Project Home
Project Home
Wiki
Wiki
Discussion Forums
Discussions
Project Information
Project Info
BroadcastCommunity.qnx.com will be offline from May 31 6:00pm until June 2 12:00AM for upcoming system upgrades. For more information please go to https://community.qnx.com/sf/discussion/do/listPosts/projects.bazaar/discussion.bazaar.topc28418
Forum Topic - FTP slows down when rx drop packets. Nagle for TCP/SWS: Page 1 of 19 (19 Items)
   
FTP slows down when rx drop packets. Nagle for TCP/SWS  
Hi, 

We encounter a FTP slowed down problem. Need help on this.

Problem Description:
- FTP large file (>40M) transfer slows down significantly after a couple iterations.
The more transfer, the worse the transfer.
- When this happens, nicinfo shows, the Ethernet Driver (8572 TSEC) driver drops packets, the more it drops, the slower 
the transfer. In some cases, FTP failed.


Question:
- The symptom looks like TCP SWS. Is the Nagle algorithm implemented in the io-pkt?
- I use MDI-AutoNegotiation and MDI_SetSpeedDuplex to control the TSEC. Any known problem with these routines.
- Any quick way to control the FTP/TCP for this problem?

Appreciated very much for a quick answer.

Regards,
Sherry