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ynl: samples: fix recycling rate calculation
Running the page-pool sample on production machines under moderate networking load shows recycling rate higher than 100%: $ page-pool eth0[2] page pools: 14 (zombies: 0) refs: 89088 bytes: 364904448 (refs: 0 bytes: 0) recycling: 100.3% (alloc: 1392:2290247724 recycle: 469289484:1828235386) Note that outstanding refs (89088) == slow alloc * cache size (1392 * 64) which means this machine is recycling page pool pages perfectly, not a single page has been released. The extra 0.3% is because sample ignores allocations from the ptr_ring. Treat those the same as alloc_fast, the ring vs cache alloc is already captured accurately enough by recycling stats. With the fix: $ page-pool eth0[2] page pools: 14 (zombies: 0) refs: 89088 bytes: 364904448 (refs: 0 bytes: 0) recycling: 100.0% (alloc: 1392:2331141604 recycle: 473625579:1857460661) Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -95,6 +95,8 @@ int main(int argc, char **argv)
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if (pp->_present.alloc_fast)
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s->alloc_fast += pp->alloc_fast;
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if (pp->_present.alloc_refill)
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s->alloc_fast += pp->alloc_refill;
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if (pp->_present.alloc_slow)
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s->alloc_slow += pp->alloc_slow;
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if (pp->_present.recycle_ring)
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