Juniper MEDIA FLOW CONTROLLER 2.0.4 - ADMINISTRATOR S GUIDE AND CLI Administrator's Manual page 239

Media Flow Controller Administrator's Guide
Table 19 SNMP Alarms, Possible Causes, and Recommended Actions (Continued)
Event Name
(MIB/ stat Name)
Disk I/O High
(disk-io-high)
Memory Usage High
(memusage-high)
Network Usage High
(netusage-high)
Bandwidth Limit
(total_byte_rate)
Cache Bandwidth
(cache_byte_rate)
Origin Bandwidth
(origin_byte_rate)
Disk Bandwidth
(disk_byte_rate)
Averaged Cache
Bandwidth
(avg_cache_byte_rat
e)
Cause
Disk I/O per second has risen above 5 MB. Indicates
that more content is served from disks.
Memory usage has risen above 90%
Network utilization has risen too high
Cache Resources Traps
Configured bandwidth limit has crossed on this server
Current Cache bandwidth usage is too high
Current Origin bandwidth usage is too high
Current Disk BW Usage is too high
Cache Average bandwidth usage, since the system
uptime, is too high
Configuring and Using Media Flow Controller Logs and Alarms
Action
Check if the amount of hot/popular
content is more than the available RAM
size. If the RAM sizing is inadequate,
consider increase the RAM in the system.
Check if a single process is hogging the
system memory. If so, restart the process.
Check if Media Flow Controller is
constantly fetching content from origin
server. If so, verify the cache-ability
parameters on the origin server (such as
Cache-Control, Expiry, Last Modified
Date).
Check if Media Flow Controller is trying to
upload access logs to an unavailable
server.
Configure traffic redirection thresholds in
the external router/load balancer to
reduce the number of requests redirected
to the Media Flow Controller
Configure traffic redirection thresholds in
the external router/load balancer to
reduce the number of requests redirected
to the Media Flow Controller
Check if disk cache and RAM cache are
properly utilized by monitoring the
dashboard. Media Flow Controller may
be serving lots of long-tail content or the
content cannot be accommodated in the
RAM/disk cache. Check if the available
disk/RAM cache sizing is adequate for
the traffic load.
Check if the amount of hot/popular
content is more than the available RAM
size. If the RAM sizing is inadequate,
consider increase the RAM in the system.
Configure traffic redirection thresholds in
the external router/load balancer to
reduce the number of requests redirected
to the Media Flow Controller.
SNMP Alarms 239