On Fri, 16 Mar 2018, Sage Weil wrote:
I think all of this is secondary (and mostly doesn't matter)... the *real* win will be using std::mutex instead of ceph::debugging_mutex. It almost doesn't matter how slow debugging_mutex is. Having fast debug builds is nice, but let's not get distracted from the real prize!
Would need to try it and measure, but I think that we *should* be able to get something that basically has no overhead compared to a raw std::mutex, depending on how the discussion about string copying and lockdep turns out... but I think it can be done, or mighty close...
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