For small files hashing is just ok, but with huge ones you can easily find md5sum is CPU bound. Is there any hashing algorithm able to scale out on multiple cores? Any workarounds? Ideas? Anything? :)
— Yeah, just that simple question. It's too easy to consume a lot of RAM in brain-dead mod_XxX (say, mod_php) application, so I'm just wondering what does Apache allow to do as countermeasure.
I'm trying to figure out what the read cache part of the following message refers to:
[sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
Is it "IDE drive's read-lookahead feature (usually ON by default)" as treated by hdparm?
If it's not, how can this be turned off?