On Sun, Jul 10, 2011 at 9:33 AM, Chris Samuel <ch...@csamuel.org> wrote: > On Sun, 3 Jul 2011 05:45:17 AM Calvin Walton wrote: > >> The discard option is not currently automatically enabled; I think >> there may have been some performance issues in certain cases with >> drives that have slow trim implementations. But feel free to give >> it a try. > > This LWN article from 2009 explains why it can be problematic > (especially on SATA drives where TRIM is a non-queued command): > > https://lwn.net/Articles/347511/ > So the current problem with TRIM in ATA (and SATA) is that it introduce delays? As long as it keeps your SSD in a good shape it's still better than not having TRIM at all, right?
Also the only viable option for now is fstrim? What is fstrim does that kernel cannot? I thought the TRIM was included as from kernel 2.6.29, no ? Cheers Leonidas > cheers, > Chris > -- > Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC > > This email may come with a PGP signature as a file. Do not panic. > For more info see: http://en.wikipedia.org/wiki/OpenPGP > -- Caution: breathing may be hazardous to your health. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
