On Mon, Jan 6, 2020 at 4:22 PM drago01 <drag...@gmail.com> wrote: > What does windows do? Is it the equivalent of the discard mount option or is > it more like fstrim?
Well, as I understand it(*), it's complicated, and there are a lot of various tuning knobs one can use to change behavior. But typically, with volume shadow copy enabled (used for such things as system rollback), which is typically enabled, there is a monthly defrag(**) that will run and do a trim as appropriate. Windows will also do the equivalent of the mount discard option, queuing requests at file deletion for later processing, but the queue is length limited (to limit resource usage and performance impacts), so if the number of requests is too long, new requests are thrown away (apparently with the expectation that the monthly defrag will clean it up). There are also cli commands to perform the activities. (*) This is based on some information from quite some time ago, so it may be somewhat stale. (**) While defrag is often stated as not being needed for SSDs, there are cases where in fact it can make a difference in performance or internal data structure layouts or limitations. _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
