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<FONT
face=Arial>Anyone running win2k on a P3 motherboard should be aware of a
nasty performance issue involving IRQ sharing under ACPI
[plug-and-play].
<FONT
size=2><SPAN
class=731364917-07042004>
<FONT
face=Arial>To see if you have this problem, check
IRQ usage in Device Manager/Resources.
<FONT
face=Arial><SPAN
class=731364917-07042004>
<FONT
face=Arial>If, like me, you found that all of the
PCI devices used IRQ 9, consider disabling ACPI--<SPAN
class=731364917-07042004>Goggle 'acpi windows 2000 irq' for
details.
<FONT
face=Arial><SPAN
class=731364917-07042004>
<FONT
face=Arial>I did
it [by setting up a new non-ACPI Hardware profile] and found
a dramatic.drop in CPU
usage.
<FONT
face=Arial><SPAN
class=731364917-07042004>
<FONT
face=Arial><SPAN
class=731364917-07042004>Bob
<SPAN
class=731364917-07042004><FONT
color=#0000ff><SPAN
class=731364917-07042004>
<SPAN
class=731364917-07042004>
<SPAN
class=731364917-07042004> -----Original Message-----From:
Tomasz Janeczko [mailto:amibroker@xxxxxx]Sent: Wednesday, April 07,
2004 1:19 AMTo: amibroker@xxxxxxxxxxxxxxxSubject: Re:
[amibroker] Anyone using Amibroker with 6-8 realtime charts? - CPU staying at
100% all the time
Hello,
I can not agree with any of those observations. AB performs
just fine in real time mode provided that
one does not use "killer" formulas like on-the-fly-line
composites over hundreds of tickers.
SAR is not that bad. I can run 10 charts with two panes each
Price and SAR simultaneously in real-time without problems.
I have standard setting of 3 second refresh interval (in
Tools->Preferences->Intraday)
With this setup on my Athlon XP1700 it consumes on AVERAGE
not more than 9% (NINE PERCENT only) of CPU time.
(see attached)<IMG alt="" hspace=0
src="gif00092.gif" align=baseline border=0>
To get AVERAGE CPU usage measure in Windows Task manager
switch View->Refresh interval to "SLOW"
You may be misguided completely by the Windows Task manager
if you set View->Refresh interval to "FAST".
Then it gives you not average but temporary
amounts.
When you switch to "FAST" mode the CPU usage shown will jump
from ZERO to 100% because this is the way
all programs work: if then need CPU - they get the time
slice from the system and execute at MAXIMUM SPEED (100%)
until given task (say refresh) is completed - then they
switch to sleep state (0% CPU) and so on.
So you will get spikes and valeys but it averages to much
smaller value than the spike is.
For example in the 10 chart example I was getting 60% spikes
and much long 0% CPU usage areas.
If you unfortunatelly have written very slow formula
the solution may be just to go to
Tools->Preferences->Intraday
and change
"Intraday refresh interval" from default 3 seconds to 5
or 10 seconds.
Best regards,Tomasz
Janeczkoamibroker.com
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
Ara Kaloustian
To: <A title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxx
Sent: Wednesday, April 07, 2004 6:27
AM
Subject: Re: [amibroker] Anyone using
Amibroker with 6-8 realtime charts? - CPU staying at 100% all the time
Hi Jayson,
AB takes a lot of CPU usage in RT. The most
I'll do is 4 with update every 5 seconds. ... so it has not been as good as
it is for EOD.
I use it in conjuction with eSignal ... not
sure if I can realisticalyy migrate to AB alone...
4 items you might watch for to decrease
CPU load:
- Do not use interpretation window - causes
extra processing.
- Do not use Tooltips - causes extra
processing.
- If you have loops that start at someplace
other than i=0, quick AFL will not help... AB will process all cells at
every bar
- Update screen as little as possible. AB
processes all data every time you update screen
Ara
<BLOCKQUOTE dir=ltr
>
----- Original Message -----
<DIV
>From:
<A title=jcasavant@xxxxxxxxxxx
href="">Jayson
To: <A
title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxx
Sent: Tuesday, April 06, 2004 3:33
PM
Subject: RE: [amibroker] Anyone using
Amibroker with 6-8 realtime charts? - CPU staying at 100% all the
time
<FONT face=Arial color=#0000ff
size=2>What are you running? Sounds like maybe you need more horse
power :)
<FONT face=Arial color=#0000ff
size=2>
<FONT face=Arial color=#0000ff
size=2>A lot can have to do with the indicatorsa you are running. 10
charts is a lot of RT data streaming through the CPU at one
time...
<FONT face=Arial color=#0000ff
size=2>
<FONT face=Arial color=#0000ff
size=2>Regards,
<FONT face=Arial color=#0000ff
size=2>
<FONT face=Arial color=#0000ff
size=2>Jayson
<FONT face=Tahoma
size=2>-----Original Message-----From: Padhu
[mailto:ccie8340@xxxxxxxxx]Sent: Tuesday, April 06, 2004 1:16
PMTo: <A
href="">amibroker-afl@xxxxxxxxxxxxxxxCc:
amibroker@xxxxxxxxxxxxxxxSubject: [amibroker] Anyone using
Amibroker with 6-8 realtime charts? - CPU staying at 100% all the
time
Hello,
Anyone out there using AB with esignal
realtime with 6 or more real time chart windows open?. I have about 10
Forex realtime charts and I see CPU staying at 100% all the time....With
help
from support I made some modifications to
the code also...But still stays very high....If anyone has seen this
before appreciate your comments.
Thanks.
Cheers,PadhuSend
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suggest@xxxxxxxxxxxxx-----------------------------------------Post
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