How do I update memory consumption to fix indexer memory errors?

During the indexing phase, many fetching processes are run asynchronously due to the load placed on trying to fetch all of the block content at once. These processes are stored in memory to be fetched at set intervals defined in each asynchronous fetcher.

Indexer.Memory.Monitor checks if the BEAM memory usage exceeds a set limit (defaults to 1 GiB) and if it does, it asks the process with the most memory that is registered as shrinkable to shrink.

Memory usage is checked once per minute. If the soft-limit is reached, the shrinkable work queues will shed half their load. The shed load will be restored from the database, the same as when a restart of the server occurs, so rebuilding the work queue will be slower, but use less memory.

If all queues are at their minimum size, then no more memory can be reclaimed and an error will be logged.

Future Work

As mentioned above, future work is entered into memory to be processed later. These same processes are imported into the database to be checked on a server restart and reentered into memory to be processed.

Updating Memory Consumption

The default Memory limit is 1 GiB and can be edited by setting INDEXER_MEMORY_LIMIT environment variable. See Memory Usage for more info.

Left Bitshift Conversion Table

To perform a left bitshift conversion yourself open the interactive shell.

1. iex

2. import Bitwise

3. 1 <<< 30 //1073741824

INDEXER_MEMORY_LIMIT environment variable value

Left Bitshift

Bytes

GiB

1 or 1gb or 1g regardless of the case of the letters

1 <<< 30

1073741824

1

5 or 5gb or 5g

5 <<< 30

5368709120

5.3

10 or 10gb or 10g

10 <<< 30

10737418240

10.7

15 or 15gb or 15g

15 <<< 30

16106127360

16.1

20 or 20gb or 20g

20 <<< 30

21474836480

21.4

25 or 25gb or 25g

25 <<< 30

26843545600

26.8

30 or 30gb or 30g

30 <<< 30

32212254720

32.2

35 or 35gb or 35g

35 <<< 30

37580963840

37.6

40 or 40gb or 40g

40 <<< 30

42949672960

43

45 or 45gb or 45g

45 <<< 30

48318382080

48.3

50 or 50gb or 50g

50 <<< 30

53687091200

53.7

100mb or 100m regardless of the case of the letters

100 <<< 20

104857600

0.105

500mb or 500m

500 <<< 20

524288000

0.52

1500mb or 1500m

1500 <<< 20

1572864000

1.57

9536mb or 9536m

9536 <<< 20

9999220736

~10

28610mb or 28610m

28610 <<< 20

29999759360

~30

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