(4.1) Does TLS impose extra overhead (performance cost) compared to
regular
memory storage? Is it recommended to use in performance-concerned code?
It requires an extra indirection. The app has to:
1. Figure out which thread it's currently running on.
2. Look up the location of the
On Tue, Jan 3, 2012 at 5:02 AM, Yaroslav yaro...@gmail.com wrote:
Interesting observation: removing __thread storage class makes thread data
shared by all threads. Even without any locks concurrent modifications of
the same memory area result in 5-10 fold test time increase. I.e., shared
Yes, by concurrent modifications and shared variable write I mean
concurrent writes. Not reads, of course.
On Tue, Jan 3, 2012 at 5:48 PM, Brandon Black blbl...@gmail.com wrote:
On Tue, Jan 3, 2012 at 5:02 AM, Yaroslav yaro...@gmail.com wrote:
Interesting observation: removing __thread
