Status of SCHED_ULE?

[Alexander Langer]

> I have not had this experience.  Can you give me details of your machine
> and the kind of load that causes slugishness?  I'll correct it as soon as
> I can identify it.

Using Linux-Firebird with some Java applets shows this effect, i.e.
completelly bogging down X to a unusable state.

Also, it's very easy to archive if you stress some ata-disks.
In particular, if I copy a big (1 GB) file from

ad0: 114473MB <ST3120023A> [232581/16/63] at ata0-master UDMA100
to
ad2: 57259MB <MAXTOR 4K060H3> [116336/16/63] at ata1-master UDMA100

or vice versa, X will completely unresponsive until the the copy is
finnished.

A same kernel with the 4BSD scheduler doesn't show this, so I don't
think it's hardware related.

Alex