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AWS Spot instance prices are going wild: https://twitter.com/jonathannorris/status/1640727214013530114 https://twitter.com/jonathannorris/status/164072721401353

AWS Spot instance prices are going wild: https://twitter.com/jonathannorris/status/1640727214013530114 https://twitter.com/jonathannorris/status/164072721401353011...

londons_explore 4y ago
Interesting that the differential between different regions is remaining the same. You would imagine that if some big user were slurping up all the spot instances worldwide, then it would level out regional pricing differences. Or, if not level it out, change it based on that users sensitivity to bandwidth costs in/out of each region. That makes me think that the spot pricing change is a gradual AWS algorithm change instead - I'm sure they'd be smart enough to apply a pricing change with some smooth function based on date.
- re-thc 4y ago
  The problem is there's been growing demand across the world and/or more people optimizing costs and moving from on-demand -> spot. It's not a single user doing this. There were hardware shortages earlier. I think it's just a case of AWS can't expand fast enough to meet demand for now.
- Matumio 4y ago
  You can shop around a bit for AWS for spot instances. Spot prices in eu-west-3 (Paris) are not that wild yet for the same c5a instances. Somteimes, a region has all its spot instances near the on-demand price. At least they seem to be smoothing out their changes over days. (I think it used to be more wild in the past.)
  - Aeolun 4y ago
    > Somteimes, a region has all its spot instances near the on-demand price. That happens? I’ve pretty consistently had all spot prices at 30-40% of on-demand.
jlogsdon 4y ago
Important to note that AWS doesn’t control spot prices: it’s a market where you bid on what you’re willing to pay. Customers control the cost through their bids. edit; and prices tend to surge at end of quarter, regardless of provider. I’ve seen that for years at AWS and it’s only increased year over year.

AWS Spot instance prices are going wild: https://twitter.com/jonathannorris/status/1640727214013530114 https://twitter.com/jonathannorris/status/164072721401353011...

londons_explore 4y ago

Interesting that the differential between different regions is remaining the same. You would imagine that if some big user were slurping up all the spot instances worldwide, then it would level out regional pricing differences. Or, if not level it out, change it based on that users sensitivity to bandwidth costs in/out of each region. That makes me think that the spot pricing change is a gradual AWS algorithm change instead - I'm sure they'd be smart enough to apply a pricing change with some smooth function based on date.

re-thc 4y ago
The problem is there's been growing demand across the world and/or more people optimizing costs and moving from on-demand -> spot. It's not a single user doing this. There were hardware shortages earlier. I think it's just a case of AWS can't expand fast enough to meet demand for now.
Matumio 4y ago
You can shop around a bit for AWS for spot instances. Spot prices in eu-west-3 (Paris) are not that wild yet for the same c5a instances. Somteimes, a region has all its spot instances near the on-demand price. At least they seem to be smoothing out their changes over days. (I think it used to be more wild in the past.)
- Aeolun 4y ago
  > Somteimes, a region has all its spot instances near the on-demand price. That happens? I’ve pretty consistently had all spot prices at 30-40% of on-demand.

jlogsdon 4y ago

Important to note that AWS doesn’t control spot prices: it’s a market where you bid on what you’re willing to pay. Customers control the cost through their bids. edit; and prices tend to surge at end of quarter, regardless of provider. I’ve seen that for years at AWS and it’s only increased year over year.