performance

  1. J

    Oracle insert with many bind variables over WAN is very slow

    We have problem with slow insert statement using 40 bind variables as columns values. It runs several seconds when running over WAN link and we were not able to nail down the problem, until we used network analyzer. Every single execution of this prepared query required exchanging over 120...
  2. M

    Ajax with set Interval OR SignalR

    I have a scenario, where i need check if my Database has received new orders (restaurant). Signalr seems to be the best option. But I can wait 2-3 minutes to update with AJAX. Given this long range I can expect, and thinking of a large scale, would not ajax be better?
  3. K

    Calculate the running time in Big-O notation

    1 int sum=0; 2 long start = System.currentTimeMillis(); 3 for (int i = 1; i <= N; i++) { 4 for (int j = 1; j <= N; j++) { 5 sum=sum+1;}} 6 long stop = System.currentTimeMillis(); 7 long elapsed = (long)(stop - start); I am stuck on this question I know lines 1,2,5,6 and 7 are primitive...
  4. P

    Objective difference between register and pointer in AVX instructions

    Scenario: You are writing a complex algorithm using SIMD. A handful of constants and/or infrequently changing values are used. Ultimately, the algorithm ends up using more than 16 ymm, resulting in the use of stack pointers (e.g. opcode contains vaddps ymm0,ymm1,ymmword ptr [...]instead of...
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