Messages in this thread |  | | Subject | Re:Little Lance Patch & Cyrix | Date | Sat, 18 Jan 97 13:57:34 CET | From | Tekno Soft Snc <> |
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la> For an ISA bus machine however (with no power la> saving stuff involved) they are the fastest cards la> you'll get. la> When I built a high spec 386 machine (thats a la> while ago) it was built with a bus mastering SCSI la> controller (AHA1542), and bus mastering Lance. la> Under very heavy disk load the lance lost packets. la> It still outperformed an NE2000 overall
If other ISA cards uses bus mastering, the lance cards have problem with long latency. My previous ISA lance card have the same problem with the Qic02 streaming tape. During a backup I get many lost packets and bus master arbitration failure, so I buy a new PCI lance card :-)) !
la> On PCI DMA bandwidth is very rarely an issue. I've la> only seen one report of PCI lance people seeing la> that message and that was using a frame grabber la> from hell writing pretty much raw NTSC video onto la> a disk array.
The PCI lance have a "Latency Register", so we can tune it with an appropriate value.
Roberto Fichera - email MC3641@mclink.it
Xmeo ver.3.0 Alpha for Linux & Windows
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