Hello all,<div><br></div><div>     I am experimenting with Boost interprocess containers and like the ease of using them. I want to use these in place of the &quot;linux shared memory+shared memory allocator + std containers&quot;. However, I am seeing some performance hit when using boost. I measured the times for vector access from shared memory. I define access as indexing into the vector (v[i]) (all times in milli seconds):</div>
<div><br></div><div>    Num elements   Local heap | Boost ipc | Shmat()</div><div>       100,000            0.23           0.39             0.27</div><div>    1,000,000             2.3            3.85             2.7</div>
<div><br></div><div><br></div><div>I repeated these for different number of elements and the results scaled as above. I used callgrid+kcachegrind to profile boost and shmat() access, and I see there is a significant amount of time spent in boost offset pointer calculation and mcount ( I don&#39;t know what that is). </div>
<div><br></div><div>Is there something I am missing or is this an expected performance hit, for using boost with all off the additional functionality, compared to linux shared memory?</div><div><br></div><div>Thank you,</div>
<div>Naveen</div>