Hardware:
Dell Studio Minitower
Intel Quad 8200
8gb RAM
2x 1 TB hard drives
PV-981 PCI-E card
Ubuntu 9.04 server (headless)
I have four identical systems set up with one of them having 2 cards for 16 cameras (the other 3 with 8 cams). The load is minimal, the computer, Ubuntu, and Zoneminder work great.
My only problem currently seems to be that they will only record at 2.56 fps. Any idea why?
I set up the first one about two months ago, and I just set up the other 3 this morning. I see the same 2.56 fps on all 4. The PV-981 is 120 fps, 4 chips, 2 channels per chip.
120 / 4 / 2 = 15 fps if I understand correctly. Am I wrong? If not, what should I look for and how should I configure ZM or Ubuntu?
2.56 fps <-- Why? (semi solved)
2.56 fps <-- Why? (semi solved)
Last edited by quietas on Tue Oct 06, 2009 11:20 pm, edited 1 time in total.
I configured it with the --enable-mmap=yes settings rather than the shared memory settings. Could this be throwing things for a loop?
It's odd though, because it effects the systems with 1 card and 8 cameras, or the 1 other with 2 cards and 16 cameras. All 4 systems are 2.56 fps, I assume I have the wrong settings for the card, but where should I look?
It's odd though, because it effects the systems with 1 card and 8 cameras, or the 1 other with 2 cards and 16 cameras. All 4 systems are 2.56 fps, I assume I have the wrong settings for the card, but where should I look?
It's a common misconception people have that they will get
"camera fps" = "capture chip fps" / "# of cameras on chip". To make matters worse, some manufactures and some vendors advertise this.
The truth is there is a lag when a capture chip on a card changes ports. This lag cuts down on the fps you can get when you have more than one camera on a capture chip.
~2.5 fps is the frame rate I get on my pv-155 with 2 cameras on each chip. If I change "CAPTURES_PER_FRAME" from 2 to 1, I'll get 5 fps per frame but with visual artifacts.
"camera fps" = "capture chip fps" / "# of cameras on chip". To make matters worse, some manufactures and some vendors advertise this.
The truth is there is a lag when a capture chip on a card changes ports. This lag cuts down on the fps you can get when you have more than one camera on a capture chip.
~2.5 fps is the frame rate I get on my pv-155 with 2 cameras on each chip. If I change "CAPTURES_PER_FRAME" from 2 to 1, I'll get 5 fps per frame but with visual artifacts.
That's the same thing I ran into and the reason I had adjusted it to 2 captures per frame. I guess this is just a limitation of the hardware, but so freaking poorly advertised. If I had known this I would have bought 8 chip cards.
So it seems a card with two cams per chip will instead of reducing the fps by 1/2, it will actually be reduced to 1/6th with captures at 1, and 1/12 at 2.
I guess I'll live with 2.5fps or 5 if it does not artifact on me.
So it seems a card with two cams per chip will instead of reducing the fps by 1/2, it will actually be reduced to 1/6th with captures at 1, and 1/12 at 2.
I guess I'll live with 2.5fps or 5 if it does not artifact on me.
I had forgot to mention that I did not bother setting the modprobe.d/options since the card was being detected correctly. At least I think it is.DREMA wrote:Also, do you have the correct settings for your cards?
Code: Select all
quietas@zone:~$ dmesg |grep bttv
[ 7.005717] bttv: driver version 0.9.17 loaded
[ 7.005719] bttv: using 8 buffers with 2080k (520 pages) each for capture
[ 7.005763] bttv: Bt8xx card found (0).
[ 7.005779] bttv 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 7.005792] bttv0: Bt878 (rev 17) at 0000:02:00.0, irq: 16, latency: 64, mmio: 0xfdeff000
[ 7.006343] bttv0: detected: Provideo PV150A-1 [card=98], PCI subsystem ID is aa00:1460
[ 7.006346] bttv0: using: ProVideo PV150 [card=98,autodetected]
[ 7.006380] bttv0: gpio: en=00000000, out=00000000 in=00ffffff [init]
[ 7.006440] bttv0: tuner absent
[ 7.006480] bttv0: registered device video0
[ 7.006497] bttv0: registered device vbi0
[ 7.006524] bttv0: PLL: 28636363 => 35468950 .. ok
[ 7.050053] bttv: Bt8xx card found (1).
[ 7.050068] bttv 0000:02:01.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 7.050080] bttv1: Bt878 (rev 17) at 0000:02:01.0, irq: 17, latency: 64, mmio: 0xfdefd000
[ 7.050120] bttv1: detected: Provideo PV150A-2 [card=98], PCI subsystem ID is aa01:1461
[ 7.050123] bttv1: using: ProVideo PV150 [card=98,autodetected]
[ 7.050157] bttv1: gpio: en=00000000, out=00000000 in=00ffffff [init]
[ 7.050207] bttv1: tuner absent
[ 7.050250] bttv1: registered device video1
[ 7.050270] bttv1: registered device vbi1
[ 7.050296] bttv1: PLL: 28636363 => 35468950 .. ok
[ 7.090038] bttv: Bt8xx card found (2).
[ 7.090053] bttv 0000:02:02.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[ 7.090065] bttv2: Bt878 (rev 17) at 0000:02:02.0, irq: 18, latency: 64, mmio: 0xfdefb000
[ 7.090089] bttv2: detected: Provideo PV150A-3 [card=98], PCI subsystem ID is aa02:1462
[ 7.090091] bttv2: using: ProVideo PV150 [card=98,autodetected]
[ 7.090116] bttv2: gpio: en=00000000, out=00000000 in=00ffffff [init]
[ 7.090163] bttv2: tuner absent
[ 7.090214] bttv2: registered device video2
[ 7.090234] bttv2: registered device vbi2
[ 7.090262] bttv2: PLL: 28636363 => 35468950 .. ok
[ 7.130044] bttv: Bt8xx card found (3).
[ 7.130059] bttv 0000:02:03.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
[ 7.130071] bttv3: Bt878 (rev 17) at 0000:02:03.0, irq: 19, latency: 64, mmio: 0xfdef9000
[ 7.130095] bttv3: detected: Provideo PV150A-4 [card=98], PCI subsystem ID is aa03:1463
[ 7.130098] bttv3: using: ProVideo PV150 [card=98,autodetected]
[ 7.130133] bttv3: gpio: en=00000000, out=00000000 in=00ffffff [init]
[ 7.130181] bttv3: tuner absent
[ 7.130235] bttv3: registered device video3
[ 7.130252] bttv3: registered device vbi3
[ 7.130278] bttv3: PLL: 28636363 => 35468950 .. ok
[64453.822661] bttv0: PLL can sleep, using XTAL (28636363).
[64491.245636] bttv1: PLL can sleep, using XTAL (28636363).
[64530.801578] bttv2: PLL can sleep, using XTAL (28636363).
[64569.909602] bttv3: PLL can sleep, using XTAL (28636363).
