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Speed/script questions. #191287 06/12/07 10:33 AM
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LostShadow Offline OP
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Is it always faster to call an alias in a remote?

Example.

Code:
if (this) {
  /dothisalias
}
if (that) {
  /dothatalias
}


Where.

Code:
alias dothisalias {
  is a bunch of if-elseif-else statements
}

2.And then, would you rather call in an alias, or use signals?

I read a tutorial on on signals and I don't see how that or calling in aliases are faster, as mIRC will have to perform them all anyways.

3.Also, for a flood script, which is faster.

On text or on ^:Text?

I noticed when there's flooding, my mIRC temporarily freezes and the Ctrl Breaks return my 2 major text events, 1's on text and the other is on ^ text.

My current flood-kicking script is on text, but I read a flood script which uses ^. It basically increases a variable for $nick.$chan.etc and ban kicks if the variable researches a number.

And then there really isn't much of a way to combine the 2, right?

4.Which is faster.

if (a) && (b) {
do this
}
if (c) && (d) {
do that
}

Basically for any event all if statements have to be called.

The above should be faster than..

if (a) && (b) && (!c) && (!d) {

I'm guessing there's a cutoff point, because you could go all the way to... if (y) && (z), right?

5.I was trying to help someone, but couldn't find the most efficient way.

An on mode event that reverses everything someone does.

Example: someone sets mode: +a-b
You set mode: -a+b

I have.

Code:
on *:mode:#: {
  if ($nick == ) {
    /mode $chan $replace($1-,+,-,-,+)
  }
}


That just means +o-o becomes -o-o.

And using $replace($1-,-,+,+,-) just makes +o-o +o+o, etc.

So I used something like:

if (+ isin $1-) { /mode $chan $replace($1-,+,-) }
if (- isin $1-) { /mode $chan $replace($1-,-,+) }

Therefore.

Someone sets mode +abc-def

You sets mode -abc
You sets mode +def

Of course, this takes double lines, double flood. Anyone know a way to make it work in 1 line?

Thanks.

-Neal.

Re: Speed/script questions. [Re: LostShadow] #191309 06/12/07 02:44 PM
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Riamus2 Offline
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For all speed related questions, it is always better for you to test it yourself. Asking here just means *someone* has to test it, so you might as well do it yourself to save others from doing what you can do. Besides that, depending on what scripts you are running, the speed and memory of your computer, what other programs you're running, etc... the results may be different for you than for someone else.

Testing speed is really easy. Here's a small example.

Code:
alias remote_speed {
  var %ticks = $ticks, %cnt = 1
  while (%cnt <= 20000) {
    var %test = 1
    inc %cnt
  }
  echo -a Speed (ms): $calc($ticks - %ticks)
}


Then in aliases:
Code:
alias_speed {
  var %ticks = $ticks, %cnt = 1
  while (%cnt <= 20000) {
    var %test = 1
    inc %cnt
  }
  echo -a Speed (ms): $calc($ticks - %ticks)
}


You can adjust the 20000 to another number if you want. A higher number gives more accurate results, but takes longer. Note that you can take the Speed out of (ms) by using $duration, but I personally think it is easier to see differences this way.

For any other speed difference questions, just put whatever you're testing *inside* the loop in place of the "var %test = 1". If you're using different kinds of events, you still do the same basic thing... but put the code into those events and test.


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Re: Speed/script questions. [Re: LostShadow] #191310 06/12/07 02:46 PM
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Riamus2 Offline
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For your last question... /help $replacex


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Re: Speed/script questions. [Re: LostShadow] #191314 06/12/07 02:52 PM
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TropNul Offline
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Quote:
Is it always faster to call an alias in a remote?


Imho, it depends greatly on how the alias being called is coded. And also on why it has to be called.
There are many cases where aliases are not needed even though the programmer wants to neaten the code.
As a matter of fact, it is generally recommended to use a subalias whenever some statements in the source
repeat themselves.This will then save space and therefore, the interpreter's parser would be quicker (only if
things are well written though :p ).

Code:
2.And then, would you rather call in an alias, or use signals?


The advantage of the "on signal" event is stated in the help file itself.

Originally Posted By: from the help file
Signals are a simple way of triggering signal
events in multiple scripts at the same time.


Whereas, simple aliases can't be called in multiple scripts at the same time.

Furthermore,

Originally Posted By: from the help file
By default the signal is triggered after all current
scripts have finished executing. You can however use -n to make the script trigger immediately.


This statement clearly shows that in some particular cases, signal events are better
to use than any other method.

For example, in a protection script, you could just use a signal with the -n switch.
This will make your protection script react before all other scripts.

Quote:
3.Also, for a flood script, which is faster.

On text or on ^:Text?

I noticed when there's flooding, my mIRC temporarily freezes and the Ctrl Breaks return my 2 major text events, 1's on text and the other is on ^ text.

My current flood-kicking script is on text, but I read a flood script which uses ^. It basically increases a variable for $nick.$chan.etc and ban kicks if the variable researches a number.

And then there really isn't much of a way to combine the 2, right?


If your mIRC freezes when there is flooding, it may be normal. Normal, because it was a massive flood where
all the better and fastest protection scripts would freeze. Not normal, because the protection script was
badly written.

The basic usage of the ^ prefix is to halt mIRC's default displayed texts for particular events.
It may gain some milliseconds if correctly used but it won't be significant enough during massive floods.
The protection script you read (the one using ^) may only be better as it may have been written better.
Prefer hash tables for protection scripts. They are basically quicker. But I think I've read something on
variable being faster than hash tables in some cases.
Once more, the way some function reacts (rapidity, reliability) stand only on the way it was written.

4.Which is faster.

Quote:

if (a) && (b) {
do this
}
if (c) && (d) {
do that
}

Basically for any event all if statements have to be called.


If you don't want all the 'Ifs' to be executed, then use 'ElseIf'.

Quote:
The above should be faster than..

if (a) && (b) && (!c) && (!d) {

I'm guessing there's a cutoff point, because you could go all the way to... if (y) && (z), right?


It won't be faster because you use && everywhere. This means that for the "if" to be validated, it has
to go through all the conditions. It won't be validated only and only if some conditions are false. The
first false condition in a "if" statement containing only '&&s' is the cutoff point.

5.

I've found only this solution (for now) to reverse all the modes put on a channel.
Basically, the function 'RevMode' parses the <string> $1- for each character looking
for a '-' or a '+' and then replaces the latters accordingly until the end of the
<string>.

Code:
on *:mode:#:{ MODE $chan $RevMode($1-) }

Alias RevMode {
  Var %m = $1- , %i = 1 , %k , %z
  While $mid(%m,%i,1) {
    Var %k = $v1
    Var %z = %z $+ $iif((%k == -),+,$iif((%k == +),-,%k))
    Inc %i
  }
  Return %z
}


If ever I find a way ( or maybe someone else will find it), then there'll surely be a
new post following this one. wink

Cordialement


tropnul
Re: Speed/script questions. [Re: Riamus2] #191316 06/12/07 02:56 PM
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TropNul Offline
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Alright, i've recoded some part of $replacex(). I should have read the help file once more I think. :s


tropnul
Re: Speed/script questions. [Re: TropNul] #191340 07/12/07 12:17 AM
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LostShadow Offline OP
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Originally Posted By: from the help file
Signals are a simple way of triggering signal
events in multiple scripts at the same time.
Quote:
Whereas, simple aliases can't be called in multiple scripts at the same time.


The way I understand it, mIRC doesn't do 2 things at the same time. It does 1 right after the other.

So let's talk about multiple scripts. If I have a /dothisalias that triggers for an on text, join, and quit event, and all 3 happened, then mIRC will perform the alias 3 times in a row, in the order the server sent in /debug @debug. So isn't this the way mIRC performs an alias in multiple scripts? Is this what you meant by multiple scripts? How does the signals make the advantage?

Originally Posted By: from the help file
By default the signal is triggered after all current
scripts have finished executing. You can however use -n to make the script trigger immediately.


Okay, so this is a way to get the more important stuff done first. I see that as a benefit. But so using the -n switch is pretty much the same as calling an alias?

Quote:
This statement clearly shows that in some particular cases, signal events are better
to use than any other method.

For example, in a protection script, you could just use a signal with the -n switch.
This will make your protection script react before all other scripts.


Okay, seems like signals are all about order.

-Neal.

Re: Speed/script questions. [Re: LostShadow] #191342 07/12/07 01:32 AM
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nomer2007 Offline
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Quote:
/signal [-n] <name> [parameters]

That's what the help file said about on signal
i always used this
Quote:
/signal [name]


but what does parameters do?

Re: Speed/script questions. [Re: nomer2007] #191343 07/12/07 01:51 AM
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LostShadow Offline OP
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Originally Posted By: nomer2007
Quote:
/signal [-n] <name> [parameters]

That's what the help file said about on signal
i always used this
Quote:
/signal [name]


but what does parameters do?


Take a look at the below tutorial:

http://www.mircscripts.org/showdoc.php?type=tutorial&id=1305

As per the script with the siganl, I don't see how that is any way faster..

-Neal.

Re: Speed/script questions. [Re: nomer2007] #191344 07/12/07 03:14 AM
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starbucks_mafia Offline
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The additional parameters passed make up the $1- in the signal events.


Spelling mistakes, grammatical errors, and stupid comments are intentional.
Re: Speed/script questions. [Re: LostShadow] #191345 07/12/07 03:29 AM
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starbucks_mafia Offline
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The 'multiple scripts' aspect of signals is that multiple scripts can trigger from a single signal without that originating script needing to to know about all the receiving scripts at the time it's written.

For instance if I had a script that allowed mIRC to send and receive video messages I could have that script do /signal vidstreamstart nickname on creation of a video link, and /signal vidstreamend nickname upon closing. Then, I could have any number of other scripts use on *:signal:vidstream*:do_stuff to trigger additional behaviour in mIRC that is beyond the scope of the original video streaming script (for instance I might later decide it's useful to stop music playing on video start, or to set myself away/back on IRC when opening/closing video links).

There's no simple way to do that with aliases - I'd need to know all the scripts that are going to be called when I wrote the original video streaming script.


Spelling mistakes, grammatical errors, and stupid comments are intentional.
Re: Speed/script questions. [Re: LostShadow] #191346 07/12/07 04:08 AM
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Imho, events are parsed by the mIRC's interpreter first. Then if some alias is called in an event, it will parse the file to execute it. If that is the case, then signal events are 'faster' than calling aliases to do the same work. I'm not sure if that's right as I'm no expert of mIRC's internals. Maybe someone could give us more information on this issue about what is parsed first by the interpreter.

However, there could be another version. Maybe everything is parsed in one go. Then events, aliases, menus, etc.. are all indexed in a hash table to be easily and rapidly called later on when needed. This method has an advantage over the last one but still has a disadvantage for speed concerns. Because if there are more aliases than events for example, then the parser will take some time to parse everything before execution starts. I would personally prefer it to parse all events first, then parse everything else.

As a matter of fact, aliases can only be called in events in mIRC, except in popups (by the user) or through the editing line (by the user also). This then supports my first idea. But once more, I can't prove all that. Just some thoughts.

Cordialement smile


tropnul
Re: Speed/script questions. [Re: TropNul] #191357 07/12/07 02:02 PM
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jaytea Offline
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just focusing on this one difference between a signal (-n) and an alias, once the signal event has ended, mirc continues to look for matching signal events in other files. but once an alias is found it stops there. can't think of any reason why using signals would be quicker than using aliases :p but like i always say, when you're dealing with these negligible differences in speed use what is suitable to your task


"The only excuse for making a useless script is that one admires it intensely" - Oscar Wilde
Re: Speed/script questions. [Re: jaytea] #191389 08/12/07 02:14 AM
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first try:

time to process using alias: 1469
time to process using signal -n: 2750

second try:

time to process using alias: 1437
time to process using signal -n: 2844

I had the alias and the signal inc the loop variable and this is the result I got. Aliases are twice as fast, go figure. I thought the signal would be faster. frown

Re: Speed/script questions. [Re: DJ_Sol] #191391 08/12/07 03:17 AM
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Horstl Offline
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There are two other factors one has to account for:

1) number of scripts / event definitions at all
That's plain: The more event definitions mIRC has to get through, the longer it will take till all have been processed. And in the worst case, some "protection" is triggered in the last of these event definitions... This is related to:

2) file order
mIRC processes all loaded script files (and thus all event-related scripts matching some event) linear. But we can rarely ensure that "protections" and the like are first in file order... especially if we write addons that someone loads to whatever-scripts-bundle he uses already. First in order - first processed.

Originally Posted By: DJ_Sol
I thought the signal would be faster. frown

Why should it be faster, in the end? smile
mIRC keeps processing all things "linear", be it an alias or an on signal event.
As far as I understand it (and concuring with JayTea): calling an alias is some kind of "locate alias and if found: execute alias". That is: if the alias is found, done!
On the contrary, sending a signal is more: 1) locating and executing the first on signal event. But then: 2) check for further on signal events.
In addition, if no -n switch is used: mIRC has somehow to "queue" the signal until all other events (and aliases called out of these events) have finished.

And besides the "trigger multiple things out of one signal" advantage, this queue option can help you "speed up" some important parts like protecionts in a relative way, as you can define:

- which parts should be executed "at once":
by: signal -n or code triggered directly (code or aliases in event definition)
e.g.: protections

- which parts should be executed "later":
by: signal WITHOUT -n
e.g.: stats, counters, auto-messages, titlebar updates, whatever

So what can be done to speed things up?
We could use signal (without -n) for non-critical event-related scripts. Important things will not be processed faster - but unimportant things will be processed afterwards. laugh
Some "on !*:JOIN:#: { echo $chan $nick joins $chan | haltdef }" is certainly not worh the effort. But there are scripts who are.

Finally, to be honest, I'm rarely exerting this to my own scripts so far - but imho this *would* be the best method to ensure a good performance of e.g. scripted protections.

There are two other factors one has to account for:

1) number of scripts / event definitions at all
That's plain: The more event definitions mIRC has to get through, the longer it will take till all have been processed. And in the worst case, some "protection" is triggered in the last of these event definitions... This is related to:

2) file order
mIRC processes all loaded script files (and thus all event-related scripts matching some event) linear. But we can rarely ensure that "protections" and the like are first in file order... especially if we write addons that someone loads to whatever-scripts-bundle he uses already. First in order - first processed.

Originally Posted By: DJ_Sol
I thought the signal would be faster. frown

Why should it be faster, in the end? smile
mIRC keeps processing all things "linear", be it an alias or an on signal event.
As far as I understand it (and concuring with JayTea): calling an alias is some kind of "locate alias and if found: execute alias". That is: if the alias is found, done!
On the contrary, sending a signal is more: 1) locating and executing the first on signal event. But then: 2) check for further on signal events.
In addition, if no -n switch is used: mIRC has somehow to "queue" the signal until all other events (and aliases called out of these events) have finished.

And besides the "trigger multiple things out of one signal" advantage, this queue option can help you "speed up" some important parts like protecionts in a relative way, as you can define:

- which parts should be executed "at once":
by: signal -n or code triggered directly (code or aliases in event definition)
e.g.: protections

- which parts should be executed "later":
by: signal WITHOUT -n
e.g.: stats, counters, auto-messages, titlebar updates, whatever

So what can be done to speed things up?
We could use signal (without -n) for non-critical event-related scripts. Important things will not be processed faster - but unimportant things will be processed afterwards. laugh
Some "on !*:JOIN:#: { echo $chan $nick joins $chan | haltdef }" is certainly not worh the effort. But there are scripts who are.

Finally, to be honest, I'm rarely exerting this to my own scripts so far - but imho this *would* be the best method to ensure a good performance of e.g. scripted protections.

Originally Posted By: LostShadow
And then there really isn't much of a way to combine the 2, right?

Most likely you could combine the two scripts - as long as there is no "halt" or "return" command preventing the execution of the one or the other. The one using ^ is likely to haltdef the original text output and display some modified (styled or the like) output - but haltdef is not breaking the script/processing. And I doubt a combination of the two will noticable speed things up smile

Last edited by Horstl; 08/12/07 03:29 AM.
Re: Speed/script questions. [Re: Horstl] #191392 08/12/07 03:43 AM
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Lpfix5 Offline
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*Thinks that Horstl needs to nap his fingers they must be blistering.


Code:
if $reality > $fiction { set %sanity Sane }
Else { echo -a *voices* }
Re: Speed/script questions. [Re: LostShadow] #191396 08/12/07 06:31 AM
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RRX Offline
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Does mIRC maintain a buffer or so with the scriptfile, event description and memory pointer (the triggering conditions) of all events, so it only has to go through this list to know which events in which files should be triggered?
That would act like an index so decrease the amount data to go through.
And maybe something similar for aliases?

Last edited by RRX; 08/12/07 06:32 AM.
Re: Speed/script questions. [Re: Lpfix5] #191419 08/12/07 08:23 PM
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Horstl Offline
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dunno why it doublicated, and now it's to late to edit frown

Re: Speed/script questions. [Re: Horstl] #191454 09/12/07 07:26 AM
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DJ_Sol Offline
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lol @doublicated. Thanks horstl.

Does mIRC not keep a list of events and aliases? I would think it wouldn't search through every file for a specific event but check the list of stored events or aliases. I have no idea.

EDIT: Oh, sorry I guess RRX asked the same q.

Last edited by DJ_Sol; 09/12/07 07:27 AM.
Re: Speed/script questions. [Re: DJ_Sol] #191523 10/12/07 09:37 PM
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Riamus2 Offline
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Yes, I believe the list of aliases are stored in memory (as you can see, the View menu in the Aliases tab lists them).


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Re: Speed/script questions. [Re: Riamus2] #197461 06/04/08 09:39 AM
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Originally Posted By: Riamus2
Yes, I believe the list of aliases are stored in memory (as you can see, the View menu in the Aliases tab lists them).

That lists the alias definition's diskfiles, not all aliases (Remote) as such.
I ment: an index, a table in RAM, with the names of all aliases and their 'memory' addresses, so mIRC doesn't have to dwell through all the running code but has just to jump to the in-the-index specified offset, abit similar to the segment descriptors in OS'es memory management. If this is true it would imply that as soon as mirc starts running edited code it has to re-make that index.
If mIRC does do this, then using ! for speed improvement delivers little gain, if it doesn't do it, then it may deliver substantial gains, depending on several factors, such as position of the alias (load order and begin or end of the file), at expense of an extra char for every native mirc command (the !).

Also, if it doesn't keep an index, or maybe even regardless this, I'd say it would be worthwhile to have, as scripter/user, some control over mircs parser, for ex, a setting/script command to set native commands as default, so that you don't need to use the ! everywhere to force mirc to NOT search. In that case you could start a piece of code with (ex) "native on", from which point it directly uses native commands (and doesnt look in aliases/remote), until it finds a "native off".
Abit similar to how /scid and /scon work, and maybe also like those, only for the currently running code, ie, if alias A calls alias B and alias B switches it (too), alias A isn't affected.