NFA 3 times slower, syntime doesn't help

[David Fishburn]

NFA engine takes almost three times (300 vs 107 seconds) as long to
complete my plugin task.

:ver
VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Oct 11 2013 09:03:38)
MS-Windows 32-bit GUI version with OLE support
Included patches: 1-52

My SQLUtilities plugin reformats SQL statements, through the use of many
regular expressions using:
:s///
substitute()
synID()
syncIDtrans()
search()

I thought I would use :syntime to help identify what expressions were
causing issues, but the results do not help me much.  I am also not certain
if perhaps I an running things correctly to help identify where the issue
might be.

Basically, I do the following:
:set re=x
:syntime on
my plugin call
:syntime report
paste to this email.

:set re=x
:syntime clear
my plugin call
:syntime report
paste to this email.


Here are the results:

:set re=0

With :syntime off, this takes 3 minute and 20 seconds.

  TOTAL      COUNT  MATCH   SLOWEST     AVERAGE   NAME               PATTERN
  0.148406   2095   60      0.001223    0.000071  sqlNumber
 -\=\<\d*\.\=[0-9_]\>
  0.014026   2035   0       0.000142    0.000007  sqlDashComment     --
  0.013963   2035   0       0.000078    0.000007  sqlMultiComment    /\*
  0.013940   2095   60      0.000152    0.000007  sqlString          '
  0.013811   2035   0       0.000200    0.000007  sqlSlashComment    \/\/
  0.002153   16919  16253   0.000002    0.000000  sqlString          "
  0.001525   7521   7521    0.000008    0.000000  sqlString          "
  0.000007   36     36      0.000000    0.000000  sqlString          '

  0.207830   34771


:set re=1

With :syntime off, this takes 1 minute and 47 seconds.

  TOTAL      COUNT  MATCH   SLOWEST     AVERAGE   NAME               PATTERN
  0.295036   4295   120     0.001223    0.000069  sqlNumber
 -\=\<\d*\.\=[0-9_]\>
  0.065744   4965   795     0.001454    0.000013  sqlString          '
  0.028317   4175   0       0.000233    0.000007  sqlDashComment     --
  0.028185   4175   0       0.000199    0.000007  sqlMultiComment    /\*
  0.027620   4175   0       0.000200    0.000007  sqlSlashComment    \/\/
  0.004863   34883  33451   0.000263    0.000000  sqlString          "
  0.003288   15763  15763   0.000012    0.000000  sqlString          "
  0.000011   72     72      0.000000    0.000000  sqlString          '

  0.453065   72503


I don't even see many of the regexp expressions I used.  Given I am
formatting SQL statements, I am searching for many SQL keywords, (SELECT,
INSERT, UPDATE, DELETE, ...) and I don't see those words even referenced in
the syntime report output.

Thanks for any input.

David

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