Today I posted this in the Technical Issues forum but have reposted it here with more detail as it affects scripters and anyone using Mono.
Does any one know why Mono is running much slower across the grid lately?
Or if this slowdown is likely to be permanent due to some new Mono features?
It seems constant at about 2.8 times slower than a few weeks ago. Unfortunately I don't know when the slowdown occured.
I produce a freebie lag tester that measures both script speed for Mono and LSL - the script is given below.
The LSL versions shows scripts running at full speeds in good sims but the Mono version shows 2.8 times slower. I have tested this in a dozen or so lightly loaded sims and full Islands but the slowdown is remakably constant at 2.8 to 2.9.
This Mono slowdown is really affecting us because we converted our chess and poker games from LSL to Mono and saw a very large increase in speed. So there must be many others in the same position as us.
Any thoughts would be really appreciated.
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The script is below - and just measures the number of computations over a given time. They were vey accurate for both Mono and LS until a short time ago. the LSL one is still accurate.
<?php
// This lag tester gives a rough measure of script speed
// and so gives an indication of how fast our chess computers
// will run in that location.
// for example
// speed 1 and the Blitz level should take 10 seconds or less
// speed 2 - and Blitz takes 20 seconds
// speed 30 - Blitz takes 300 seconds - so chess is unplayable
// This Lag Tester is free for any use:-
// you can modify, give away, sell, take the code whatever.
// Yes, the scripting is a mess, but it is FREE
//integer MAX_LOOP = 1695; // Gives 1 second in lag free sim LSL
integer MAX_LOOP = 99009; // Gives 1 second in lag free sim MONO
integer startTime;
integer endTime;
integer timeTaken;
Main()
{ float ftime;
float diff;
llOwnerSay(""
;llOwnerSay("Lag test starting...."
;ComputeLag(MAX_LOOP/5);
if (timeTaken<=1)
{ ComputeLag(MAX_LOOP*10);
ftime=timeTaken/10.0;
if (ftime<1.0) ftime=1.0;
llOwnerSay("Time = "+(string)ftime);
}
else
{ ComputeLag(MAX_LOOP/2);
ftime=timeTaken*2.0;
llOwnerSay("Sim Speed = "+(string)ftime);
}
diff=ftime-1.0;
if (ftime>1.0) llOwnerSay("Sim "+(string)diff+" times slower!"
;else llOwnerSay("Fast Sim"
;if (ftime<=1.2) llOwnerSay("Good"
;else if (ftime<=1.5) llOwnerSay("Okay"
;else if (ftime<2.0) llOwnerSay("Slow"
;else if (ftime<3.0) llOwnerSay("Very Slow"
;else llOwnerSay("Terrible"
;llOwnerSay(""
; }
ComputeLag(integer count)
{ integer n;
float num1;
float num2;
float num3;
float num4;
startTime=llGetUnixTime();
num1=3.142;
num2=9.189;
n=1;
do
{
num3=num1*num2;
num4=num3/num1;
n=n+1;
}
while(n<=count);
endTime=llGetUnixTime();
timeTaken=endTime-startTime;
}
default
{
touch_start(integer total_number)
{
Main();
}
}
?>
