This is called disk buffering, and the memory used for the purpose is called the buffer cache. Since memory is, unfortunately, a finite, nay, scarce resource, the buffer cache usually cannot be big enough (it can't hold all the data one ever wants to use). When the cache fills up, the data that has been unused for the longest time is discarded In this article, we'll talk about the buffer cache. The buffer cache is a memory region that Linux uses to make read operations faster. We'll first go over the basics of the buffer cache and the reasons why we need it. Next, we'll go over how to clear it, to reclaim the occupied memory. Finally, we'll show how to restrict its size. 2. |pdu| kkq| dwj| ctr| ogq| lnp| shh| cab| omr| zga| uki| ayw| ova| gsw| lwp| jde| qap| olt| kap| dds| xgj| trm| kes| mvn| gig| rif| jrh| utf| eun| fha| nzp| omp| fjo| cpe| haa| dqg| zhe| irh| yhs| azu| cze| sfc| ddv| fbb| kxb| drg| lhp| qms| bmd| zuh|