[mythtv-users] dropped frames on wlan access.
Jason Ferrara
jason at discordia.org
Sun Jan 18 11:23:22 EST 2004
My mythtv box is a Dell Dimension 4500 (2Ghz P4) with a Hauppage WinTV
401 tuner card and a
Prism 2.5 based wireless lan card. If there is any heavy network
activity (like copying a file
with scp), mythtv will end up with LOTS of dropped frames in the
recording.
Does anyone have any idea how to fix this? I'd like to set up a remote
front end, but can't if
network activity is going to mess up recording on the back end. I tried
increasing the priority
of mythbackend, but that didn't help.
Thanks.
- Jason
Some possibly helpful information about my system is below.
[root at localhost root]# uname -a
Linux localhost.localdomain 2.4.21 #1 Sat Aug 16 20:23:40 EDT 2003 i686
i686 i386 GNU/Linux
[root at localhost root]# cat /proc/interrupts
CPU0
0: 4881019 XT-PIC timer
1: 330 XT-PIC keyboard
2: 0 XT-PIC cascade
3: 0 XT-PIC usb-uhci
4: 786891 XT-PIC bttv, btaudio
5: 238720 XT-PIC usb-uhci, EMU10K1
7: 93901 XT-PIC wlan0
8: 1 XT-PIC rtc
9: 0 XT-PIC ehci-hcd
10: 161518 XT-PIC aic7xxx
11: 3409072 XT-PIC usb-uhci, nvidia
12: 29 XT-PIC PS/2 Mouse
14: 374337 XT-PIC ide0
15: 284654 XT-PIC ide1
NMI: 0
ERR: 0
[root at localhost root]# lsmod
Module Size Used by Tainted: P
snd-pcm-oss 44548 1 (autoclean)
snd-mixer-oss 16176 0 (autoclean) [snd-pcm-oss]
btaudio 12876 1 (autoclean)
snd-emu10k1 85364 1 (autoclean)
snd-pcm 85632 0 (autoclean) [snd-pcm-oss snd-emu10k1]
snd-timer 19684 0 (autoclean) [snd-pcm]
snd-util-mem 3096 0 (autoclean) [snd-emu10k1]
snd-page-alloc 9908 0 (autoclean) [snd-emu10k1 snd-pcm]
snd-ac97-codec 58572 0 (autoclean) [snd-emu10k1]
snd-rawmidi 18688 0 (autoclean) [snd-emu10k1]
snd-seq-device 6204 0 (autoclean) [snd-emu10k1 snd-rawmidi]
snd-hwdep 7104 0 (autoclean) [snd-emu10k1]
snd 45956 0 (autoclean) [snd-pcm-oss
snd-mixer-oss snd-emu10k1 snd-pcm snd-timer snd-util-mem snd-ac97-codec
snd-rawmidi snd-seq-device snd-hwdep]
ide-cd 35648 0 (autoclean)
cdrom 33696 0 (autoclean) [ide-cd]
agpgart 46912 3 (autoclean)
nvidia 1670752 10 (autoclean)
tuner 12544 1 (autoclean)
tvaudio 15740 0 (autoclean) (unused)
msp3400 19948 1 (autoclean)
bttv 82624 4 (autoclean)
videodev 8288 5 (autoclean) [bttv]
i2c-algo-bit 8872 1 (autoclean) [bttv]
soundcore 6436 7 (autoclean) [btaudio snd bttv]
lirc_i2c 4480 1 (autoclean)
i2c-core 19108 0 (autoclean) [tuner tvaudio msp3400
bttv i2c-algo-bit lirc_i2c]
lirc_dev 9312 1 (autoclean) [lirc_i2c]
lp 8996 0 (autoclean)
parport 37056 0 (autoclean) [lp]
autofs 13364 0 (autoclean) (unused)
prism2_pci 73280 1 (autoclean)
p80211 22956 1 [prism2_pci]
ipt_REJECT 4024 6 (autoclean)
iptable_filter 2412 1 (autoclean)
ip_tables 14968 2 [ipt_REJECT iptable_filter]
microcode 4668 0 (autoclean)
aic7xxx 141268 1 (autoclean)
sd_mod 13132 2 (autoclean)
scsi_mod 107220 2 (autoclean) [aic7xxx sd_mod]
loop 11832 0 (autoclean)
lvm-mod 62176 7
keybdev 2944 0 (unused)
mousedev 5556 1
hid 22244 0 (unused)
input 5760 0 [keybdev mousedev hid]
usb-uhci 26412 0 (unused)
ehci-hcd 20072 0 (unused)
usbcore 78080 1 [hid usb-uhci ehci-hcd]
ext3 70208 11
jbd 51924 11 [ext3]
[root at localhost root]# cat /proc/pci
PCI devices found:
Bus 0, device 0, function 0:
Host bridge: Intel Corp. 82845 845 (Brookdale) Chipset Host Bridge
(rev 17).
Prefetchable 32 bit memory at 0xf8000000 [0xfbffffff].
Bus 0, device 1, function 0:
PCI bridge: Intel Corp. 82845 845 (Brookdale) Chipset AGP Bridge
(rev 17).
Master Capable. Latency=64. Min Gnt=10.
Bus 0, device 29, function 0:
USB Controller: Intel Corp. 82801DB USB (Hub #1) (rev 1).
IRQ 11.
I/O at 0xe800 [0xe81f].
Bus 0, device 29, function 1:
USB Controller: Intel Corp. 82801DB USB (Hub #2) (rev 1).
IRQ 3.
I/O at 0xe880 [0xe89f].
Bus 0, device 29, function 2:
USB Controller: Intel Corp. 82801DB USB (Hub #3) (rev 1).
IRQ 5.
I/O at 0xec00 [0xec1f].
Bus 0, device 29, function 7:
USB Controller: Intel Corp. 82801DB USB EHCI Controller (rev 1).
IRQ 9.
Non-prefetchable 32 bit memory at 0xfebffc00 [0xfebfffff].
Bus 0, device 30, function 0:
PCI bridge: Intel Corp. 82801BA/CA/DB PCI Bridge (rev 129).
Master Capable. No bursts. Min Gnt=6.Max Lat=4.
Bus 0, device 31, function 0:
ISA bridge: Intel Corp. 82801DB ISA Bridge (LPC) (rev 1).
Bus 0, device 31, function 1:
IDE interface: Intel Corp. 82801DB ICH4 IDE (rev 1).
IRQ 5.
I/O at 0xffa0 [0xffaf].
Non-prefetchable 32 bit memory at 0x20000000 [0x200003ff].
Bus 0, device 31, function 3:
SMBus: Intel Corp. 82801DB SMBus (rev 1).
IRQ 10.
I/O at 0xe480 [0xe49f].
Bus 1, device 0, function 0:
VGA compatible controller: nVidia Corporation NV17 [GeForce4 MX420]
(rev 163).
IRQ 11.
Master Capable. Latency=248. Min Gnt=5.Max Lat=1.
Non-prefetchable 32 bit memory at 0xfd000000 [0xfdffffff].
Prefetchable 32 bit memory at 0xf0000000 [0xf3ffffff].
Prefetchable 32 bit memory at 0xf4680000 [0xf46fffff].
Bus 2, device 0, function 0:
Network controller: Harris Semiconductor Prism 2.5 Wavelan chipset
(rev 1).
IRQ 7.
Master Capable. Latency=64.
Prefetchable 32 bit memory at 0xf47ff000 [0xf47fffff].
Bus 2, device 1, function 0:
Multimedia video controller: Brooktree Corporation Bt878 Video
Capture (rev 17).
IRQ 4.
Master Capable. Latency=64. Min Gnt=16.Max Lat=40.
Prefetchable 32 bit memory at 0xf47fd000 [0xf47fdfff].
Bus 2, device 1, function 1:
Multimedia controller: Brooktree Corporation Bt878 Audio Capture
(rev 17).
IRQ 4.
Master Capable. Latency=64. Min Gnt=4.Max Lat=255.
Prefetchable 32 bit memory at 0xf47fe000 [0xf47fefff].
Bus 2, device 2, function 0:
Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev
10).
IRQ 5.
Master Capable. Latency=64. Min Gnt=2.Max Lat=20.
I/O at 0xd480 [0xd49f].
Bus 2, device 2, function 1:
Input device controller: Creative Labs SB Live! MIDI/Game Port (rev
10).
Master Capable. Latency=64.
I/O at 0xdc00 [0xdc07].
Bus 2, device 12, function 0:
SCSI storage controller: Adaptec AHA-2940U/UW/D / AIC-7881U (rev 0).
IRQ 10.
Master Capable. Latency=64. Min Gnt=8.Max Lat=8.
I/O at 0xd800 [0xd8ff].
Non-prefetchable 32 bit memory at 0xfeaff000 [0xfeafffff].
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