Would this system work correctly with FreeBSD 5.3 ?
scottl at freebsd.org
Sat Jan 22 17:55:14 PST 2005
Sven Willenberger wrote:
> Scott Long wrote:
>> 4GB+ is a problem on 5.3-RELEASE due to DMA issues. Only a small
>> handful of storage drivers will actually work.
> We are looking to implement a postgresql solution using dual opteron/8G
> RAM and LSI battery-backed scsi card (LSI MegaRAID 320-2X - 53C1030
> controller) RAID array. Are there any issues with this type of
> configuration?? Looking at the hardware Release notes I do not see any
> mention of this memory issue or what storage drivers are or are not
The problem is not in the release notes because we didn't discover it
until shortly after the release.
The amr driver in 5.3-RELEASE has particularly bad problems with
4GB+. I've fixed it in both 5-STABLE and 6-CURRENT and it should be
fairly reliable. There is a rare condition that causes problems under
extreme load, but I think I fixed this as a side effect of other changes
in 6-CURRENT. I'm currently testing and validating these changes for
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