My favourite interaction with negative dentries was with PHP's curl library, built with NSS for encryption. NSS would do some kind of filesystem performance che

My favourite interaction with negative dentries was with PHP's curl library, built with NSS for encryption. NSS would do some kind of filesystem performance check, intentionally opening lots of files that didn't exist. At one point, every server in a large autoscaling group was spending 10GB EACH just on the dentry cache. :-) https://twitter.com/jdub/status/875570760361811973 https://twitter.com/jdub/status/875570760361811973