Re: [PATCH v4 00/12] mmc: use nonblock mmc requests to minimize latency

2011-06-17 Thread Per Forlin
On 16 June 2011 15:39, S, Venkatraman wrote: > On Thu, May 26, 2011 at 3:27 AM, Per Forlin wrote: >> How significant is the cache maintenance over head? >> It depends, the eMMC are much faster now >> compared to a few years ago and cache maintenance cost more due to >> multiple cache levels and s

Re: [PATCH v4 00/12] mmc: use nonblock mmc requests to minimize latency

2011-06-16 Thread S, Venkatraman
On Thu, May 26, 2011 at 3:27 AM, Per Forlin wrote: > How significant is the cache maintenance over head? > It depends, the eMMC are much faster now > compared to a few years ago and cache maintenance cost more due to > multiple cache levels and speculative cache pre-fetch. In relation the > cost f

[PATCH v4 00/12] mmc: use nonblock mmc requests to minimize latency

2011-05-25 Thread Per Forlin
How significant is the cache maintenance over head? It depends, the eMMC are much faster now compared to a few years ago and cache maintenance cost more due to multiple cache levels and speculative cache pre-fetch. In relation the cost for handling the caches have increased and is now a bottle neck