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OK, so now we have Linux running on everything...OK, so now we have Linux running on everything...Posted Jun 26, 2005 3:35 UTC (Sun) by tialaramex (subscriber, #21167)In reply to: OK, so now we have Linux running on everything... by JohnBell Parent article: Linux and the Top500
Why so sure? ext2 write performance used to be untouchable because it's completely unsafe. Are you sure XFS manages to beat that on the straight with metadata journalling and other impediments? Or are you depending on XFS disk extents to be a better idea than N-indirect blocks from ext2?
The 2nd Extended Filesystem is also very CPU frugal. At 3.5GB/s the CPU load will be considerable from any filesystem, so choosing a lightweight one may contribute more to improve speed than clever re-ordering algorithms.
The whole thing sounds to me more like a network driver benchmark than anything else, and we've been there before (I think 4-5 years ago, Microsoft specifies 4x 100Mbit cards, wins clear benchmark lead, someone retries with 1x1Gbit card, Linux wins). Obviously to get 3.5Gbyte/s storage you need 4 or more 10Gbit cards, so probably this is a matter of optimisation in a 10Gbit NIC driver or something similar.
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