Re: [RFC v1 0/2] Per-arch page checksumming and comparison

2017-09-25 Thread Andrea Arcangeli
On Mon, Sep 25, 2017 at 10:46:12AM +0200, Claudio Imbrenda wrote: > Since we now have two different proposals on how to speed up KSM, I > thought I'd share what I had done too, so we can now have three :) > > I have analysed the performance of KSM, and I have found out that both > the checksum and

[RFC v1 0/2] Per-arch page checksumming and comparison

2017-09-25 Thread Claudio Imbrenda
Since we now have two different proposals on how to speed up KSM, I thought I'd share what I had done too, so we can now have three :) I have analysed the performance of KSM, and I have found out that both the checksum and the memcmp take up a significant amount of time. Depending on the content o