3 ms·
I'm not sure if it's happening here, but for what it's worth, it's not true that L2 can't be shared. On cores with hyperthreading, it's a shared resource. You
by djcapelis 12y ago
I'm not sure if it's happening here, but for what it's worth, it's not true that L2 can't be shared. On cores with hyperthreading, it's a shared resource.
You can see the impact of this contention on some data generated on an i5-650 here: http://tmp.capelis.dj/2014/l2c.png http://tmp.capelis.dj/2014/l2c.png
- TheLoneWolfling 12y agoHuh. Now that I look at it, you can actually see the effects of it on the graph in the article. Look at scalability at 128k and 256k.
- djcapelis 12y agoYes, also notice how those dips show up more for even numbers of threads than odd numbers of threads. :) That system is hyperthreading.