On Wed, Aug 15, 2012 at 7:30 PM, C Sights <csights@xxxxxxxxxxx> wrote: > Hi all, > Has anyone tried creating a bcache device in RAM and benchmarking > performance of that versus just allowing that RAM to be used as file system > buffers? I doubt it; bcache is designed to use non-volatile flash memory rather than ram. If the filesystem is readonly, I imagine that using RAM for bcache would lead to worse performance as it would just add overhead. If the filesystem is read-write then it might lead to better performance but would also lead to the file-system being trashed on if unexpected power loss occurs. Under what circumstance would you intend to actually use ram backed bcache? -- John C. McCabe-Dansted -- 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
