Re: High network usage over network filesystem

[Frantisek Hanzlik <franta@hanzlici.cz>]

Javier Tarifa wrote:
>
>> 1. Are you having problems using dosbox or dosemu? Despite the
>> similarity of
>> the names, they are two different dos emulators.
> Sorry about the confusion dosbox/dosemu, i'm definitely using dosemu.
>> 2. "mounted network partition". Do you mean nfs? Samba? Something else?
> The computer dosemu is running on is a fedora that mounts a remote
> novell netware partition using ncpmount, and I use lredir to make it my f:
>> What if you just type dir at a dosemu prompt?
>>
>> Describe more about your setup, how you're mounting your network
>> partition and
>> what it consists of and how it's structured, and how you're accessing
>> your data
>> files.
> It doesn't matter how I acces my files. After every command I type there
> are several seconds of high network usage before doing anything,
> even running "dir" or running an "unix" command. The only thing that is
> not slowed down is changing directory and changing the device
> This time of doing nothing seems to be proportional to the amount of
> files in the current directory.
> Here's an example:
> test.bat contains this:
>
> call time /t
> call dir > null
> call time /t
> call unix "echo hi"
> call time /t
>
> running it on the root of the network device, on f:, where there are
> only 44 files, gives this:
>
> F:\>test.bat
> F:\>call time /t
> Current time is 6:47:34.97 pm
> F:\>call dir > null
> F:\>call time /t
> Current time is 6:47:35.68 pm
> F:\>call unix "echo hi"
> hi
> F:\>call time /t
> Current time is 6:47:35.84 pm
>
> But then running on the directory where everything needs to be run, with
> 3830 files on the current directory, gives you this:
> F:\somedir>test.bat
> F:\somedir>call time /t
> Current time is 6:51:20.16 pm
> F:\somedir>call dir > null
> F:\somedir>call time /t
> Current time is 6:51:41.20 pm
> F:\somedir>call unix "echo hi"
> hi
> F:\somedir>call time /t
> Current time is 6:51:44.22 pm
>
> On a windows prompt it runs like this:
>
> F:\somedir>test.bat
>
> F:\somedir>call time /t
> 18:53
>
> F:\somedir>call dir 1>null
>
> F:\somedir>call time /t
> 18:53
>
> F:\soemdir>call unix "echo hi"
> "unix" no se reconoce como un comando interno o externo,
> programa o archivo por lotes ejecutable.
>
> F:\somedir>call time /t
> 18:53
>
>
> Any ideas why is this slow? I wouldn't mind if doing a dir or something
> like this lasted a little more than normal, but those 3-4 seconds that
> is "hanged" everytime anything is trying to execute
> makes that, for example, compiling can take hours with dosemu and before
> were a matter of a couple of minutes or so (the compiler is called 2000
> times more or less, but it finishes at the moment)
>
> If I can give any more info, please tell me.
-- 
It look as Novell NW access is slow - and as DOS (in contrast in Unix,
which look for command wo full path only in PATH environ var) first
look for command in current directory, then when there is several thousands
files, this search will take a while.
When You know about command full path, then it may help:

C:\bin\command CMDLINE

However I not know, what it does in case of internal command.com commands
(dir, cd, etc).

Franta Hanzlík
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