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Sample timings and costs using various Heroku CI dyno types

Sample timings (in seconds)

Sample timings using Heroku CI for a small-ish Rails 6 app on various Heroku dyno types:

Dyno Type Run 1 Duration Run 2 Duration Run 3 Duration Average Duration
standard-1x 312 213 303 276
standard-2x 227 121 222 190
performance-m 162 164 175 167
performance-l 100 104 107 104

Pay-by-the-second billing

The cost for each build is based on the dyno type and it's prorated to the second.

For example, a performance-l dyno is billed at $500/month. If a build runs for 100 seconds, it would incur a cost of about 2 cents:

$500/month * 100 seconds / (30 days/month * 24 hours/day * 60 minutes/hour * 60 seconds/minute) = $0.01929

Cost comparison

Using the average build times for each of the dyno types above, we can calculate the corresponding cost per build:

Dyno Type Average Duration Per Build (seconds) Average Cost Per Build (USD)
standard-1x 276 $0.0027
standard-2x 190 $0.0037
performance-m 167 $0.0161
performance-l 104 $0.0200

Specs for Heroku CI dyno types

Dyno Type Memory (GB) Compute CPU Share Dedicated Cost Per Month (USD)
standard-1x 0.5 1x-4x 1x no $25
standard-2x 1.0 4x-8x 2x no $50
performance-m 2.5 11x 100% yes $250
performance-l 14.0 46x 100% yes $500
@Kanithor
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Kanithor commented Jun 3, 2021

do you know what it really means CPU Share 1x and 2x?

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