VMware PACKAGE MANAGER 1.1 Bedienungsanleitung PDF herunterladen (Seite 57)

Performance Tuning

To drop queues, use the zenqdelete script:

$ zenqdelete zenoss.queues.zep.rawevents

To get queue names, use rabbitmqctl:

$ rabbitmqctl list_queues -p /zenoss

6.7.1. Message Persistence

You can configure whether messages published to a given exchange:

• Exist only in memory (and are lost if Rabbit fails), or

• Are persisted to disk (and recoverable)

Non-persistent messages are much faster, and do not consume disk space if a queue backs up.

To change default message persistence, edit the value of the following line:

exchange.default.delivery_mode = Value

where possible values are:

• 1 - Do not persist to disk

• 2 - Persist to disk (the default value)

Examples

To prevent unprocessed events from being saved to disk before being processed by zeneventd, uncomment

the line:

# exchange.$RawZenEvents.delivery_mode = 1

To prevent processed events from being saved to disk before being de-duped and persisted by zeneventserver,

uncomment the line:

# exchange.$ZepZenEvents.delivery_mode = 1

To prevent heartbeats from being saved to disk before being handled by zeneventserver, uncomment the line:

# exchange.$Heartbeats.delivery_mode = 1

6.7.2. Message Compression

You can configure whether messages published to a given exchange should be compressed. To change default

message compression, edit the value of the following line:

exchange.default.compression = Value

where possible values are:

• deflate - Use DEFLATE algorithm

• none - Do not compress messages

By default, all messages published to all exchanges are compressed.

6.7.3. Message TTL

You can configure the time-to-live value (TTL) of messages published to a queue, setting them to expire if they

have not been delivered to a client within a given time.

To change default message TTL, edit the following line:

queue.default.x-message-ttl = Value

1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 68 69

Keine Kommentare

VMware PACKAGE MANAGER 1.1 Bedienungsanleitung Seite 57