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Primarily to check that we have the WC read/write disparity.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Currently, we look at the throughput for submitting a read batch to a
single engine or any. The kernel optimises for this by allowing multiple
engine to read at the same time, but writes are exclusive to a single
engine. So lets try to measure the impact of inserting the barriers
between writes on different engines.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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If we specify an unobtainable alignment (e.g, 63bits) the kernel will
eviction the object from the GTT and fail to rebind it. We can use this,
to measure how long it takes to move objects around in the GTT by
running execbuf followed by the unbind. For small objects, this will be
dominated by the nop execution time, but for larger objects this will be
ratelimited by how fast we can rewrite the PTE.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Just a set of scripts to integrate these benchmarks with ezbench. They
need to be revised to plugin into latest version of ezbench.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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