Dave,
No, I've been curious since I read an earlier posting here. I've
had a lot more experience with the 3Ware cards, mostly good, and they've been
doing a lot of volume with Rackable/Yahoo which gives
me some more confidence.
The new 3Ware 9550SX cards use a PowerPC for checksumming, so their write
performance is now up to par with the best cards I believe. We find that
you still need to set Linux readahead to at least 8MB (blockdev --setra) to get
maximum read performance on them, is that your experience with the Arecas?
We get about 260MB/s read on 8 drives in RAID5 without the readahead tuning and
about 400MB/s with it.
- Luke
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- Re: [PERFORM] Hardware/OS recommendations for large databa... Luke Lonergan
- Re: [PERFORM] Hardware/OS recommendations for large d... Michael Stone
- Re: [PERFORM] Hardware/OS recommendations for lar... Luke Lonergan
- Re: [PERFORM] Hardware/OS recommendations for large d... Luke Lonergan
- Re: [PERFORM] Hardware/OS recommendations for large d... Luke Lonergan
- Re: [PERFORM] Hardware/OS recommendations for large d... Luke Lonergan
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