Re: Video fileserver - Need some input

2007-05-09 Thread Chris Slothouber
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Hash: SHA1

On 2007-05-09 08:21, Andreas Widerøe Andersen wrote:
 I'm planning a new fileserver for my post-production facility and need some
 input regarding filesystems and network setup. I've been a FreeBSD fan for
 almost 10 years now and will try to build this server based on the latest
 stable FreeBSD version, allthough most machines here run WinXP.

 In addition to this 1-5 machines will have access to the fileserver through
 a shared Gigabit network connection for making DVDs and use the files as
 source for editing. In short: There will be two direct 1Gb network
 connections and one shared 1Gb connection. Will the server hold up?

Depending on the resolution and frame rate of your video, GigE is
nowhere near fast enough a pipe for live video manipulation.  This is
certainly the case when dealing with broadcast video.

- --
Chris Slothouber ([EMAIL PROTECTED]) -=- Mercenary Sysadmin
BIZ: http://www.hier7.com -=- building.better.ideas
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Re: Video fileserver - Need some input

2007-05-09 Thread Andreas Widerøe Andersen

On 5/9/07, Chris Slothouber [EMAIL PROTECTED] wrote:


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Hash: SHA1

On 2007-05-09 08:21, Andreas Widerøe Andersen wrote:
 I'm planning a new fileserver for my post-production facility and need
some
 input regarding filesystems and network setup. I've been a FreeBSD fan
for
 almost 10 years now and will try to build this server based on the
latest
 stable FreeBSD version, allthough most machines here run WinXP.

 In addition to this 1-5 machines will have access to the fileserver
through
 a shared Gigabit network connection for making DVDs and use the files as
 source for editing. In short: There will be two direct 1Gb network
 connections and one shared 1Gb connection. Will the server hold up?

Depending on the resolution and frame rate of your video, GigE is
nowhere near fast enough a pipe for live video manipulation.  This is
certainly the case when dealing with broadcast video.



We're only working in Standard Definition PAL (see the datarates in my first
post). I have done DV capture tests before over the network and that worked
fine. We're already having three machines feeding from one server today and
that works fine too allthough it is a bit slow. We're mainly copying files
to local drives, but DVD creation happens straight from the server.

Cheers,
Andreas
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Re: Video fileserver - Need some input

2007-05-09 Thread Chris Slothouber
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On 2007-05-09 10:12, Andreas Widerøe Andersen wrote:
 On 5/9/07, Chris Slothouber [EMAIL PROTECTED] wrote:
 On 2007-05-09 08:21, Andreas Widerøe Andersen wrote:
 I'm planning a new fileserver for my post-production facility and need
 some
 input regarding filesystems and network setup. I've been a FreeBSD fan
 for
 almost 10 years now and will try to build this server based on the
 latest
 stable FreeBSD version, allthough most machines here run WinXP.
 In addition to this 1-5 machines will have access to the fileserver
 through
 a shared Gigabit network connection for making DVDs and use the files as
 source for editing. In short: There will be two direct 1Gb network
 connections and one shared 1Gb connection. Will the server hold up?
 Depending on the resolution and frame rate of your video, GigE is
 nowhere near fast enough a pipe for live video manipulation.  This is
 certainly the case when dealing with broadcast video.
 
 
 We're only working in Standard Definition PAL (see the datarates in my first
 post). I have done DV capture tests before over the network and that worked
 fine. We're already having three machines feeding from one server today and
 that works fine too allthough it is a bit slow. We're mainly copying files
 to local drives, but DVD creation happens straight from the server.

My apologies, I totally glazed over that bit.

Samba does have some performance issues out of the box (see Solon Luigi
Lutz's thread from 04-10, similar situation but a little bit more later
in the game).  I believe there are a few tuning options for
Samba-FreeBSD that might be appropriate, esp. wrt. multi-threading
CIFS.  Google seems to show a lot of hits for that.

Sorry again for missing the info you provided.  I hope this helps.

- --
Chris Slothouber ([EMAIL PROTECTED]) -=- Mercenary Sysadmin
BIZ: http://www.hier7.com -=- building.better.ideas
PGP: 7A83 F021 5AC3 4BD7 6738 21D8 B348 0B16 79C0 C27F
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Version: GnuPG v1.4.7 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

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Re: Video fileserver - Need some input

2007-05-09 Thread Jeff Mohler

45MB/sec is too fast for GigE?


Wha?



On 5/9/07, Chris Slothouber [EMAIL PROTECTED] wrote:


-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

On 2007-05-09 08:21, Andreas Widerøe Andersen wrote:
 I'm planning a new fileserver for my post-production facility and need
some
 input regarding filesystems and network setup. I've been a FreeBSD fan
for
 almost 10 years now and will try to build this server based on the
latest
 stable FreeBSD version, allthough most machines here run WinXP.

 In addition to this 1-5 machines will have access to the fileserver
through
 a shared Gigabit network connection for making DVDs and use the files as
 source for editing. In short: There will be two direct 1Gb network
 connections and one shared 1Gb connection. Will the server hold up?

Depending on the resolution and frame rate of your video, GigE is
nowhere near fast enough a pipe for live video manipulation.  This is
certainly the case when dealing with broadcast video.

- --
Chris Slothouber ([EMAIL PROTECTED]) -=- Mercenary Sysadmin
BIZ: http://www.hier7.com -=- building.better.ideas
PGP: 7A83 F021 5AC3 4BD7 6738 21D8 B348 0B16 79C0 C27F
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Version: GnuPG v1.4.7 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

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=lzTn
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Re: Video fileserver - Need some input

2007-05-09 Thread Jeff Mohler

Chris: Accept my fallin on my sword..I didnt see your reply before I sent.

;)



On 5/9/07, Chris Slothouber [EMAIL PROTECTED] wrote:


-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

On 2007-05-09 10:12, Andreas Widerøe Andersen wrote:
 On 5/9/07, Chris Slothouber [EMAIL PROTECTED] wrote:
 On 2007-05-09 08:21, Andreas Widerøe Andersen wrote:
 I'm planning a new fileserver for my post-production facility and need
 some
 input regarding filesystems and network setup. I've been a FreeBSD fan
 for
 almost 10 years now and will try to build this server based on the
 latest
 stable FreeBSD version, allthough most machines here run WinXP.
 In addition to this 1-5 machines will have access to the fileserver
 through
 a shared Gigabit network connection for making DVDs and use the files
as
 source for editing. In short: There will be two direct 1Gb network
 connections and one shared 1Gb connection. Will the server hold up?
 Depending on the resolution and frame rate of your video, GigE is
 nowhere near fast enough a pipe for live video manipulation.  This is
 certainly the case when dealing with broadcast video.


 We're only working in Standard Definition PAL (see the datarates in my
first
 post). I have done DV capture tests before over the network and that
worked
 fine. We're already having three machines feeding from one server today
and
 that works fine too allthough it is a bit slow. We're mainly copying
files
 to local drives, but DVD creation happens straight from the server.

My apologies, I totally glazed over that bit.

Samba does have some performance issues out of the box (see Solon Luigi
Lutz's thread from 04-10, similar situation but a little bit more later
in the game).  I believe there are a few tuning options for
Samba-FreeBSD that might be appropriate, esp. wrt. multi-threading
CIFS.  Google seems to show a lot of hits for that.

Sorry again for missing the info you provided.  I hope this helps.

- --
Chris Slothouber ([EMAIL PROTECTED]) -=- Mercenary Sysadmin
BIZ: http://www.hier7.com -=- building.better.ideas
PGP: 7A83 F021 5AC3 4BD7 6738 21D8 B348 0B16 79C0 C27F
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Re: Video fileserver - Need some input

2007-05-09 Thread Jeff Mohler

The _main_ think I can think of, is windows in a SINGLE threaded movement of
data via CIFS, is gonna limit you to about 17MB/sec.

Andreas..have you tested this via CIFS/Redirector and been able to sustain
the performance that you need before going with Samba (another performance
layer issue)

On 5/9/07, Chris Slothouber [EMAIL PROTECTED] wrote:


-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

On 2007-05-09 10:12, Andreas Widerøe Andersen wrote:
 On 5/9/07, Chris Slothouber [EMAIL PROTECTED] wrote:
 On 2007-05-09 08:21, Andreas Widerøe Andersen wrote:
 I'm planning a new fileserver for my post-production facility and need
 some
 input regarding filesystems and network setup. I've been a FreeBSD fan
 for
 almost 10 years now and will try to build this server based on the
 latest
 stable FreeBSD version, allthough most machines here run WinXP.
 In addition to this 1-5 machines will have access to the fileserver
 through
 a shared Gigabit network connection for making DVDs and use the files
as
 source for editing. In short: There will be two direct 1Gb network
 connections and one shared 1Gb connection. Will the server hold up?
 Depending on the resolution and frame rate of your video, GigE is
 nowhere near fast enough a pipe for live video manipulation.  This is
 certainly the case when dealing with broadcast video.


 We're only working in Standard Definition PAL (see the datarates in my
first
 post). I have done DV capture tests before over the network and that
worked
 fine. We're already having three machines feeding from one server today
and
 that works fine too allthough it is a bit slow. We're mainly copying
files
 to local drives, but DVD creation happens straight from the server.

My apologies, I totally glazed over that bit.

Samba does have some performance issues out of the box (see Solon Luigi
Lutz's thread from 04-10, similar situation but a little bit more later
in the game).  I believe there are a few tuning options for
Samba-FreeBSD that might be appropriate, esp. wrt. multi-threading
CIFS.  Google seems to show a lot of hits for that.

Sorry again for missing the info you provided.  I hope this helps.

- --
Chris Slothouber ([EMAIL PROTECTED]) -=- Mercenary Sysadmin
BIZ: http://www.hier7.com -=- building.better.ideas
PGP: 7A83 F021 5AC3 4BD7 6738 21D8 B348 0B16 79C0 C27F
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Re: Video fileserver - Need some input

2007-05-09 Thread Eduardo Morras
At 14:21 09/05/2007, you wrote:
I'm planning a new fileserver for my post-production facility and need some
input regarding filesystems and network setup. I've been a FreeBSD fan for
almost 10 years now and will try to build this server based on the latest
stable FreeBSD version, allthough most machines here run WinXP.

We have an internal 1 Gigabit network here and in addition to this the video
fileserver will have two direct NIC connections to two WinXP capture
stations. I will most likely be using a Raid-0 or a Raid-5 setup with SATA
drives. The system will have something like 4-8 TB of HDD space.

I'm not so afraid of loosing data, but we need a system that is fast and
will allow capture from two external Windows XP machines through direct
Gigabit ethernet. The datarates are 8 bit @ 720 x 576 @ 25fps = 20 MB
per/sec, or 70 GB per/hr.
10 bit @ 720 x 576 @ 25fps = 26 MB per/sec, or 93 GB per/hr.

Are you sure? 8 bits per pixel is too low. For RGB i suggest you use a 8 bit 
per color (R,G and B) or 24 bit per pixel. Or if you work under YUV/YcrCb 
spaces a 12bit as minimum (YUV12 or 4:2:0 space). Final numbers for PAL RGB are 
24 x 720 x 576 x 25 = 29'96 MB/sec (Your 8x720x576x25 are 9'88MB/sec, not 20) 
and for YUV12 14'98 MB/sec.

You can use a lossless videocodec for capture, huffyuv is the faster/better and 
you have a native Windows VfW version. All current computers can compress 
with it on the fly (my 3-4 years old 2Ghz Athlon shows 70 fps) and can halve 
the data rate. In the freebsd you can use ffmpeg based apps for decode it (and 
encode), that's all apps.

If you can work with lossy video codec use x264 on the Windows side, tuned for 
on the fly / live compression, if not you will lost frames. Again, ffmpeg 
can decode it on freebsd. You can get 1 MB/sec or less. Check dirac (don't know 
if a freebsd port works) and if you want to pay, try VP7, the big brother of 
macromedia flash codec.

In addition to this 1-5 machines will have access to the fileserver through
a shared Gigabit network connection for making DVDs and use the files as
source for editing. In short: There will be two direct 1Gb network
connections and one shared 1Gb connection. Will the server hold up?

Depends on how many readers attacks the files. It's more a bus problem than a 
OS. If video data is compressed the disk will read/write less and you can serve 
faster.

Any other recommendations are very welcome.

Don't use RAID-0. If there is any problem everything become lost. 

Thanks!

Regards,
Andreas W. Andersen
HTH

N.B. huffyuv, x264 and dirac codecs are opensource. VP7 is On2 Tech. 


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