[mythtv] performance

Chuck Ferring mythtv-dev@snowman.net
Fri, 13 Dec 2002 16:07:53 -0800


This is a multi-part message in MIME format.

------_=_NextPart_001_01C2A304.D93AB958
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

My hard drive is pretty old, I did some tweaking with hdparm and 23 Mb =
was about the best I could do.  Would A faster hard drive or more memory =
actually increase my performance or am I CPU bound?

=20

-----Original Message-----
From: Joe [mailto:joe@nationnet.com]=20
Sent: Friday, December 13, 2002 4:02 PM
To: mythtv-dev@snowman.net
Subject: Re: [mythtv] performance

=20

Your hard drive seems slow. Are you using ATA66 or ATA100 (80 wire =
ribbon cable)?

 I using a cheap system I built this week. My system has an Athlon XP =
1700,  512MB PC133 ram, 2 WinTV tuner cards, SBLive, Ensoniq, 60GB IBM =
HD.=20

hdparam -t returns:
 Timing buffered disk reads:  <reads:=A0>  64 MB in  1.65 seconds =3D =
38.79 MB/sec (same results multiple times)

Top returns 44% idle time, with a load averages of 0.52.


Chuck Ferring wrote:



I noticed that watching live TV uses 95-100% CPU time using mpeg4 =
encoding at 640 X 480.  My system is an Athlon XP 1800 with 256M PC 2100 =
ram.  Running hdparm tells me that my hard drive throughput is about 23 =
Mb / sec.  Is this performance about what I should expect?  If so, what =
would be the best way to increase performance, more memory, faster =
processor or faster hard drive?

=20

Thanks.

_______________________________________________ mythtv-dev mailing list =
mythtv-dev@snowman.net =
http://www.snowman.net/mailman/listinfo/mythtv-dev

------_=_NextPart_001_01C2A304.D93AB958
Content-Type: text/html;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>

<head>
<meta http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<meta name=3DGenerator content=3D"Microsoft Word 10 (filtered)">

<style>
<!--
 /* Font Definitions */
 @font-face
	{font-family:Tahoma;
	panose-1:2 11 6 4 3 5 4 4 2 4;}
 /* Style Definitions */
 p.MsoNormal, li.MsoNormal, div.MsoNormal
	{margin:0in;
	margin-bottom:.0001pt;
	font-size:12.0pt;
	font-family:"Times New Roman";}
a:link, span.MsoHyperlink
	{color:blue;
	text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
	{color:purple;
	text-decoration:underline;}
span.emailstyle17
	{font-family:Arial;
	color:windowtext;}
span.EmailStyle18
	{font-family:Arial;
	color:navy;}
@page Section1
	{size:8.5in 11.0in;
	margin:1.0in 1.25in 1.0in 1.25in;}
div.Section1
	{page:Section1;}
-->
</style>

</head>

<body lang=3DEN-US link=3Dblue vlink=3Dpurple>

<div class=3DSection1>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>My hard drive is pretty old, I did =
some
tweaking with hdparm and 23 Mb was about the best I could do.=A0 Would A =
faster
hard drive or more memory actually increase my performance or am I CPU =
bound?</span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>&nbsp;</span></font></p>

<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma'>-----Original =
Message-----<br>
<b><span style=3D'font-weight:bold'>From:</span></b> Joe
[mailto:joe@nationnet.com] <br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Friday, December =
13, 2002
4:02 PM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> =
mythtv-dev@snowman.net<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> Re: [mythtv] =
performance</span></font></p>

<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'>&nbsp;</span></font></p>

<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'>Your hard drive seems slow. Are you using =
ATA66 or
ATA100 (80 wire ribbon cable)?<br>
<br>
&nbsp;I using a cheap system I built this week. My system has an Athlon =
XP
1700,&nbsp; 512MB PC133 ram, 2 WinTV tuner cards, SBLive, Ensoniq, 60GB =
IBM HD.
<br>
<br>
hdparam -t returns:<br>
&nbsp;Timing buffered disk <a href=3D"reads:&nbsp;">reads:&nbsp;</a> 64 =
MB
in&nbsp; 1.65 seconds =3D 38.79 MB/sec (same results multiple times)<br>
<br>
Top returns 44% idle time, with a load averages of 0.52.<br>
<br>
<br>
Chuck Ferring wrote:<br>
<br>
</span></font></p>

<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>I noticed that watching =
live TV uses
95-100% CPU time using mpeg4 encoding at 640 X 480.&nbsp; My system is =
an
Athlon XP 1800 with 256M PC 2100 ram.&nbsp; Running hdparm tells me that =
my
hard drive throughput is about 23 Mb / sec.&nbsp; Is this performance =
about
what I should expect?&nbsp; If so, what would be the best way to =
increase
performance, more memory, faster processor or faster hard =
drive?</span></font></p>

<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>&nbsp;</span></font></p>

<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>Thanks.</span></font></p>

</div>

</body>

</html>
_______________________________________________
mythtv-dev mailing list
mythtv-dev@snowman.net
http://www.snowman.net/mailman/listinfo/mythtv-dev=00
------_=_NextPart_001_01C2A304.D93AB958--