[9fans] slow video fix

[9fans] slow video fix

[Russ Cox]

if you are suffering from problems with very slow
video, try taking usb and usbuhci out of your kernel
config file.

we think that a mismatch between some usb devices
and our driver is causing the usb cards to eat
all the bus bandwidth, which makes any bus
intensive operation (e.g., video memory writes)
really slow.

removing usb fixes the problem on our test machine.
if it doesn't fix your problems, please let us know
(mail 9trouble@plan9.bell-labs.com).

we'll put out a new boot floppy and release package
with this and the other accrued vga fixes once we
resolve this.

russ

[9fans] /mail/lib/rewrite

[Pat Hacker]

I did not see this in the archives but it may have been mentioned
previously,
/mail/lib/rewrite.direct and rewrite.gateway seem to be missing in 4e.
Could someone post those? Thanks.
Pat

Re: [9fans] slow video fix

[peter huang]

Could we have the serial mouse support back in the new floppy and package
please?

thanks
-peter

"Russ Cox" <rsc@plan9.bell-labs.com> wrote in message
news:9277a63275828f874be57eb858dc01bb@plan9.bell-labs.com...
> if you are suffering from problems with very slow
> video, try taking usb and usbuhci out of your kernel
> config file.
>
> we think that a mismatch between some usb devices
> and our driver is causing the usb cards to eat
> all the bus bandwidth, which makes any bus
> intensive operation (e.g., video memory writes)
> really slow.
>
> removing usb fixes the problem on our test machine.
> if it doesn't fix your problems, please let us know
> (mail 9trouble@plan9.bell-labs.com).
>
> we'll put out a new boot floppy and release package
> with this and the other accrued vga fixes once we
> resolve this.
>
> russ

Re: [9fans] slow video fix

[Don]

> we think that a mismatch between some usb devices
> and our driver is causing the usb cards to eat
> all the bus bandwidth, which makes any bus
> intensive operation (e.g., video memory writes)
> really slow.
>
Yup, recompiling on a usb-less config totally did
the trick. Video is back to normal speed. Congrats
and thanks, everyone! Looking forward to the usb
fix,
Don
http://www.7f.no-ip.info/

Re: [9fans] slow video fix

[Don]

On another note removing USB fixes all my previous
problems as well as one I had last night. Writes
to the main hard drive were timing out. No prob
anymore, though! I don't even need to set dma/rwm
on in the disk ctl anymore. Cool.
Don

initial field report (was Re: [9fans] slow video fix)

[Axel Belinfante]

Don wrote:
> On another note removing USB fixes all my previous
> problems as well as one I had last night. Writes
> to the main hard drive were timing out.

Hmm... Could that also explain the following:
When I installed on my home system(*)
I got three read errors during copydist,
where the plan9.iso was a file on a cd
(I tried to 'burn image' with 'ahead nero 5' (?)
 software on windows, but it mumbled something
 about 'relocating...' followed by 'error, press ok')
I could read the cd without problem while installing
on a toshiba tecra 8000 laptop.
Hmm. both home system and laptop have usb...

Field report:

tecra 8000 laptop installed OK, apart from a known
problem present in 3rd ed. where switching to external
or external+internal monitor does not work. I'll send
details later in a separate message.

(*) 450 Mhz pentium 3, creative dvd player Nvidia 3400 TNT
installed OK, apart from the mentioned read problem,
and I no longer find the ISA modem card - old config lines
seem not to detect it. Wrt the read problem,
I copied the truncated files (/386/bin/^(gs gzip gunzip)
by hand. Simply removing them and re-invoking copydist
didn't work (looking at the dist source I understand why).

Wrt. the fs cpu/auth network, I started following forsyth's
instructions; the fs now runs the 4th ed. kernel,and I can
access it from the standalone 4th ed. laptop and from 3rd ed.
cpu/auth server; I hope to have time to install the 4th ed.
files on the fs and convert the cpu/auth server this afternoon...

So far things went pretty smoothly; thanks/congratulations!!
Axel.

Re: [9fans] /mail/lib/rewrite

[Russ Cox]

Here you are.  Thanks for pointing this out.

# To unbundle, run this file
echo rewrite.direct
sed 's/.//' >rewrite.direct <<'//GO.SYSIN DD rewrite.direct'
-#
-#	sample rewrite file for systems that send and receive mail directly.
-#
-#	by default, the return address points to this system; if you have multiple systems
-#	and don't want them all to be mail recipients, set $site to a generic
-#	name (e.g., plan9) or system name in /rc/bin/termrc and /rc/bin/cpurc
-#	and put an MX DNS record in /lib/ndb to point to that system.
-#
-#	replace YOURDOMAIN.DOM in the following rules with your domain name.
-
-# translate local aliases from /mail/lib/namefiles
-[^!@.]+			translate	"/bin/upas/aliasmail '&'"
-
-# deliver mail without a domain locally
-local!(.*)		>>		/mail/box/\1/mbox
-
-# your local names
-\l!(.*)					alias		\1
-\l\.YOURDOMAIN\.DOM!(.*)		alias		\1
-
-# convert source domain address to a chain a@b@c@d...
-@([^@!,]*):([^!@]*)@([^!]*)		alias	\2@\3@\1
-@([^@!]*),@([^!@,]*):([^!@]*)@([^!]*)	alias	@\1:\3@\4@\2
-
-# convert a chain a@b@c@d... to ...d!c!b!a
-([^@]+)@([^@]+)@(.+)	alias		\2!\1@\3
-([^@]+)@([^@]+)		alias		\2!\1
-
-# queue all mail for delivery
-([^!]*)!(.*) 		| 		"/mail/lib/qmail '\s' 'net!\1'" "'\2'"
//GO.SYSIN DD rewrite.direct
echo rewrite.gateway
sed 's/.//' >rewrite.gateway <<'//GO.SYSIN DD rewrite.gateway'
-#
-#	sample rewrite file for systems that send mail to a mail server or gateway
-#	for delivery.  we assume the mail server handles incoming messages.
-#
-#	by default the return address points to this system; set $site
-#	to the name of the mail server that receives your mail in
-#	/rc/bin/termrc and /rc/bin/cpurc.
-#
-#	replace YOURDOMAIN.DOM with the name of your domain.
-#
-#	in the last rule, $smtp is the name of the mail server.  set it
-#	in the DNS database in /lib/ndb (see ndb(6)).
-
-# translate local aliases from /mail/lib/namefiles
-[^!@.]+			translate	"/bin/upas/aliasmail '&'"
-
-# append the local domain to addresses without a domain
-local!(.*)		alias		\1@YOURDOMAIN.DOM
-
-# convert source domain address to a chain a@b@c@d...
-@([^@!,]*):([^!@]*)@([^!]*)		alias	\2@\3@\1
-@([^@!]*),@([^!@,]*):([^!@]*)@([^!]*)	alias	@\1:\3@\4@\2
-
-# convert a chain a@b@c@d... to ...d!c!b!a
-([^@]+)@([^@]+)@(.+)	alias		\2!\1@\3
-([^@]+)@([^@]+)		alias		\2!\1
-
-# send all mail to the gateway or mail server, $smtp,  for delivery
-([^!]*)!(.*) 		| 		"/mail/lib/qmail '\s' 'net!$smtp'" "'\2@\1'"
//GO.SYSIN DD rewrite.gateway

Re: [9fans] /mail/lib/rewrite

[Russ Cox]

  In /mail/lib/rewrite we will find the line:
  ([^!]*)!(.*) 		| 		"/mail/lib/qmail '\s' 'net!$smtp'" "'\2@\1'"

This line is meant to send _all_ mail to a gateway,
named by the smtp= entry in your /lib/ndb database
for the current machine (or network).  If you're connecting
to an ISP and just want to hand off your mail and let
someone else deal with send retries and the like,
this is the one to use.

  The corresponding line of second edition was:
  ([^!]*)!(.*) 		| 		"/mail/lib/qmail '\s' 'net!\1'" "'\2'"

This line sends to the host directly, no mail gateway.
If you're running a cpu server or your own Plan 9
network, this is more appropriate.  

  However then we have a message in /sys/log/smtp.fail:
	al Jul  4 19:11:09 cs: dns: no translation found(net!$smtp!smtp)

This is almost certainly coming from the first rule,
not the second.

Russ

[9fans] /mail/lib/rewrite

[arisawa]

Hello 9fans,

In /mail/lib/rewrite we will find the line:
([^!]*)!(.*) 		| 		"/mail/lib/qmail '\s' 'net!$smtp'" "'\2@\1'"

The corresponding line of second edition was:
([^!]*)!(.*) 		| 		"/mail/lib/qmail '\s' 'net!\1'" "'\2'"

In man page, we will find examples of usage of /mail/lib/qmail:
         ([^!]*.bell-labs.com)!(.*)  |  "/mail/lib/qmail '\s' 'net!\1'" "'\2'"
and
          /mail/lib/qmail presotto net!plan9.bell-labs.com ken rob

Where and how can we define $smtp ?

It seems that rewrite rule of second edition style works.
However then we have a message in /sys/log/smtp.fail:
	al Jul  4 19:11:09 cs: dns: no translation found(net!$smtp!smtp)

Thanks,

Kenji Arisawa
E-mail: arisawa@aichi-u.ac.jp

[9fans] /mail/lib/rewrite

[presotto]

# convert source domain address to a chain a@b@c@d...
@([^@!,]*):([^!@]*)@([^!]*)		alias	\2@\3@\1
@([^@!]*),@([^!@,]*):([^!@]*)@([^!]*)	alias	@\1:\3@\4@\2

# convert a chain a@b@c@d... to ...d!c!b!a
([^@]+)@([^@]+)@(.+)	alias	\2!\1@\3
([^@]+)@([^@]+)		alias	\2!\1

is in our local /mail/lib/rewrite.  I didn't realize the
distribution had something else.  Thanks for pointing it
out.

[9fans] /mail/lib/rewrite

[arisawa]

Hello 9fans!

I believe the following two lines
@([^@!,]*):([^!@]*)@([^!]*)	alias	\2@\3@\1
@([^@!]*),([^!@,]*):([^!@]*)@([^!]*)	alias	@\1:\3@\4@\2
in /mail/lib/rewrite intend to convert a route address, for example,
@A,@B:alice@C
to another route address
alice@C@B@A


However we can experiment:
term% upas/sendmail '-#' @A,@B:alice@C
invalid address: @A,@B:alice@C
term% upas/sendmail '-#' @A,B:alice@C
/mail/lib/qmail 'arisawa' 'net!A' 'B!C!alice'


I replaced second line to:
@([^!]*),@([^!@,]*):([^!@]*)@([^!]*)	alias	@\1:\3@\4@\2

Then we have:
term% upas/sendmail '-#' @A,@B:alice@C
/mail/lib/qmail 'arisawa' 'net!A' 'B!C!alice'
term% upas/sendmail '-#' @A,B:alice@C
Invalid address: @A,B:alice@C


RFC821 requires the format "@A,@B:alice@C" for route address,
not "@A,B:alice@C".

Bug in /mail/lib/rewrite?

Kenji Arisawa
E-mail: arisawa@aichi-u.ac.jp