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Oracle® ZFS Storage Appliance Analytics Guide, Release OS8.7.0

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Updated: March 2017

Protocol: FTP Bytes

This statistic shows FTP bytes/sec requested by clients to the appliance. Various useful breakdowns are available: to show the client, user and filename of the FTP requests.



When to Check FTP Bytes

FTP bytes/sec can be used as an indication of FTP load, and can be viewed on the dashboard.

The best way to improve performance is to eliminate unnecessary work, which may be identified through the client, user and filename breakdowns, and the filename hierarchy view. It may be best to enable these breakdowns for short periods only: the by-filename breakdown can be one of the most expensive in terms of storage and execution overhead, and may not be suitable to leave enabled permanently on appliances with high rates of FTP activity.

FTP Bytes Breakdowns

Table 39  Breakdowns of FTP Bytes
type of operation
FTP operation type (get/put/...)
Username of the client
Filename for the FTP operation, if known and cached by the appliance. If the filename is not known it is reported as "<unknown>".
The share for this FTP request.
The project for this FTP request.
Remote hostname or IP address of the FTP client.

These breakdowns can be combined to produce powerful statistics. For example:

  • "Protocol: FTP bytes per second for client 'phobos.sf.fishpong.com' broken down by filename" (to view which files a particular client is accessing)

Further Analysis

See Cache: ARC Accesses to learn how well an FTP read workload is returning from cache; and Disk: I/O Operations for the back-end disk I/O caused.