On 09/22/2014 08:31 AM, Roger Oberholtzer wrote:
The cache seems to be filling up
That is GOOD! The kernel uses memory not used by applications to cache things regarding file system reads/writes. I don't see anything wrong with that. In fact, I personally don't have fast SSDs, but rather bought 20G of memory. The processes are only using ~2-8G, so everything else can be - and in fact - is used as cache. I doubt that for my case an SSD could be faster than RAM. I admit this is an extreme attitude, but it adheres to the very old yet still valid statement: "to make a UNIX system faster, add more RAM". It's not that UNIXoide and thus Linux kernels need more memory, but if it's there, then they'll use it very efficiently. Therefore: simply trust your kernel (unless you have modified the cache settings into an disadvantageous range). Regarding writing to the drop_cache pseudo file: I use it only when I want to measure the performance to simulate a "cold" cache, i.e., when the program and data needed for a process is not yet in memory but has to be read from disk. A subsequent run may be faster in magnitudes, and therefore can't be taken for comparison. Have a nice day, Berny -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org