Linux ate my RAM

Re:Linux ate my RAM by stephencanon on Monday November 11, 2013 @08:18AM (#6711409)

Memory is still an order of magnitude faster than your “very fast SSD”.

[ Parent | on HN ]

Re:Linux ate my RAM by dingaling on Monday November 11, 2013 @09:11AM (#6711638)

And memory is still an order of magnitude more expensive than SSD, per GB.

I just bought 4 GB of PC-6400 for a laptop at £40. A fast 128GB SSD is £100.

Summary: use RAM judiciously

[ Parent | on HN ]

Re:Linux ate my RAM by stephencanon on Monday November 11, 2013 @09:40AM (#6711780)

All the more reason for your OS to use memory aggressively. Surely you don't want your expensive investment sitting around just doing nothing?

Unused memory is wasted memory.

[ Parent | on HN ]

Re:Linux ate my RAM by sp332 on Monday November 11, 2013 @09:20AM (#6711674)

The prefetched data is managed by the OS. If a program needs the RAM, the prefetched data is immediately discarded. Prefetching never creates RAM pressure.

[ Parent | on HN ]

Re:Linux ate my RAM by voidlogic on Monday November 11, 2013 @10:17AM (#6711978)

This. It blows my mind how many people who write software don't understand how OS caching and virtual memory work. They are great filter interview questions ;)

[ Parent | on HN ]

Re:Linux ate my RAM by alcuadrado on Monday November 11, 2013 @08:35AM (#6711473)

just one?

[ Parent | on HN ]

Re:Linux ate my RAM by stephencanon on Monday November 11, 2013 @08:53AM (#6711543)

At least one. Potentially more. The actual multiple depends strongly on the specific SSD and memory configurations in question, and on the benchmark of interest.

[ Parent | on HN ]