On Thu, 2009-04-09 at 16:21 +0800, Herbert Xu wrote: > On Thu, Apr 09, 2009 at 03:50:21PM +0800, Huang Ying wrote: > > Hi, Herbert, > > > > I am working on GCM acceleration with Intel new PCLMULQDQ instructions > > now. Can you tell me how to do GCM benchmark? > > We need to add the infrastructure for testing AEAD speed. It can > be modelled after the cipher/hash speed testing code. One issue here is that blkcipher testing infrastructure uses local_bh_disable()/local_irq_disable() to get more accurate result. But AEAD uses asynchronous interface, something like wait_for_completion_interruptable() will be used in test path. How to get more accurate result for testing asynchronous interface? Maybe it can be: test many times, select the one with best performance. What's your opinion? > > BTW: Similar with AES-NI support, I use cryptd to defer requests in soft > > IRQ context. Now, cryptd uses crypto_hash instead of crypto_shash as > > child. I think we should change that. If you have not done that, I will > > do that. > > We need to complete the conversion of all hash algorithms to shash > first. Yes. Best Regards, Huang Ying
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