $ /usr/bin/time find \{arch\} -print | wc -l
   0.02user 0.00system 0:00.09elapsed 21%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (101major+19minor)pagefaults 0swaps
      2881
   $ /usr/bin/time find \{arch\}/emacs -type f -print | wc -l
   0.00user 0.00system 0:00.00elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (101major+15minor)pagefaults 0swaps
	66

emacs-lexbind (with inode state removed):
   $ mv \{arch\}/\,\,inode-sigs/ $l
   $ clear-disk-cache 500
   Touching 500MB of memory...done
   $ /usr/bin/time tla what-changed --diffs
   5.54user 2.07system 1:41.76elapsed 7%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (198major+1991minor)pagefaults 0swaps
   $ /usr/bin/time tla what-changed --diffs
   5.57user 1.25system 0:06.91elapsed 98%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (198major+1991minor)pagefaults 0swaps
   $ tla inventory -s | xargs du -s | nawk '{s+=$1};END{print s}'
   79604
   $ tla inventory -s | wc -l
      2138
   $ tla inventory -s --tags |grep -c '      x_'
   391
   $ ls \{arch\}/\,\,inode-sigs/
   ls: {arch}/,,inode-sigs/: No such file or directory

emacs-tiling (has no inode state):
   $ clear-disk-cache 500
   Touching 500MB of memory...done
   $ /usr/bin/time tla what-changed --diffs
   5.24user 2.27system 1:41.99elapsed 7%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (198major+1991minor)pagefaults 0swaps
   $ /usr/bin/time tla what-changed --diffs
   5.39user 1.33system 0:07.33elapsed 91%CPU (0avgtext+0avgdata 0maxresident)k
   0inputs+0outputs (198major+1991minor)pagefaults 0swaps
   $ tla inventory -s | xargs du -s | nawk '{s+=$1};END{print s}'
   78572
   $ tla inventory -s | wc -l
      2133
   $ tla inventory -s --tags |grep -c '      x_'
   390
   $ ls \{arch\}/\,\,inode-sigs/
   ls: {arch}/,,inode-sigs/: No such file or directory


[tla parent]
$ /usr/bin/time diff -r -x{arch} emacs-{tiling,lexbind} > /dev/null
Command exited with non-zero status 2
2.57user 1.88system 0:44.31elapsed 10%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (162major+23833minor)pagefaults 0swaps
$ /usr/bin/time diff -r -x{arch} emacs-{tiling,lexbind} > /dev/null
Command exited with non-zero status 2
2.41user 1.58system 0:04.10elapsed 97%CPU (0avgtext+0avgdata 0maxresident)k
0inputs+0outputs (162major+23833minor)pagefaults 0swaps