Re: Linux Sense buffer (was: sane 0.71 and microtek E3)

David Mosberger-Tang (David.Mosberger@acm.org)
Mon, 30 Mar 1998 21:25:59 -0800

Hi Sean,

>>>>> On Sun, 29 Mar 1998 16:36:45 -0700, Sean Reifschneider <jafo@tummy.com> said:

Sean> In the last 3 years and hundreds of copies of our software on
Sean> Linux, I don't recall even ONE complaint about the scanning
Sean> speed.

Try a Mustek scanner for example. HP scanners are much better behaved
than most of the el-cheapo scanners. E.g., with my Mustek scanner,
increasing scan buffer size by a factor of 4 will decrease color scan
times by a factor of four (scan time is dominated by the number of
backtracks the scanner has to do due to a full scan buffer).

But I agree it's bad taste to ship pre-compiled binaries assuming a
128KB kernel buffer. The real problem is that the Linux kernel
doesn't allow to determine what the limit is. I'll see whether we
could have that fixed for Linux 2.2.

--david

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