Dell PowerConnect W-AirWave 7.6 User Manual page 240

Field
System Memory Usage
System Disk Utilization
System Disk IOPs
System Disk Throughput
System Disk Outstanding I/O
Requests
System Swap Usage
System CPU Utilization
I/O Throughput by
Worker/by Service
CPU Utilization by
Worker/by Service
System Network Bandwidth
Bandwidth by Protocol
Legacy SNMP Fetcher
Requests
Legacy SNMP Fetcher
Responses
High Performance SNMP
Fetcher Requests
High Performance SNMP
Fetcher Responses
Database Statistics
Top 5 Tables (by row count)
Database Table Scans
228 | Performing Daily Administration in AirWave
Description
6x is a serious issue and will probably result in AirWave becoming unusable. To lower the
load average, try increasing a few polling periods in the Groups > Basic page.
The amount of RAM that is currently used broken down by usage. It is normal for AirWave to
have very little free RAM. Linux automatically allocates all free RAM as cache and buffer. If
the kernel needs additional RAM for process it will dynamically take it from the cache and
buffer.
The amount of data read from the disk and written to the disk.
The number of disk reads and writes per second.
The rate of reading and writing from and to the disk in bytes per second.
The average number of outstanding I/O requests (queue depth). If it's high, it means that I/O
requests (disk reads/writes) aren't being serviced as fast as they're being asked for.
The amount of Swap memory used by AirWave. Swap is used when the there is no more free
physical RAM. A large performance penalty is paid when swap is used. If an AirWave
consistently uses swap, you should consider installing additional RAM.
The percentage of CPU that has been used by the user and the system as well as the amount
that was idle.
Displays reads and writes for workers (AirWave services, database, VisualRF, web server,
RRD tool and AWRRD tool) and for services (AirWave, VisualRF and web server).
Displays reads and writes for workers (AirWave services, database, VisualRF, web server,
RRD tool and AWRRD tool) and for services (AirWave, VisualRF and web server).
All traffic in and out measured in bits per second of your primary network interface (Eth0
being the most common).
Displays the amount of traffic used by Telnet, HTTPS and SNMP used by your primary
network interface (Eth0 being the most common).
The number of SNMP get and walk requests per second performed by the legacy (v1 and v3)
SNMP fetcher.
The number of SNMP OIDs received per second performed by the legacy (v1 and v3) SNMP
fetcher.
The number of SNMP get and walk requests per second performed by the high performance
SNMP (v2c) fetcher.
The number of SNMP OIDs received per second performed by the high performance SNMP
(v2c) fetcher.
The five largest tables in AirWave. Degraded performance has been noticed for in some
cases for tables over 200,000 rows. Decreasing the length of time client data is stored on the
AirWave page is recommended if a user/client table exceeds 250,000 rows.
The number of database table scans performed by the database.
Dell PowerConnect W-AirWave 7.6 | User Guide