Dipankar Sarma writes:
> Looks better atleast. Can you apply the following patch (rs-throttle-rcu)
> on top of rcu-softirq.patch in your tree and see if helps a little bit more ?
> Please make sure to set the kernel paramenters rcupdate.maxbatch to 4
> and rcupdate.plugticks to 0. You can make sure of those parameters
> by looking at dmesg (rcu prints them out during boot). I just merged
> it, but have not tested this patch yet.
OK!
Well not tested yet but I don't think we will get rid overflow totally in my
setup. I've done a little experimental patch so *all* softirq's are run via
ksoftirqd.
total droppped tsquz throttl bh_enbl ksoftird irqexit other
009bee0c 00000000 00004aa7 00000000 00000000 0336a637 00000078 00000000
0054d381 00000000 00004ca0 00000000 00000000 032f8e48 00000000 00000000
I still see dst overflows. But the priority of the ksoftird's can now control
the user apps behavior even during softirq DoS.
softirq_limit-040405.pat
Description: Binary data
Cheers.
--ro
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