With one of the fastest NVMe SSD's on the market I'm not even sure ureadahead has been beneficial to me. After reading these messages though I'm wondering if it is detrimental:
Oct 16 16:48:57 alien ureadahead[313]: ureadahead:/home/rick/.local/share/Trash/info/eyesome-cfg.bak.trashinfo: No such file or directory
Oct 16 16:48:57 alien ureadahead[313]: ureadahead:/home/rick/.local/share/Trash/info/eyesome-cfg.sh.trashinfo: No such file or directory
Oct 16 16:48:57 alien ureadahead[313]: ureadahead:/home/rick/.local/share/Trash/info/monitor-eyesome.sh.trashinfo: No such file or directory
Yesterday before installing Android Studio I wanted to trim down on storage space so I emptied the trash. Upon rebooting just now ureadahead is complaining it can't find files in the trash anymore.
I can see the value of ureadahead caching often used programs into RAM by why would it be caching the trash can into RAM? Especially if trash is write many times and then read & delete once in blue moon.
Perhaps someone familiar with ureadahead can explain the rationale?
tmpfsor something). I don't think it caches files in the trash can that haven't been used recently. As far as benefit, the files have to be read into RAM when a program reads them, even for SSDs, so this will save that effort if the file is already in RAM. While SSDs might have decent throughput, they are still much slower than RAM in terms of latency.ureadaheadmay be deciding "hey let's use all this juicy real estate". I'd rather the surplus was used by Kernel for caches and buffers though. Unlessureadaheadis within that pool? I agree RAM is faster than Gen 3.0 x 4 PCIe NVM.e SSD (Samsung Pro 960) but I hope it's not being wasted when it can be put to better use.