Feature request: ability to use libeio with multiple event loops
yarosla at gmail.com
Tue Jan 3 15:26:55 CET 2012
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 <blblack at gmail.com> wrote:
> On Tue, Jan 3, 2012 at 5:02 AM, Yaroslav <yarosla at 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 variable write is about 5-10 times slower than non-shared even
>> without any locks.
> I assume you mean concurrent writes of course. Implicitly shared memory
> between threads should have regular access time when there's no false
> sharing with other threads writing to nearby memory.
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