Yes, there have been bugs with heavy I/O and ZFS running the system
out of memory. However, there was a contention in the thread
about it possibly being due to marvell88sx driver bugs (most likely not).
Further, my mention of 32-bit Solaris being unsafe at any speed is still
true. Without analysis of a specific hang it is very hard to say what caused
it.
It could be driver, memory exhaustion, file system error, VM error, broken
hardware, or any number of other things. My points were
1) The marvell88sx driver should be pretty solid at this point in time (yes,
earlier
releases had problems, most of which were related to bad block handling),
and
2) There are systemic issues in Solaris on 32-bit architectures (of which only
x86 is supported).
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