ECHO is very slow

May 20, 2008
9,344
62
Syracuse, NY, USA
This just started happening in the last few days.

Here's v20.
Code:
v:\> timer & do i=1 to 1000 ( echo %i > nul ) & timer
Timer 1 on: 02:32:48
Timer 1 off: 02:32:48  Elapsed: 0:00:00.36
Here's v21.
Code:
v:\> timer & do i=1 to 1000 ( echo %i > nul ) & timer
Timer 1 on: 02:32:53
Timer 1 off: 02:33:00  Elapsed: 0:00:06.99
Without the "> nul" the difference is still great ... .78 vs 8.75.

Here's another one. v20:
Code:
v:\> timer & do f in * ( echo %f > nul ) & timer
Timer 1 on: 02:42:55
Timer 1 off: 02:42:55  Elapsed: 0:00:00.02
v21:
Code:
v:\> timer & do f in * ( echo %f > nul ) & timer
Timer 1 on: 02:42:51
Timer 1 off: 02:42:52  Elapsed: 0:00:00.33
The difference is even more exaggerated in a FOR loop.
Code:
timer & for %f in (*) do echo %f & timer
.04 for v20; 5.73 for v21
 
May 20, 2008
9,344
62
Syracuse, NY, USA
Another:
Code:
v:\> g:\tc21\tcc /c `timer & echo foo > NUL & echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &ech
o foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo
 foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo
foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo f
oo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL & timer`

Timer 1 on: 03:03:32
Timer 1 off: 03:03:32  Elapsed: 0:00:00.30

v:\> g:\tc20\tcc /c `timer & echo foo > NUL & echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &ech
o foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo
 foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo
foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo f
oo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL &echo foo > NUL & timer`

Timer 1 on: 03:03:37
Timer 1 off: 03:03:37  Elapsed: 0:00:00.06
 
May 20, 2008
9,344
62
Syracuse, NY, USA
Another:
Code:
v:\> g:\tc20\tcc.exe `timer & echos x & echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& e
chos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos
x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& ec
hos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x
& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x & timer`

Timer 1 on: 03:09:11
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxTimer 1 off: 03:09:11  Elapsed: 0:00:00.08

v:\> g:\tc21\tcc.exe `timer & echos x & echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& e
chos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos
x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& ec
hos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x
& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x& echos x & timer`

Timer 1 on: 03:09:20
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxTimer 1 off: 03:09:21  Elapsed: 0:00:00.64
 

rconn

Administrator
Staff member
May 14, 2008
10,988
98
Not reproducible here:

Code:
[C:\Program Files\JPSoft\TCMD20]timer & do i=1 to 1000 ( echo %i > nul ) & timer
Timer 1 on:  9:30:13
Timer 1 off:  9:30:13  Elapsed: 0:00:00.16
Code:
[C:\Program Files\JPSoft\TCMD21]timer & do i=1 to 1000 ( echo %i > nul ) & timer
Timer 1 on:  9:30:32
Timer 1 off:  9:30:32  Elapsed: 0:00:00.19
Nothing changed in ECHO between v20 and v21. You have something else going on in your system. Do you have the same ANSI setting in both environments?
 

rconn

Administrator
Staff member
May 14, 2008
10,988
98
Yeah! ... and far more than I wanted. Could history logging be (optionally) given timestamps without that sort of penalty?
Well, we do have a Suggestions Forum for feature requests.

History logging doesn't include timestamps because it would make it impossible to read it with a HISTORY /R. The other types of logging don't have that issue.
 
May 20, 2008
9,344
62
Syracuse, NY, USA
Well, we do have a Suggestions Forum for feature requests.

History logging doesn't include timestamps because it would make it impossible to read it with a HISTORY /R. The other types of logging don't have that issue.
I figured that. It wouldn't matter here because I use the shralias save files and load them once per login session.