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- Path: giskard.demon.co.uk!dale
- From: dale@giskard.demon.co.uk (Dale Shuttleworth)
- Newsgroups: comp.dcom.modems
- Subject: Re: UART 16650
- Date: Sat, 24 Feb 1996 18:57:01 GMT
- Organization: Dale's home Linux box.
- Message-ID: <DnAnB1.Mr@giskard.demon.co.uk>
- References: <31214F47.1FFC@ozemail.com.au> <4fsr22$4o1@centurio.m30x.nbg.scn.de> <4gf6b3$v5d@mips.pfalz.de> <4gkaj5$i5f@hg.oro.net>
- X-NNTP-Posting-Host: giskard.demon.co.uk
- X-Newsreader: TIN [UNIX 1.3 950824BETA PL0]
-
- Hi,
-
- Ed Starry (estarry@oro.net) wrote:
-
- [...]
-
- : These large FIFO buffer sizes and we still have to suffer with everyone
- : using an 8250 for uploading. Who cares how big a Rx Buffer is if no one will
- : use these big FIFO buffers to Tx/Upload with!
-
- ??? Large receive buffer sizes are primarily there to deal with
- interrupt latency causing characters to to dropped. Since it is
- impossible to drop characters on transmit you don't really need any
- buffering at all.
-
- If you have a really loaded system doing polled transmission then I
- suppose big transmit buffers are useful, otherwise they're a waste of
- time. This is especially true since we usually transmit data to the
- modem at far higher rates rather than it can actually send it.
-
- Dale.
- --
- ******************************************************************************
- * Dale Shuttleworth *
- * Email: dale@giskard.demon.co.uk *
- ******************************************************************************
-