[ltt-dev] [RFC PATCHv2 4/5] urcu: re-implment urcu-qsbr
pbonzini at redhat.com
Thu Aug 25 02:33:18 EDT 2011
On 08/25/2011 08:03 AM, Lai Jiangshan wrote:
> My synchronize_rcu() is slower. (will be optimized)
> At the sametime, I test Paolo's patch, I don't know why it slowdowns synchronize_rcu()
> in my box.
I think you can try changing the number of busy wait cycles before it
starts using the futex. I was measuring with 10 readers, not 3. It
makes sense to wait more with fewer readers.
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