Slot Management in BigQuery


A slot is a term used in aviation to describe the authorization allowing an aircraft to take-off or land at a specific airport on a particular day during a specified time period. It is distinct from air traffic control clearance, and it is an effective means of managing the congestion that can occur when too many aircraft are permitted to take-off or land at a given airport.

The slot estimator lets you view performance data for jobs that have been processed in the past seven days and models how increasing or reducing slot capacity might impact the number of hours that a job takes to complete. The estimator also displays recommendations that help you decide the right number of slots for your organization.

Overview of the slot estimator

The BigQuery slot estimator is a tool that allows you to estimate the cost and performance tradeoffs of changing your organization’s slot capacity. You can use it with both flat-rate billing and on-demand billing. You can also use it to evaluate the performance impact of moving to reservations.

You can find the slot estimator in the BigQuery dashboard, under the Capacity management section. You can view the utilization chart for an entire organization or for a particular project or reservation. You can also use the slot recommender to create recommendations that help you determine the optimal number of slots for your organization.

Progressive jackpots are a type of bonus in slot machines that offer players a chance to win large sums of money by playing with small bets. The amount that the player wins depends on a combination of factors, such as a random number generator. The odds for a jackpot are typically much lower than other bonus payouts, and the jackpot size can vary significantly.

Often, the winning combination of symbols will come up on a single pay line. If that happens, a symbol will appear in the center of the screen, and if that same symbol appears in the center of the screen a second time, it will trigger a bonus. The machine will also usually display a special animation and music to entice the player to continue playing.

Most slot machines work by using a virtual reel governed by a computer that assigns each of 22 physical “stops” on the wheel a number from 1 to 22. The numbers that the computer assigns to each of the reel stops are then matched with symbols or blanks that register on the pay line.

In traditional slot machines, these values form theoretical number sets from hundreds to tens of thousands. A computer translates these random number sets into their corresponding physical reel stops.

These virtual reels are usually surrounded by a video screen that shows the symbols and blanks in the machine’s payline. The video screen is also used to show the player how much they are winning or losing. The computer uses these numbers to calculate the payback percentage, which is a mathematical formula that tells the player how much they will win or lose based on the outcome of the spin.