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Just a few days ago, an accident happened. It was 4 AM and I am moving this blog over to CloudKilat. Already got the MySQL dump transferred, would need to have the whole site rsync-ed to the new server. So I did it. Without me realizing, I misplaced the source and destination ending up the new server’s home directory rsync-ed to the original server. A fundamental mistake. Luckily, as I said above, the MySQL dump is already safe at hand so to rebuild another Wordpress blog would be a matter of configurations. ...

Today was started with a big curiosity towards Urbanesia’s recent performance drop. This week we discovered that although we have completely revamped our codes to hack CI to use MongoDB as its session storage instead of MySQL, we found that Memcache is the bottleneck. When I woke up today, I was devastated to know that it took at minimum 5.7 seconds to load any of our business profiles. So I went hunting for the source of this irritating loading time. The Memcache problem was because our Sofvia server is at its limit, we’ve pushed the CPU utilization to her max and Memcache is simply not getting enough CPU Power. The main cause is putting 2 Memcache instances in Sofvia which in turn made CPU utilizations soar. When Memcache was out of CPU resource, the server was on an endless loop with load averages sky rocketing to > 100. Reference is here. ...