[mythtv-users] Number of threads needed?

[Richard Schelin]

The PIDs are different, so does this mean that they are NOT threads, or 
could my kernel give PIDs to threads?

I was more curious if this is the behaviour that everyone else sees.

Thanks!

top output:

30546 nobody    24   0 11464  11m 6572 S  0.0  2.2   0:00.03 mythbackend
30553 nobody    15   0 11464  11m 6572 S  0.0  2.2   0:00.00 mythbackend
30554 nobody    15   0 11464  11m 6572 R  0.0  2.2   0:00.00 mythbackend
30555 nobody    15   0 11464  11m 6572 S  0.0  2.2   0:00.05 mythbackend
30556 nobody    25   0 11464  11m 6572 S  0.0  2.2   0:00.00 mythbackend
30557 nobody    25   0 11464  11m 6572 S  0.0  2.2   0:00.00 mythbackend
30558 nobody    25   0 11464  11m 6572 S  0.0  2.2   0:00.00 mythbackend
30559 nobody    25   0 11464  11m 6572 S  0.0  2.2   0:00.00 mythbackend
30560 nobody    25   0 11464  11m 6572 S  0.0  2.2   0:00.00 mythbackend
30501 mysql     15   0  5500 5500 2496 S  0.0  1.1   0:00.02 mysqld
30502 mysql     15   0  5500 5500 2496 S  0.0  1.1   0:00.00 mysqld
30503 mysql     15   0  5500 5500 2496 S  0.0  1.1   0:00.00 mysqld
30504 mysql     25   0  5500 5500 2496 S  0.0  1.1   0:00.00 mysqld
30547 mysql     20   0  5500 5500 2496 S  0.0  1.1   0:00.01 mysqld
30548 mysql     20   0  5500 5500 2496 S  0.0  1.1   0:00.01 mysqld
30549 mysql     15   0  5500 5500 2496 S  0.0  1.1   0:00.0









----Original Message Follows----
From: Kirby Vandivort <kvandivo at ks.uiuc.edu>
Reply-To: Discussion about mythtv <mythtv-users at snowman.net>
To: Discussion about mythtv <mythtv-users at snowman.net>
Subject: Re: [mythtv-users] Number of threads needed?
Date: Fri, 20 Jun 2003 15:01:54 -0500

most versions of top report threads as different processes, even though
they are actually sharing the same space.  Check the PIDs.. I'm guessing
they will all be the same.


On Fri, Jun 20, 2003 at 03:13:02PM -0400, Richard Schelin wrote:
 >
 > My question, the rest of below should answer 99% of the questions I may 
get
 > :), is :
 >
 > Is it normal for me to see 9 mythbackend processes running when I start
 > mythbackend?  the number of mysqld processes jumps from ~4 to the number 
of
 > mythbackend processes I have running.
 >
 > This concers me because I'm looking at the Residental space these take,
 > when I first start each takes 11Mb (mythbackend), and 5.5 for each mysql.
 > Just now They were up to 39+7.5, or 46.5Mb each, and I had 11 of each
 > process running (Strangely that's the 512Mb of ram in my system...)
 >
 > Right now top shows 256k of swap used....(after restarting both mysql and
 > mythbackend, which did remove ALL those processes).
 >
 > Is this normal?
 >
 > Thanks,
 >
 > Rich
 >
 > Start lengthy system information.
 >
 >
 > I have just installed Gentoo, and mythTv 9.1.
 >
 > I have a Athlon-Xp 2600+, 512Mb ram, a ATI Wonder Ve card and a Gainward
 > 128mB Geforce 4 4200.
 >
 > My kernel is custom built on linux-2.4.21-rc4-aa1 sources.
 >
 > I'm running XFree86 Version 4.3.0, with fluxbox as my WM, and the latest
 > nvidia driver.
 >
 > I have mysql, and mythbackend start during boot time (it shows the user 
for
 > mythbackend as "nobody", and for mysqld the user is "mysql")
 >
 > I can record shows just fine, watching liveTv can be a little jumpy at
 > 720x480 Mpeg4 no compression on the audio and all the neat buttons 
clicked,
 > I'm running fullscreen on my monitor for now...Ths concerns me a little 
bit.
 >
 > I can record a show, and watch the show a minute or so behind and there 
is
 > no skipping or anything, but watching live doesn't seem to be happy.  
I've
 > watched my cpu usage hang right around 90% watching live Tv.
 >
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--

Kirby Vandivort                      Theoretical and Computational 
Biophysics
Email: kvandivo at ks.uiuc.edu          3051 Beckman Institute
http://www.ks.uiuc.edu/~kvandivo/    University of Illinois
Phone: (217) 244-5711                405 N. Mathews Ave
Fax  : (217) 244-6078                Urbana, IL  61801, USA
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