[mythtv] performance
Chuck Ferring
mythtv-dev@snowman.net
Fri, 13 Dec 2002 16:44:37 -0800
This is a multi-part message in MIME format.
------_=_NextPart_001_01C2A309.FADAF843
Content-Type: text/plain;
charset="US-ASCII"
Content-Transfer-Encoding: quoted-printable
Does anyone have a hard drive recommendation? What kind of performance
do people get with whatever brand/model they're using?
=20
-----Original Message-----
From: Joe [mailto:joe@nationnet.com]=20
Sent: Friday, December 13, 2002 4:35 PM
To: mythtv-dev@snowman.net
Subject: Re: [mythtv] performance
=20
I have a slower CPU/ memory and I can pause and play TV on both tuners.
With both tuners recording, my system starts to top out. I also encode
at 640 x 480 so it looks like the main difference is the hard drive.
423MB of my memory is in use for cached files meaning that 79MB is used
for the programs to run, so I'm not sure that more memory will help.
Whichever way you decide to go, let us know how it works out.
Chuck Ferring wrote:
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
_______________________________________________ mythtv-dev mailing list
mythtv-dev@snowman.net
http://www.snowman.net/mailman/listinfo/mythtv-dev=20
------_=_NextPart_001_01C2A309.FADAF843
Content-Type: text/html;
charset="US-ASCII"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; =
charset=3Dus-ascii">
<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;}
span.EmailStyle19
{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'>Does anyone have a hard drive =
recommendation?
What kind of performance do people get with whatever brand/model =
they’re
using?</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'> </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
4:35 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'> </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'>I have a slower CPU/ memory and I can pause =
and play
TV on both tuners. With both tuners recording, my system starts to =
top
out. I also encode at 640 x 480 so it looks like the main difference is =
the
hard drive. 423MB of my memory is in use for cached files meaning that =
79MB is
used for the programs to run, so I'm not sure that more memory will =
help.
Whichever way you decide to go, let us know how it works out.<br>
<br>
Chuck Ferring wrote:<br>
<br>
</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><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. Would A faster hard drive or more memory actually increase my
performance or am I CPU bound?</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'> </span></fo=
nt></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><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 [<a
href=3D"mailto:joe@nationnet.com">mailto:joe@nationnet.com</a>] <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> <a
href=3D"mailto:mythtv-dev@snowman.net">mythtv-dev@snowman.net</a><br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> Re: [mythtv] =
performance</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
<p class=3DMsoNormal =
style=3D'margin-right:0in;margin-bottom:12.0pt;margin-left:
1.0in'><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>
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.
<br>
<br>
hdparam -t returns:<br>
Timing buffered disk <a href=3D"reads:%A0">reads: </a> 64 MB =
in
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:</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><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. 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?</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>Thanks.</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'>______________________________________________=
_
mythtv-dev mailing list <a =
href=3D"mailto:mythtv-dev@snowman.net">mythtv-dev@snowman.net</a>
<a =
href=3D"http://www.snowman.net/mailman/listinfo/mythtv-dev">http://www.sn=
owman.net/mailman/listinfo/mythtv-dev</a>
_______________________________________________ mythtv-dev mailing list
mythtv-dev@snowman.net =
http://www.snowman.net/mailman/listinfo/mythtv-dev </span></font></p>
</div>
</body>
</html>
=00
------_=_NextPart_001_01C2A309.FADAF843--