Issue 328 in openwonderland: Open Wonderland client startup accelerate over internet.

[openwon...@googlecode.com]

Status: New
Owner: ----

New issue 328 by crrami...@gmail.com: Open Wonderland client startup
accelerate over internet.
https://code.google.com/p/openwonderland/issues/detail?id=328

Hello,

The process for the client to check and optionally updates its modules is
the following:

1. Get the module list installed on server.
2. For each module it grabs from server its checksum.
3. For each module it grabs from server its repository URL.
4. Download modules if the checksum is different from local one or the
module doesn't exist locally.

This model is particularly ineffective on Internet due to the LATENCY.
Doesn't matter how much your bandwidth is, the latency is the same. Also if
you connect from Europe to America is even worse.

I am including a patch which dramatically reduces the startup time reducing
the requests to server and consolidate information in fewer ones. Also due
to the info transmitted in each request is bigger the patch enable gzip
compression to take advantage and reduce the download time.

The new process is:

1. Get the module list installed on server, including its checksums and
repository URL compressed using gzip.
2. Download modules if the checksum is different from local one or the
module doesn't exist locally.

Apply the patch in the trunk directory:

~/src/wonderland/trunk> patch -p 0 <checksum-gzip-performance.patch

In my tests the start-up time between I press the Login button until the
window disappear lowered from 23seg to 6s

test it.

Attachments:
checksum-gzip-performance.patch 48.9 KB

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