Robin Harris
for Storage Bits
| August 27, 2021 — 11:08 GMT (12:08 BST)
| Topic: Storage
By Olga Millan
As noted last month the two main components of storage performance are latency and bandwidth. Low latency allow CPUs to juggle fewer outstanding I/Os, while high bandwidth moves the data faster. In the real world, latency is the more important number because most I/Os are16Kb or less, so transport time is negligible.
But most people find it easy to think about bandwidth – more better! – while latency is more abstract (900µs vs 650µs – huh?). Also, bandwidth is easier to measure. How much easier I found out while trying to answer the “which is better?” question.
Comments welcome. By the way, Intel has always had 80Gb/sec Thunderbolt on their roadmap. I expect it within two years.
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Robin Harris
for Storage Bits
| August 27, 2021 — 11:08 GMT (12:08 BST)
| Topic: Storage