Re: [9fans] 3e mpg123 plays on off on off on off on 4e

[Axel Belinfante <Axel.Belinfante@cs.utwente.nl>]

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Russ suggested:
> > > Try copying the mp3 over to local disk first.

To which I replied:
> Sorry. no local disk (currently).
> it's a diskless cpu/auth server that doubles as terminal,
> boots kernel from flop, takes root from fs.
> (150 Mhz pentium with 64 Mb ram)
> My only other plan 9 machine here is a laptop
> with unsupported audio hardware.
[...]
> I now intend to just install the update, and see what happens

Installing the update did not make a difference.
However, copying the mp3 to the (real fake worm) fs
_does_ make a difference, and solves the problem.
I do use my u9fs '-l user' aname hack:

% srv tcp!unix!9fs
% mount /srv/tcp!unix!9fs /n/unix '-l user'

With the 3e installation it did work fine.
The 'probelmatic' 4e u9fs is of the 2002-04-27 release.

In the hope it sheds some light I ran
	iostats cat a.mp3
with a.mp3 taken from fs and u9fs (attached).
The unix machine was basically idle, and has 100Mb/s
network, the fs only 10 Mb/s.

Any ideas how to improve this?
(If there is a FM I should R, a pointer would be appreciated!)

Axel.

[-- Attachment #2.1: Type: text/plain, Size: 333 bytes --]

The following attachment had content that we can't
prove to be harmless.  To avoid possible automatic
execution, we changed the content headers.
The original header was:

	Content-Type: text/plain ; name="mp3.iostats"; charset=us-ascii
	Content-Description: mp3.iostats
	Content-Disposition: attachment; filename="mp3.iostats"

[-- Attachment #2.2: mp3.iostats.suspect --]
[-- Type: application/octet-stream, Size: 1926 bytes --]

cpu% iostats cat  /n/zamenhof/tmp/a.mp3 > /dev/null

read      4569410 bytes, 380.1597 Kb/sec
write     4558730 bytes, 46373.32 Kb/sec
protocol  9167243 bytes, 730.8666 Kb/sec
rpc       1143 count

Message    Count   Low  High  Time Averg          in      out
version        1     0     0     0     0 ms       19       19 bytes
attach         1     2     2     2     2 ms       25       20 bytes
walk           9     1   197   351    39 ms      261      332 bytes
open           5     0    35    39     7 ms       60      120 bytes
read         562     2   145 11738    20 ms    12926  4575592 bytes
write        557     0     1    96     0 ms  4571541     6127 bytes
clunk          8     0    19    23     2 ms       88       56 bytes

Opens    Reads  (bytes)   Writes  (bytes) File
    1      558  4558730        0        0 /n/zamenhof/tmp/a.mp3
    1        0        0      557  4558730 (stdout)
    1        4    10680        0        0 /bin/cat

cpu%  iostats cat /tmp/a.mp3 > /dev/null

read      4569410 bytes, 760.5784 Kb/sec
write     4558730 bytes, 44968.08 Kb/sec
protocol  9167204 bytes, 1384.312 Kb/sec
rpc       1143 count

Message    Count   Low  High  Time Averg          in      out
version        1     0     0     0     0 ms       19       19 bytes
attach         1     2     2     2     2 ms       25       20 bytes
walk           9     1   436   488    54 ms      248      306 bytes
open           5     0     4     9     1 ms       60      120 bytes
read         562     1    16  5867    10 ms    12926  4575592 bytes
write        557     0     4    99     0 ms  4571541     6127 bytes
clunk          8     0     1     2     0 ms       88       56 bytes

Opens    Reads  (bytes)   Writes  (bytes) File
    1      558  4558730        0        0 /tmp/a.mp3
    1        0        0      557  4558730 (stdout)
    1        4    10680        0        0 /bin/cat
cpu%