1998-01-09 21:45:24 +03:00
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$NetBSD: whatis,v 1.5 1998/01/09 18:47:16 perry Exp $
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1997-10-07 00:54:34 +04:00
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This is the third public release of NetBSD for the DECstation and
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DECsystem family of computers.
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1996-09-15 23:06:40 +04:00
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1997-10-07 00:54:34 +04:00
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This release includes support for either mips1 (r2000, r3000) and
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mips3 (r4000, r4400, r4600) CPUs. mips1 and mips3 support can be
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configured into a single kernel. NetBSD 1.3 can be installed onto
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DECstation 5000/50, 5000/150, 5000/260, or 5900 models, as well as all
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previously-supported hardware.
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Though stable NetBSD/pmax snapshots with shared-library support have
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been available for over a year, this is the first full NetBSD/pmax
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release to ship with ELF shared libraries. Much of the user-space
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support for this is due to work by Per Fogelstrom (pefo@OpenBSD.ORG)
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and ported to NetBSD by Manuel Bouyer.
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Ultrix emulation for Internet applications is improved over NetBSD
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1.2. The Ultrix `ifconfig' command and multicast applications now
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work in Ultrix compatibility mode. A ecoff-format NetBSD kernel in an
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1997-10-31 20:26:25 +03:00
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Ultrix root filesystem should boot multi-user, though this is not
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1997-10-07 00:54:34 +04:00
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recommended as an installation method.
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A bug in mips interrupt handling from 4.4BSD, which could cause
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`remrunque' panics under heavy load in both NetBSD prior to 1.2E and
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OpenBSD, is fixed in this release.
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There are yet more enhancements for the 4.4bsd-Lite/pmax SCSI drivers,
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which now correctly probes newer, faster, SCSI-2 disks, and handles
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large transfers (up to 64K) on 3100s. Intermediate copies of disk I/O
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on IOASIC-based machines are eliminated, yielding a modest improvement
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on old disks like the rz25, and a bigger improvement on faster disks.
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Kernel performance tuning includes lower system call overhead, a
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faster bcopy() routine, faster IP checksumming code, and other
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imrprovemnts. These combine to show a dramatic (e.g., 1.5x-2.5x)
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improvement on microbenchmarks like the lmbench suite, and a modest
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improvement on larger benchmarks like kernel builds.
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