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- Path: news.mel.aone.net.au!usenet
- From: mpa@iig.com.au (Mark P Allen)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Proper mask, transfer rate, etc.
- Date: 16 Apr 1996 14:42:07 GMT
- Message-ID: <1997.6680T1431T1716@iig.com.au>
- References: <4k1740$ddo@hobbes.compusult.nf.ca> <4k1lkb$a3j@freenet-news.carleton.ca>
- <1658.6677T638T2771@iig.com.au> <dalec.06nm@zorro.amitrix.com>
- NNTP-Posting-Host: cnsta03.iig.com.au
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-
-
- On 15-Apr-96 14:12:44, Dale Currie wrote:
-
- >> The Warp Engine, by default, applies the following to a disk RDB:
- >> MaxTransfer: 2147483647
- >> Mask: 0xffffffff
- >>
- >> While the filesystem addressing is limited to 2GB, the actual device
- >> limitation is 4GB. I am using the above values on all my
- >> drives/partitions, including a 4GB partition for use with VLAB Motion
- >> (I'm glad to say the problems I was experiencing with VLAB, and we were
- >> discussing recently, appear to have been fixed by the warpram utility).
-
- DC> Yes, on looking at some of the HDPrep scripts on the Install disk later,
- DC> I noticed that they also use this value. It seems strange, since the
- DC> partition limit is 2GB for FFS that they would use a 4GB value, but as
- DC> long as it doesn't cause a problem.... I can see why you might use that
- DC> for the VLAB with a 4GB partition, but then doesn't it use it's own
- DC> filesystem?
-
- Yes, it does. It was only with v3.0 of MovieShop that the partition limit
- for VLAB was raised from 2GB to 4GB.
-
- Since the WARP always installs these default figures for best performance,
- is it possible that the limit is the theoretical addressing limit (4GB,
- eg., for RAM and partitions) rather then the actual filesystem limit
- (2GB)?
-
- >> Someone told me that the "c", "e" and "f" symbols represented byte, word or
- >> long offsets (I'm getting way out of my depth here though) according to the
- >> host system (eg., 16 or 32-bit etc). (?)
-
- DC> Yes, it would be interesting to see some test numbers on large newer
- DC> drives to see if there is a difference at higher speed transfers.
-
- I think I did test it once, while trying to resolve the "flashing frames"
- problem I've mentioned previously. I can't remember the actual value I
- used ("e" I think) but remember that the difference, if any, was minimal.
-
- Regards,
-
- Mark
-
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