Hi... Let's see if I can help ... On Mon, Nov 1, 2010 at 19:48, loody <miloody@xxxxxxxxx> wrote: > I am debugging a user mode program which is used to play multimedia. > The size of cache memory is growing so high while playing files and > that makes my kernel become slow cache grows at that situation is acceptable....but "slow"? what was slow? choppy sound playback? >so I want to know > 1. is there any function call that will increase cache usage I need to > pay attention. every functions that read files from block device will do....unless you do direct I/O or XIP (eXecute In Place) > 2. is there any function which help me to clean the caches check the handler(s) of /proc/sys/vm/drop_caches...that would be the hint... > 3. can I limit the size of cache or memory when some process, or pid, > try to allocatte? cache? uhm... AFAIK there isn't such tunable...or maybe you can take a look on cgroups...who knows it is doable via cgroups. but regarding the size of memory allocated for a program or programs launched by a user, you can check ulimit and/or cgroups. -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
