nick.b 0 Posted January 14, 2006 I'm trying to capture uncompressed .avi files (roughly 21 MB/s) of data to a network server. The program I'm using lets me select a drive in XP to write to, it is already mapped to our server, so I imagine this is using SMB for data transfer. The motherboard is a SuperMicro X5DAL-TG2 and has Dual Gigabit on the board. The computer is running XP, has two Xeons, and I think 2 gigs of RAM. This computer connects directly to a 3com Baseline switch (2816-SFP) which is also connected to the server. The server has dual gigabit on the motherboard as well and over 1.5 TB of space in a RAID 5 setup. Writing rates should be about 70 MB/s according to the manufacturer. I setup both the client and the server to team their ports using GEC (which I think is now just static link aggregation). Set the switch to trunk their connecting ports. I'm only able to reach speeds of 21 MB/s which is right there but not good enough because after 12 minutes the hardware buffer on the capture card fills up causing the capture to drop frames and fail. I talked to the manufacturer of the card and they just say that they don't recommend capturing to a network drive. However I can easily capture to a network drive real-time if a encode to MPEG real-time, causing the data to be transfered to be minimal. I've been beating my head against a wall to figure this out. I've tried increasing the TCP/IP window size in the registry. I heard about a tweak to the TCP/IP buffer size that I may need to try. I've disabled all unnecessary hardware, and disabled a ton of services that are not needed. Anybody have any ideas or maybe even what I should be able to achieve in terms of data thorughput (not wire speed)? Thanks in advance for any help. Share this post Link to post
thatsteveguy 0 Posted January 14, 2006 My guess would be that yes you will have less trouble doing a network capture with an MPEG because it is compressed. An uncompressed AVI is alot of bandwith being sucked up. I'm not sure you can get around that but if I am wrong someone will let me know soon enough! lol S Share this post Link to post
