Installation and Setup Guide

3 Edit /etc/teradici/pcoip_admin.conf and add the following line:
pcoip.enable_fips_mode = 1
Configuring the PCoIP Client-Side Image Cache
PCoIP client-side image caching stores image content on the client to avoid retransmission. This feature
is enabled by default to reduce bandwidth usage.
The PCoIP image cache captures spatial, as well as temporal, redundancy. For example, when you scroll
down through a PDF document, new content appears from the bottom of the window and the oldest
content disappears from the top of the window. All the other content remains constant and moves upward.
The PCoIP image cache is capable of detecting this spatial and temporal redundancy.
Because during scrolling, the display information sent to the client device is primarily a sequence of cache
indices, using the image cache saves a significant amount of bandwidth. This efficient scrolling has
benefits both on the LAN and over the WAN.
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On the LAN, where bandwidth is relatively unconstrained, using client-side image caching delivers
significant bandwidth savings.
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Over the WAN, to stay within the available bandwidth constraints, scrolling performance is often
degraded unless client-side caching is used. In this situation, client-side caching can save bandwidth
and ensure a smooth, highly responsive scrolling experience.
By default this feature is enabled, so that the client stores portions of the display that were previously
transmitted. The default cache size is 250MB. A larger cache size reduces bandwidth usage but requires
more memory on the client. A smaller cache size requires more bandwidth usage. For example, a thin
client with little memory requires a smaller cache size.
Setting the Configuration Property
To configure the cache size, you can set the pcoip.image_cache_size_mb property. For example, the
following setting configures the cache size to be 50MB:
pcoip.image_cache_size_mb = 50
Use a space before and after the equals (=) sign.
If you specify a value that is less than the amount of available memory divided by 2, the value is rounded
to the nearest multiple of 10. The minimum value is 50. Any value that is less than 50 is ignored.
If you specify a value that is larger than the available memory divided by 2, the value is set to the amount
of available memory divided by 2 and rounded to the nearest multiple of 10.
You can set this property in any of several files. When Horizon Client starts up, the setting is processed
from various locations in the following order:
1
/etc/teradici/pcoip_admin_defaults.conf
2
~/.pcoip.rc
VMware Horizon Client for Linux Installation and Setup Guide
VMware, Inc. 55