Built-in resource pools configuration

The maximum memory to use for all resource pools, one of the following:

MAXMEMORYSIZE {
  'integer%'
 | 'integer{K|M|G|T}'
}

• integer%: Percentage of total system RAM, must be ≥ 25%

• integer{K|M|G|T}: Amount of memory in kilobytes, megabytes, gigabytes, or terabytes, must be ≥ 1GB

For example, if your node has 64GB of memory, setting MAXMEMORYSIZE to 50% allocates half of available memory. Thus, the maximum amount of memory available to all resource pools is 32GB.

Default: 95%

The maximum amount of memory allocated by this pool to process any query:

MAXQUERYMEMORYSIZE {
  'integer%'
 | 'integer{K|M|G|T}'
}

• integer%: Percentage of MAXMEMORYSIZE for this pool.

• integer{K|M|G|T}: Amount of memory in kilobytes, megabytes, gigabytes, or terabytes

Prevents runaway queries by setting the maximum time a query in the pool can execute. If a query exceeds this setting, it tries to cascade to a secondary pool:

RUNTIMECAP { 'interval' | NONE }

• interval: An interval of 1 minute or 100 seconds; should not exceed one year.

• NONE (default): No time limit on queries running in this pool.

The number of concurrent queries you expect to run against the resource pool, an integer ≥ 4. If set to AUTO (default), Vertica automatically sets PLANNEDCONCURRENCY at query runtime, choosing the lower of these two values:

• Number of cores

• Memory/2GB

Default: AUTO

Default: Empty

Default: False.

True

FALSE

FALSE.

The maximum size per node the resource pool can grow by borrowing memory from the GENERAL pool:

MAXMEMORYSIZE {
  'integer%'

NONE }

• integer%: Percentage of total memory

• integer{K|M|G|T}: Amount of memory in kilobytes, megabytes, gigabytes, or terabytes

• NONE (default): Unlimited, pool can borrow any amount of available memory from the GENERAL pool.

One of the following:

• Enterprise Mode: 107

• Eon Mode: 110

By default, set as follows:

(numberCores / 2) + 1

Thus, given a system with four cores, MAXCONCURRENCY has a default setting of 3.

True.

3

This parameter must be set ≥ 1.

True.

1G

Empty

False.

5% (of the GENERAL pool's MAXMEMORYSIZE setting) + 2GB

Sets across all nodes the maximum number of concurrent execution slots available to TM pool. In databases created in Vertica releases ≥9.3, the default value is 7. In databases created in earlier versions, the default is 3.This setting specifies the maximum number of merges that can occur simultaneously on multiple threads.

True