transaction_log (instance statistics)

Clicking the transaction_log link will display the statistics that AMPS gathers for the transaction log, if one is configured.

Metric	Description	Type
journals	A list of all journal file names.	snapshot
max_timestamp	The largest timestamp in the transaction log.	snapshot
min_timestamp	The smallest timestamp in the transaction log.	snapshot
write_latency	Statistics covering the latency of writes to the transaction log.	snapshot
write_size	Statistics covering the size of writes to the transaction log.	snapshot

Statistics Database Tables: ITRANSACTION_LOG_DYNAMIC, ITRANSACTION_LOG_STATIC, ITRANSACTION_WRITE_LATENCY_DYNAMIC, ITRANSACTION_LOG_WRITE_LATENCY_STATIC, ITRANSACTION_WRITE_SIZE_DYNAMIC, ITRANSACTION_LOG_WRITE_SIZE_STATIC

Admin Path: /amps/instance/transaction_log/<metric>

Selecting the journals resource will list all journal file names. Selecting a single journal will show the following details:

Metric	Description	Type
file_name	The file name of the selected journal.	fixed
min_timestamp	The smallest timestamp of the journal.	fixed
max_timestamp	The largest timestamp of the journal.	fixed
is_archived	Whether or not the journal is archived.	snapshot
is_compressed	Whether or not the journal is compressed.	snapshot

Admin Path: /amps/instance/transaction_log/journals/<id>/<metric>

The write_latency and write_size metrics contain the following details:

Metric	Description	Type
histogram	An ASCII histogram of the monitored statistic.	snapshot
minimum	The lowest observed sample of the statistic, in microseconds or bytes.	snapshot
maximum	The largest observed sample of the statistic, in microseconds or bytes.	snapshot