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Log Read/Write

Updated on 2024-04-12 GMT+08:00

This section describes the restrictions on LTS log read/write.

Table 1 Log read/write restrictions

Category

Item

Description

Remarks

A complete LTS

Number of new logs per day

The number of new logs per day in a complete LTS is limited by the number of vCPUs and log scale-out packages for AOM you purchased.

  • Every 100 vCPUs include 50 GB new logs per day.
  • Multiple log scale-out packages

A maximum of 80 TB new logs per day are supported.

For example:

If you purchase 1000 vCPUs and two log scale-out packages with 100 GB per day, restrictions are as follows:

  • New logs per day: 500 GB/day (comes with the 1000 vCPUs) + 100 GB/day x 2 log scale-out packages = 700 GB/day
  • Steady log rate: 700 GB/day x 1024/24 hours/3600 seconds = 8.3 MB/s
  • Peak log rate: 8.3 x 2 = 16.6 MB/s

When the usage exceeds the licensed limit, LTS generates an alarm and may limit the traffic rate. If you need higher specifications, purchase a log scale-out package and upgrade.

Steady log rate

Steady log rate = Number of new logs per day/24 hours/3600 seconds

The maximum steady rate is 1000 MB/s.

Peak log rate

Peak log rate = 2 x steady log rate

The maximum peak rate is 2000 MB/s.

Log writes

The number of writes is less than 1000 or the number of new logs per day/1 TB x 1000 (whichever is larger) in a complete LTS.

The maximum log writes are 10,000 times per second.

N/A

Log query

Up to 10 MB of logs are returned in a single API query in a complete LTS.

N/A

Log reads

Logs can be read up to 600 times per minute in a complete LTS.

N/A

Log group

Number of new logs per day

The total number of new logs in all log groups cannot exceed the limit set in a complete LTS.

N/A

Steady log rate

The total number of new logs in all log groups cannot exceed the limit set in a complete LTS.

N/A

Peak log rate

The total number of new logs in all log groups cannot exceed the limit set in a complete LTS.

N/A

Log reads

Logs are read up to 500 times per minute in a log group.

N/A

N/A

Log writes

The total number of new logs in all log groups cannot exceed the limit set in a complete LTS.

N/A

Log query

Up to 10 MB of logs are returned in a single API query for a log group.

N/A

Log reads

The total number of new logs in all log groups cannot exceed the limit set in a complete LTS.

N/A

Log stream

Number of new logs per day

The total number of new logs in all log streams cannot exceed the limit set in a complete LTS.

N/A

Steady log rate

The total number of new logs in all log streams cannot exceed the limit set in a complete LTS.

N/A

Peak log rate

The total number of new logs in all log streams cannot exceed the limit set in a complete LTS.

N/A

Log writes

The total number of new logs in all log streams cannot exceed the limit set in a complete LTS.

N/A

Log query

Up to 10 MB of logs are returned in a single API query for a log stream.

N/A

Log reads

The total number of new logs in all log streams cannot exceed the limit set in a complete LTS.

N/A

Log time

Logs in a period of 48 hours can be collected. Logs generated 48 hours before or after the current time cannot be collected.

For example:

  • If the current time is 11:00 on January 7, 2022, logs generated before 11:00 on January 5 cannot be collected.
  • If the current time is 11:00 on January 7, 2022, logs generated after 11:00 on January 9 cannot be collected.

N/A

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