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Adjusting ulimit -n

March 22, 2010

The first time you run IBM Lotus Domino server on a new Red Hat Enterprise Linux (RHEL) box, you get the following message: WARNING: the maximum number of file handles (ulimit -n) allowed for Domino is 1024. See Release Notes and set the allowable maximum to 20000. This message is less than ideal for a [...]

Filed under: Domino, Linux, System administration | Comments (0)

It’s Time and Energy Wasting Time

March 14, 2010

Once again, it’s time for every clock in America to be messed with. According to the most optimistic estimates from the Department of Energy, this will provide a savings of 0.03% on the country’s annual electricity consumption. According to actual measurements from a study in Australia, it’ll achieve nothing. According to an NBER study of [...]

Filed under: System administration | Comments (0)

8001050F

March 2, 2010

As I’ve written before, date and time calculations are surprisingly difficult. What’s more, even the bits that aren’t difficult often get messed up. Sony have just demonstrated this. Apparently, a firmware bug in the real time clock in some models of PS3 lead the RTC to think that 2010 is a leap year. This confused [...]

Filed under: Business, Programming | Comments (0)