Hi Nitin, On Mon, Aug 9, 2010 at 8:26 PM, Nitin Gupta <ngupta@xxxxxxxxxx> wrote: > Compression takes much more time than decompression. So, its quite > wasteful in terms of both CPU cycles and memory usage to have a very > low compressed page size threshold and thereby storing such not-so-well > compressible pages as-is (uncompressed). So, increasing it from > PAGE_SIZE/2 to PAGE_SIZE/8*7. A low threshold was useful when we had > "backing swap" support where we could forward such pages to the backing > device (applicable only when zram was used as swap disk). > > It is not yet configurable through sysfs but may be exported in future, > along with threshold for average compression ratio. > > Signed-off-by: Nitin Gupta <ngupta@xxxxxxxxxx> The description makes sense but lacks any real data. What kind of workloads did you test this with? Where does it help most? How much? Pekka _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel