Hello Matthew, Le 13/11/2013 15:13, Matthew Patton a écrit : > On Wed, 13 Nov 2013 03:42:54 -0500, Francis Moreau > <francis.moro@xxxxxxxxx> wrote: > >> First I'd like to know if over-provisioning is still needed when >> bcache is used ? > > it's needed for any decent, sustained write load if you don't want > performance to crash thru the floor. But it doesn't sound like this is > your use case. Are you sustaining 5000+ write IOPs? > That's indeed not really required: my system is for a desktop usage. >> - Should I create 2 partitions with one left emtpy and whose size is >> roughly 7% of the device size ? > > Your SSD already has 7% overprovisioning. For best sustained and > consistent write performance you'll want to bump it to 25-30%. Yes you > just need to partition/LVM down to the desired size. Hmm, I don't see what makes you think that my SSD has already 7% overprovisioning ? Actually I don't think it's the case. Thanks for your help. -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
