FAQ diffs
Conor P. Cahill
cpcahil at virtech.uucp
Mon Mar 11 11:26:49 AEST 1991
6c6
< Supersedes: <1990Nov05.012005.18284 at virtech.uucp>
---
> Supersedes: <1991Feb03.153747.25359 at virtech.uucp>
20c20
< Last Modified: $Id: freq.ques,v 1.6 91/02/03 10:30:15 cpcahil Exp $
---
> Last Modified: $Id: freq.ques,v 1.7 91/03/10 20:21:40 cpcahil Exp $
50a51,52
> 26. What dos-under-unix product will work with ESIX?
> 27. How do I correctly configure the various STREAMS parameters?
95,97c97,110
< However, System V Release 4 (SVR4) binaries will not run on System V
< Release * (where * is less than 4.0) systems.
<
---
> Contact information for the various OS manufacturers:
>
> PRODUCT VENDOR Phone contact (sales)
> ---------------------- ---------------------- ---------------------
> AT&T UNIX AT&T ???
> DELL UNIX (SVR3&4) DELL Computer Corp 800-426-5150
> ESIX Everex 415-683-2068
> ISC UNIX (SVR3) Interactive Systems ???
> Mach Mt Xinu ???
> Microport UNIX (SVR3&4) Microport ???
> SCO UNIX & Xenix Santa Cruz Operation 800-726-8649
> UHC UNIX (SVR4) UHC 713-782-2700
>
>
139c152
< the 386 as one of it's target environments, but since it includes
---
> the 386 as one of its target environments, but since it includes
147c160,161
< somewhat limited.
---
> somewhat limited and they (Mt Xinu) see this as a developers
> product, not an end-user product.
250,260c264,267
< Bell Tech (now Intell)
< BT has three serial port solutions: ICC, ACE, and HUB.
< The ICC card looses data at incomming speeds > 19200. It
< locks up about once or twice a week, but is easily restarted
< since BT provides a program that can reset the card without
< rebooting the system. For normal terminal operation the
< card is satisfactory. Price was around $1500 when I bought
< it a couple of years ago.
<
< The ACE card is reported to be "bad beyond belief" with
< hanging problems caused by timing problems on the card.
---
> Bell Tech (now Intel)
> BT had three serial port solutions: ICC, ACE, and HUB.
> Intel is no longer selling these cards (they stopped
> taking orders on 1 Jan 91).
262,265d268
< The HUB is a non-intelligent card that is "rock solid" and
< will provide 6 ports. However, since it is non-intelligent
< it will place a load on the system.
<
328c331,332
< venor.
---
> venor. A second option is to obtain GROFF (which is free and
> available at your local GNU repository).
336,337c340,341
< Eroff $795
< SoftQuad Publishing ???
---
> Eroff $795 (415-964-2200)
> SoftQuad Publishing $995 (800-387-2777)
508c512,518
< up to 4 partitions for use as file systems. This can be bypassed
---
> up to 4 partitions for use as file systems.
>
> For ISC UNIX (version 2.2 and above), the installation software
> will allow you to specify a full range of partitions. SCO UNIX
> has a similar capability in its divvy software.
>
> For those running 386/ix the problem can be bypassed
603c613
< and it's size.
---
> and its size.
652a663,680
> o. Make a lost and found directory and create some empty slots
> (for fsck to use when fixing the file system) for each partition.
> I usually run something like the following:
>
> for i in a b c d
> do
> mkdir /$i/lost+found
> cd /$i/lost+found
> for j in 1 2 3 4 5 6 7 8 9
> do
> for k in 1 2 3 4 5 6 7 8 9
> do
> > $j$k
> done
> done
> rm /$i/lost+found/[1-9][1-9]
> done
>
708c736,741
< Yes, but the slowdown is really impressive. Don't do it.
---
> Yes, but the slowdown is really significant. (for two
> reasons: 1. each 32 bit word access will require two bus
> cycles to obtain since the bus is only 16 bits wide and 2) the
> bus usually only runs at 8MHZ compared to at least 16MHZ for
> the standard memory bus. Don't do it.
>
756a790
>
767,770c801,854
< At least one of the System V R3 releases (namely Microport) included
< a ksh. The base port of System V R4 includes the ksh as one of its
< standard shell, so if you wait a bit, it will be part of the base
< system.
---
> Both Microport and SCO UNIX (starting with 3.2v2) ship a ksh with
> the standard OS. The base port of System V R4 includes the ksh as
> one of its standard shell, so if you wait a bit, it will be part
> of the base system.
>
> 26. What dos-under-unix product will work with ESIX?
>
> ESIX does not include a dos-under-unix product. However, ISC's
> release of VPIX can be installed an run under ESIX.
>
> 27. How do I correctly configure the various STREAMS parameters?
>
> The "STREAMS" subsystem provides a mechanism for inter-process
> communications both within the same system and across various
> networks between different systems. In the standard OS, pieces like
> X-windows, TCP/IP, NFS, FTP all use STREAMS for communication
> purposes. That is why it is important that you correctly configure
> the tunable parameters dealing with STREAMS.
>
> Those parameters include: data blocks, queues, and streams. The
> System administration guide will explain what these parameters are,
> but it doesn't explain how to select good values for these parameters.
>
> To configure these parameters you need to let you system run for
> a while, then run "netstat -m". The output will look similar to
> the following:
>
> alloc inuse total max fail
> streams: 512 75 639 76 0
> queues: 2048 422 3722 428 0
> mblocks: 4440 243 2277566 1158 0
> dblocks: 3552 243 1975582 1032 0
> dblock class:
> 0 ( 4) 512 0 47624 4 0
> 1 ( 16) 1024 34 243812 241 0
> 2 ( 64) 1024 22 1503769 679 0
> 3 ( 128) 512 179 73310 194 0
> 4 ( 256) 256 0 24425 4 0
> 5 ( 512) 128 8 50889 15 0
> 6 (1024) 32 0 30378 12 0
> 7 (2048) 32 0 1373 17 0
> 8 (4096) 32 0 2 1 0
>
> In looking at this output, the key factors are alloc, max, and
> fail. The ideal is to keep the alloc numbers approx 20% higher
> than your max (which will keep fails at zero). Of course, the
> numbers represented under max an fail columns are only since
> the last time you rebooted, so you should keep track of the
> highest values you have seen.
>
> Once you determine the correct values for your system, you can
> use idtune or kconfig to change the parameters (or edit the
> /etc/conf/cf.d/stune file), rebuild the kernel and see how
> things improve.
--
Conor P. Cahill (703)430-9247 Virtual Technologies, Inc.
uunet!virtech!cpcahil 46030 Manekin Plaza, Suite 160
Sterling, VA 22170
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