12.10.2012 11:54, Erich Titl пишет: > Hi Yves > > at 12.10.2012 09:22, Yves Blusseau wrote: >> Hi all, >> >> i was reading some articles about zram. >> I have retained that it is recommended to use one zram swap device for >> each CPU core. So what do you think about upgrading our initrd scripts >> to take this into account ? > I don't see any swap device enabled. Do we have swap at all? zram swap is disabled by default, try to set zswap variable into leaf.cfg to 0 (auto size = sum of ramdisk sizes) or fixed size. > >> Also, for low ram embedded system, perhaps it will be prefered to used >> zram disk (formated in ext3/ext4) instead of tmpfs for /tmp and /var/log ? > Does zram have the same functionality as tmpfs? I _believe_ tmpfs has > the capability to grow and shrink depending on it's usage. It may also > be resized at any time. This might not be necessary in our case though, > but I found it useful to grow, for example, the log directory, without > restarting my box. > > Can that be done in zram? > > my 0.02 € > > Erich No, zram is fixed-size block device.
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