Jim Mauro wrote:
All righty...I set c_max to 512MB, c to 512MB, and p to 256MB...
> arc::print -tad
{
...
ffffffffc02e29e8 uint64_t size = 0t299008
ffffffffc02e29f0 uint64_t p = 0t16588228608
ffffffffc02e29f8 uint64_t c = 0t33176457216
ffffffffc02e2a00 uint64_t c_min = 0t1070318720
ffffffffc02e2a08 uint64_t c_max = 0t33176457216
...
}
> ffffffffc02e2a08 /Z 0x20000000
arc+0x48: 0x7b9789000 = 0x20000000
> ffffffffc02e29f8 /Z 0x20000000
arc+0x38: 0x7b9789000 = 0x20000000
> ffffffffc02e29f0 /Z 0x10000000
arc+0x30: 0x3dcbc4800 = 0x10000000
> arc::print -tad
{
...
ffffffffc02e29e8 uint64_t size = 0t299008
ffffffffc02e29f0 uint64_t p = 0t268435456 <------ p
is 256MB
ffffffffc02e29f8 uint64_t c = 0t536870912 <------ c
is 512MB
ffffffffc02e2a00 uint64_t c_min = 0t1070318720
ffffffffc02e2a08 uint64_t c_max = 0t536870912 <------- c_max is
512MB
...
}
After a few runs of the workload ...
> arc::print -d size
size = 0t536788992
>
Ah - looks like we're out of the woods. The ARC remains clamped at 512MB.
Is there a way to set these fields using /etc/system?
Or does this require a new or modified init script to
run and do the above with each boot?
Darren
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