VMware CLOUD DIRECTOR 1.0 Manuel d'utilisateur télécharger pdf (Page 29)

PERFORMANCE STUDY /29

VMware vCloud Director 1.0 Performance and Best Practices

Table 5. Cache Limits in vCloud Director 1.0

CACHE DEFAULT

SIZE (FOR

EACH CELL)

USAGE/INFORMATION HOW TO ADJUST

VM Thumbnail

Cache

1000 Maximum number of VM thumbnails

that can be cached per cell.

Each cached item has a time to live

(TTL) of 180 seconds.

cache.thumbnail.maxElementsInMemory = N

cache.thumbnail.timeToLiveSeconds = T

cache.thumbnail.timeToIdleSeconds = X

Security

Context Cache

500 Holds information about the security

context of logged in users.

Each item has a TTL of 3600 seconds

and idle time of 900 seconds.

cache.securitycontext.maxElementsInMemory =

cache.securitycontext.timeToLiveSeconds = T

cache.securitycontext.timeToIdleSeconds = X

User Session

Cache

500 Holds information about the user

sessions for logged-in users.

Each item has a TTL of 3600 seconds

and idle time of 900 seconds.

cache.usersessions.maxElementsInMemory = N

cache.usersessions.timeToLiveSeconds = T

cache.usersessions.timeToIdleSeconds = X

Inventory

Cache

5000 Holds information about vCenter

Server entities managed by vCloud

Director.

Each item has a LRU (least recently

used) policy of 120 seconds.

inventory.cache.maxElementsInMemory = N

In order to adjust any of these configured values, perform the following steps:

Stop the cell. This releases the lock that the cell has on the file you will edit.

Edit the

global.properties

file, which is usually found in

<vcloud director install

directory>/etc/

Add the desired configuration lines. For example,

org.quartz.threadPool.threadCount = 256

Save the file.

Start the cell.

vCenter Server configuration limits are very important because vCloud Director utilizes vCenter Server for many

operations. For vCenter Server 4.0 configuration limits, refer to

VMware vCenter Server 4.0 Configuration Limits

[4]. For vCenter Server 4.1 configuration limits, refer to

VMware vCenter Server 4.1 Configuration Limits

[5].

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VMware CLOUD DIRECTOR 1.0 Manuel d'utilisateur Page 29

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