Why does the MultiChain Explorer sometimes takes a very long time to load

Question

Nearly 50% of the time, I am able to access the Explorer. Are there alternatives to explorer or is there a way of optimizing it.

Comments

Are you seeing the request logged on the command line when you open it in your browser? Is your chain doing a large transaction volume?

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Are you talking about loading the sqlite database or loading the web pages?

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my chain is not doing a large transaction volume.  I used the command :
nohup python -m Mce.abe --config chain1.conf &

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The database seems to take time loading data to web pages. The set up is on a dedicated server with about 4gb ram, we do not yet have much traffic or transactions. Sometimes it loads fast. So I was wondering how I can optimise the perfomance.

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Are you certain it is not an issue of Internet connectivity?

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yes I am certain that its not internet connectivity because the server is hosted as a dedicated server, wallet.zimquants.com is the domain where i put the files, so the web server is always up but when I click link to explorer installed on the same machine, it takes time.

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Can you profile the code to see where it is spending its time? Based on online documentation, please try running the explorer like this:

python -m Mce.abe -m cProfile --config chain1.conf

Then after a while, quit it, and see what profiling information is output on the command line. You may need to add some other options depending on the version of Python you're using.

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multichain@softcard:~/multichain-explorer$ python -m Mce.abe -m cProfile --config alpha.conf
Error: unknown option `-m'
See `python -m Abe.abe --help' for more information.

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Sorry - my mistake - you can't have two -m options.

The key is to find out where the Python code is spending its time, and for this it should be run under a profiler. The methods are documented here:

https://docs.python.org/2/library/profile.html

Since the explorer uses compiled modules, I think you will need to modify the source code to integrate the profiling into it.