Dear All Thanks for your help. I could activate zram0, after doing the mkswap on the device.
These all steps i followed, echo 50M > /sys/block/zram0/disksize mkswap /dev/block/zram0 swapon -p 100 /dev/block/zram0 after that, i saw my swap partition is being used. From the stats i saw 44MB RAM data is compressed into 14MB. But i have a doubt, When i reserve 50M RAM for swap partition, is it like a carve out memory? i mean Kernel cant use this anymore? On Sat, May 24, 2014 at 12:31 PM, Chen, Yiqun <[email protected]>wrote: > Um, well that sounds pretty weird. > Have you checked that you've loaded that module? If so, I guess there's > something wrong with modprobe stuff that it didn't mknod for zram, so > try mknod for zram manually. > Check your /dev/block/ directory for the device numbers. On my box it > was 254:0 254:1 which were mapped to my zram0 and zram1 respectively. > Then: > mknod /dev/zram0 b 254 0 > It should create a suitable /dev/zram* for you. Then try mkswap-swapon > procedure as others suggest. Please notice that -p argument for swapon is > somehow > necessary since on my gentoo box the priority of swap devices is set minus > by default. So your system may not use the zram swap at all even if > you've successfully create the zram device for it. > Please let my know if it still doesn't work :-) > On Fri, May 23, 2014 at 02:51:39PM +0530, sandeep kumar wrote: > > >>In my system /dev/zram0 is not present but sys/block/zram0 is present. > > thats why i m having this doubt > > just now i found that we have zram0 in /dev/block/zram0 > > i tried the command you told, > > > > *root@kleoslte:/ # swapon -p 100 /dev/block/zram0* > > *swapon -p 100 /dev/block/zram0* > > *swapon failed for /dev/block/zram0* > > > > is there anything else that i can try? > > > > > > > > On Fri, May 23, 2014 at 2:18 PM, sandeep kumar < > [email protected]>wrote: > > > > > Dear Anders > > > > > > >Yes, zram is activated, otherwise you wouldn't have had zram0 created. > > > > > > >Though you might not be using it... > > > >If you want to use it for swap, you'll have to run `swapon -p 100 > > > /dev/zram0`. > > > >Well, '-p 100' isn't necessary, it's just to set the swap priority. > > > > > > In my system /dev/zram0 is not present but sys/block/zram0 is present. > > > thats why i m having this doubt > > > > > > thanks > > > sandeep > > > > > > > > > On Thu, May 22, 2014 at 4:56 PM, Anders Darander < > > > [email protected]> wrote: > > > > > >> On 22 May 2014 12:58, sandeep kumar <[email protected]> > wrote: > > >> > Dear All, > > >> > > > >> > we are trying to make use of zramfs. In our android based board, > > >> > we are seeing this output, > > >> > > > >> > root@sandeep:/sys/block/zram0 # ls > > >> > > >> > > > >> > Does this mean zram is activated ? > > >> > > >> Yes, zram is activated, otherwise you wouldn't have had zram0 created. > > >> > > >> Though you might not be using it... > > >> If you want to use it for swap, you'll have to run `swapon -p 100 > > >> /dev/zram0`. > > >> Well, '-p 100' isn't necessary, it's just to set the swap priority. > > >> > > >> > we are trying to do the operation to set disk size, > > >> > echo $((50*1024*1024)) > /sys/block/zram0/disksize > > >> > > >> This should have set the size of zram0. > > >> > > >> Cheers, > > >> Anders > > >> > > >> -- > > >> Anders Darander > > >> EPO guidelines 1978: "If the contribution to the known art resides > > >> solely in a computer program then the subject matter is not > > >> patentable in whatever manner it may be presented in the claims." > > >> > > > > > > > > > > > > -- > > > With regards, > > > Sandeep Kumar Anantapalli, > > > > > > > > > > > -- > > With regards, > > Sandeep Kumar Anantapalli, > > > _______________________________________________ > > Kernelnewbies mailing list > > [email protected] > > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > > -- > Best regards > Chen, Yiqun > -- With regards, Sandeep Kumar Anantapalli,
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