Mark Morgan Lloyd a écrit :
BERTRAND Joël wrote:
4/ The last 2.4 kernel that is _usable_ is the 2.4.21 if I remember. All
releases after this kernel are not usable for production workstations
(on sparc32 [that randomly crash with 'watchdog error'] _and_ sparc64
[that randomly freeze without any message]). I haven't found any stable
kernel between 2.4.21 and 2.6.21-rc7. Thanks to Davem to the IOMMU/Sbus
patch.
I suspect that that is critically dependant on the version of the compiler (and
possibly other toolchain elements) used for the kernel. Your earlier comment
about optimisations might be relevant- has something changed in the compiler
defaults or SPARC code generation during Sarge's lifetime?
Maybe compiler version was critical. But since 2.4.21, I have tried all
release between gcc-3.3 and gcc-4.1 without any success (and on several
SS20 SMP with SM71 or RT626). X tough a lot of time to be initialized
and randomly crashed when fb was leo or SX. CG6 was more stable.
If I remember, 2.4 serie run fine until modifications made to support
the new glibc (2.4.22 ?). After this kernel and even I use 2.4.27
shipped by debian, I have seen a lot of random crashes on all my SS20's
running X (freezes, watchdog reset...).
That being said, 2.6 is better than 2.4 on sparc32 UP (on SMP, kernel,
it remains a bug with pipe()).
Regards,
JKB
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