Initramfs too slow and ISR taking too much time !

On my SMP (2 core with 10siblings each) platform i have a PCIe deivce which is a video card which does DMA transfers to the application buffers.
This works fine with suse13.1 installed on a SSD drive.
When i took the whole image and created it as a initramfs and running from it (w/o any hdd) the whole system is very slow and i am seeing PCIe ISRs taking too much time and hecne the driver is failing !
any help on this is much appreciated.
there is a first initramfs iage which is the usual initrd the opensuse installs and i patched it to unpack the second initramfs (full rootfs of 1.8GB) in to RAM (32GB) as tmpfs and exec_init from it.
Last edited by Abhayadev S (2015-05-21 16:28:38)

Abhayadev S,
Although your problem definitely looks very interesting, we can't help with issues with suse linux.
Or are you considering to test archlinux on that machine ?

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