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speed of access #183758 22/08/07 11:33 AM
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pouncer Offline OP
Hoopy frood
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say if i have something like this

raw -q mode $chan +q $nick $+ $crlf $+ mode $chan -q $nick $+ $crlf $+ mode $chan +v $nick

is it a better code practise to set the $nick and $chan as vars??

var %chan = $chan
var %nick = $nick

raw -q mode %chan +q %nick $+ $crlf $+ mode %chan -q %nick $+ $crlf $+ mode %chan +v %nick

im wondering how mirc is accessing the identifiers like $nick and $chan and if its faster to access by vars (even though the speed isnt human recognisable, im just interested if its better to access by variables instead of calling identifiers repeatedly)

Re: speed of access [Re: pouncer] #183760 22/08/07 11:45 AM
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Riamus2 Offline
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You can test things like this yourself by doing a simple loop test using $ticks.

Code:
alias speedtest {
  var %cnt = 1
  var %ticks = $ticks
  while (%cnt <= 5000) {
    noop mode $chan +q $snicks $+ $crlf $+ mode $chan -q $snicks $+ $crlf $+ mode $chan +v $snicks
    inc %cnt
  }
  echo -a Time to complete: $calc(($ticks - %ticks) / 1000)
}


**Call the alias from a channel with a nick selected in your nick list**

Then do the same by replacing all of the identifiers with variables.

Also consider that $+() is often better than a lot of $+'s.

Last edited by Riamus2; 22/08/07 11:47 AM.

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Re: speed of access [Re: Riamus2] #183761 22/08/07 11:49 AM
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pouncer Offline OP
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thats odd, the vars one came out slightly slower for me

Time to complete: 13.656 for your code
Time to complete: 13.672 for vars

Code:
alias speedtest {
  var %cnt = 1
  window @SpeedTest
  var %ticks = $ticks, %chan = $chan, %snicks = $snicks
  while (%cnt <= 5000) {
    echo @SpeedTest mode %chan +q %snicks $+ $crlf $+ mode %chan -q %snicks $+ $crlf $+ mode %chan +v %snicks
    inc %cnt
  }
  echo -a Time to complete: $calc(($ticks - %ticks) / 1000)
}

Last edited by pouncer; 22/08/07 11:50 AM.
Re: speed of access [Re: pouncer] #183768 22/08/07 01:12 PM
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hixxy Offline
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Code:
alias speedtest1 {
  var %cnt = 10000, %ticks = $ticks
  while (%cnt) {
    noop mode $chan +q $snicks $+ $crlf $+ mode $chan -q $snicks $+ $crlf $+ mode $chan +v $snicks
    dec %cnt
  }
  echo -a (speedtest1): $calc(($ticks - %ticks) / 1000)
}
alias speedtest2 {
  var %cnt = 10000, %ticks = $ticks, %chan = $chan, %snicks = $snicks
  while (%cnt) {
    noop mode %chan +q %snicks $+ $crlf $+ mode %chan -q %snicks $+ $crlf $+ mode %chan +v %snicks
    dec %cnt
  }
  echo -a (speedtest2): $calc(($ticks - %ticks) / 1000)
}
alias speedtest {
  var %cnt = 5
  while (%cnt) {
    speedtest1
    speedtest2
    linesep -a
    dec %cnt
  }
}


/speedtest

I get:

Quote:
(speedtest1): 1.265
(speedtest2): 0.547
-
(speedtest1): 1.203
(speedtest2): 0.563
-
(speedtest1): 1.265
(speedtest2): 0.547
-
(speedtest1): 1.187
(speedtest2): 0.563
-
(speedtest1): 1.203
(speedtest2): 0.547


Seems that %vars are faster. That's when you're doing 10,000 loops though. When using them once the difference is going to be a couple of milliseconds at best.

Edit: in fact, it will be slower to use vars one time, because you're going to have to evaluate the identifier to set the variable, and then use the variable. It'll be quicker to use the identifier directly.

Last edited by hixxy; 22/08/07 01:17 PM.
Re: speed of access [Re: hixxy] #183769 22/08/07 01:19 PM
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pouncer Offline OP
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ahh you changed it to noop, thankss!

Re: speed of access [Re: pouncer] #183836 23/08/07 12:01 AM
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Riamus2 Offline
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Sorry, you read it while I was changing it. Note also that you might want to change $snicks to $me as that would probably affect the speed and $me is probably closer to having the same evaluation time as $nick. Even so, vars seem to be faster. Again, unless you're doing major things (such as 5000+ loops), the difference is so small as to not matter.


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