From: <rolf@diesing.net> Date: Tue, 19 Feb 2002 03:19:20 +0100 Message-ID: <BCEMLCNMANGFBIDLIOAJEEAMCBAA.rolf@diesing.net> Subject: RE: [suse-sparc] sun-32
Hello Hans,
Thorsten Kukuk says, it (2.4.x) is NOT working for sun4m, only sun4u.
I don't know, why.
Imho it is possible to compile it but it will NOT work correctly.
This is something i realy know!
I found out, a newer Kernel from Kernel.org (2.4.18preX) will work on Sun4m
but NOT so fast like the good old 2.2.20 on SMP-Engines.
This is something i tryed.
The 2.4.x Kernels seem to have trouble with flushing the Caches partialy
in SMP-Mode. ( in my Case one!!! MByte per 2 RT626-CPU's )
In this Way Taskswitching gets very very slow and with high CPU-latency.
(Because they flush the Caches over the Memory-Bus multiple Times per
Seconds)
On SingleCPU-Sparcs without CPU-Cache the 2.4.18 Kernel maybe a good Thing
but
in all other Situations use the stable and well _running_ 2.2.20 Kernel.
This is what i think about.
--- humor on ---
(I try to imagine, what happens on Sparccenter 2000E (20 big CPU's) with
Kernel 2.4.18, i think it will be slower than a Comodore C64 because 19
CPU's
try to flush Cachedata while 1 CPU do a NOP.NOP.NOP to fight against a
BCBPCLE. ("Bugy CPU Branch Prediction Code Loading Error") .... )
--- humor off ---
Rolf
-- [EOF]> -----Original Message----- > From: Witvliet, Hans [mailto:Hans.Witvliet@Alcatel.nl] > Sent: Friday, February 15, 2002 4:38 PM > To: suse-sparc@suse.com > Subject: [suse-sparc] sun-32 > > > Hi all, > > Just a small question: the kernel provided in the 7.3 release > (linux-2.4.9-2.sparc.rpm), > is that compilable for 32-bit machines like a SS20? > > It gets me a undeclared on kbd_rate in the file vt.c > > Probably I forgot something, but I remember there was still an issue of > unmaintained sparc-32 code...... > > Hans. > > -- > To unsubscribe, e-mail: suse-sparc-unsubscribe@suse.com > For additional commands, e-mail: suse-sparc-help@suse.com >
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