Re:First Rule of Google Fuchsia OS Is to Not to Talk About It
by Kenji on Friday May 19, 2017 @05:20PM
(#14379439)
>Their tlb shootdown is not only synchronous, but it only shoots one page at a time, synchronously.
QNX6.6 introduced this too (as a fix for a race condition that existed in QNX6.5 and lower) and it was a huge pain to get actual realtime inbetween the TLB flush storms. Like, this is a make-or-break issue right there. TLB flushes can easily eat 10% of all CPU cores if you start and end a process every second.
QNX6.6 introduced this too (as a fix for a race condition that existed in QNX6.5 and lower) and it was a huge pain to get actual realtime inbetween the TLB flush storms. Like, this is a make-or-break issue right there. TLB flushes can easily eat 10% of all CPU cores if you start and end a process every second.