On Sun, Feb 17, 2013 at 11:25:37AM +0800, Jaegeuk Hanse wrote: > On 11/23/2012 01:51 PM, Minchan Kim wrote: > >On Wed, Nov 21, 2012 at 02:58:48PM -0800, Luigi Semenzato wrote: > >>Hi, > >> > >>Two questions for zram developers/users. (Please let me know if it is > >>NOT acceptable to use this list for these questions.) > >> > >>1. When I run a synthetic load using zram from kernel 3.4.0, > >>compr_data_size from /sys/block/zram0 seems to decrease even though > >>orig_data_size stays constant (see below). Is this a bug that was > >>fixed in a later release? (The synthetic load is a bunch of processes > >>that allocate memory, fill half of it with data from /dev/urandom, and > >>touch the memory randomly.) I looked at the code and it looks right. > >>:-P > >> > >>2. Is there a way of setting the max amount of RAM that zram is > >>allowed to allocate? Right now I can set the size of the > >>*uncompressed* swap device, but how much memory gets allocated depends > >>on the compression ratio, which could vary. > >There is no method to limit the RAM size but I think we can implement > >it easily. The only thing we need is just a "voice of customer". > >Why do you need it? > > But in current codes, where implement limit to *uncompressed* swap > device? I can't find it in zram_drv.c, could you point out to me? Swap layer would manage it by get_swap_page. - Kind regards, Minchan Kim -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>