Memory Issues
We’re having some memory issues with the Lighthouse app. I just pushed out a small update, and the application servers didn’t restart properly. I had to bring the site down to check some stuff out for a few minutes. It’s up and running now, but with fewer app servers while I figure out what’s going on.
Update: Got it! We had a quick interruption of service while I reset the config, but things are back to normal now.
I use Bruce’s excellent keyword_search gem to handle the Lighthouse ticket queries. It relies on Dhaka which is a set of tools for generating lexers and parsers. Together, they give me a very nice way of building flexible queries (more on that later!), but I noticed that Dhaka started going on a memory binge in the latest versions. I just removed the regex lexer files (lexer/regex_grammar, lexer/regex_tokenizer, and lexer/regex_parser) and all was good. Whew!
If you want to use the keyword_search gem, go with 1.1.1 for now…
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# Read tyler-durden's tweets for any messages starting with '@project-mayhem' # # $ ruby twitter_bot.rb tyler-durden project-mayhem my-password # # Stores the last modified and highest id in a yaml file in the pwd by the anme of 'twitter_bot.cache' # Should block against dupes and be easy against twitter's servers -
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Discussion
nice quick fix, whew indeed…i dont even have a clue how you figured out what was wrong though.
but thanks for the tips…
At first I thought it was a memory leak, so I broke out the bleak house plugin. I noticed it wasn’t leaking, but going on a memory binge. script/console ate up 200MB+ on my mac.
This is where I got lucky. I tried loading the various gems manually to see where the memory usage jumps. My first try is the dhaka lib, which shot to 45MB just from irb. Yikes.