Articles tagged “performance”

• Pooling and performance: what benchmarks and profiling may reveal When bench­mark­ing Or­seis, I dis­cov­ered that with repet­i­tive queries, its per­for­mance dras­ti­cal­ly de­cline. In some con­di­tions, it was more than ten times slow­er com­pared to the di­rect us­age of ADO.NET. This is to­tal­ly un­ac­cept­able for a li­brary which…
  profiling 5 performance 14 benchmark 1 optimization 3
• Don't use it, it's slow Re­cent­ly, I’ve re­ceived an e-mail like this from a col­league of mine, the e-mail be­ing sent to a few peo­ple in the com­pa­ny: “FYI, we have re­moved SQL com­put­ed columns used when com­put­ing the gauges. The prof­it is im­pres­sive: the prices are now loaded…
  performance 14 profiling 5
• Image formats and why do they matter See also [How does Ya­hoo's Smush.It work and why doesn't every­one use it?][8], from which this ar­ti­cle is in­spired from. One ques­tion any web de­vel­op­er asks him­self soon­er or lat­er is which for­mat is the best for­mat for im­ages. The broad sup­port of…
  performance 14
• Written in stone On most pro­jects, a huge amount of time is spent hy­poth­e­siz­ing about sub­jects which not only don't mat­ter, but of­ten don't have a de­fin­i­tive an­swer. I of­ten see pro­gram­mers ar­gu­ing about which one of two im­ple­men­ta­tions is faster and which one will…
  short 50 rant 34 performance 14
• Did you know that Ruby is faster than C? In the past few days, there was on Pro­gram­mers.SE at least three ques­tions ([ex­am­ple][1]) which can be sum­ma­rized as: “Which pro­gram­ming lan­guage is faster, this one or that one?” This is an­noy­ing. I al­ready as­sert­ed once that it makes no sense to…
  productivity 37 rant 34 performance 14
• Most performance questions are wrong I don't re­mem­ber any ques­tion post­ed on Soft­wa­reEngi­neer­ing.SE re­lat­ed to per­for­mance which would be a good, on-top­ic ques­tion. I re­mem­ber ques­tions which were com­plete­ly wrong or sim­ply unan­swer­able.…
  performance 14 stack-exchange 4 profiling 5
• Streaming input and output in Flask I al­ways found Flask painful to use when it comes to stream­ing bi­na­ry data, such as when I need to send a bi­na­ry file or re­ceive one. The of­fi­cial doc­u­men­ta­tion is very sparse, ex­plain­ing how to re­ceive files sub­mit­ted through a form, how to send a…
  short 50 flask 2 python 5 performance 14
• Measurement: a two-edged sword Too of­ten, the prac­tice of mea­sur­ing things is used in place of ba­sic think­ing, and, log­i­cal­ly, leads to low cus­tomer sat­is­fac­tion and poor prod­uct qual­i­ty. The ma­jor rea­son for that is that in most cas­es, mea­sure­ment is de­hu­man­iz­ing. A cus­tomer,…
  short 50 performance 14 quality 36 rant 34
• Execution plan caching for stored procedures and parametrized queries Read­ing dif­fer­ent ex­pla­na­tions about ex­e­cu­tion plan caching by Mi­crosoft SQL Serv­er, I found very con­fus­ing the dis­cus­sion about the ben­e­fits of us­ing stored pro­ce­dures in­stead of pa­ram­e­trized queries. While [some re­li­able sources][1] men­tion no…
  performance 14
• Users matter more than bytes and CPU cycles There is some­thing com­plete­ly wrong in de­vel­op­ers' na­ture to be ob­sessed with per­for­mance to the detri­ment of every­thing else. It seems even that this com­pul­sive ob­ses­sion is not some­thing we ac­quire with prac­tice, since it af­fects even be­gin­ner…
  interaction-design 10 short 50 rant 34 performance 14 optimization 3
• Make your build agents short living While dis­cussing with a friend of mine what I de­scribed in my pre­vi­ous ar­ti­cle, it ap­peared that my ap­proach to launch­ing tests from a build pipeline is not nec­es­sar­i­ly well known. It seems that I can share some in­sight on that sub­ject. A manda­to­ry…
  performance 14 continuous-deployment 1
• Streaming large uploads to a backend API When it comes to up­load­ing large files to a Flask ap­pli­ca­tion, the sub­ject seems to be well doc­u­ment­ed. Flask (or rather Werkzeug) has lots of fea­tures to stream not only down­loads, but also up­loads them­selves, in or­der to re­ceive huge files with…
  flask 2 werkzeug 1 performance 14 python 5
• What makes performance decrease over time? In an ex­cel­lent blog post, Niki­ta Prokopov shares his thoughts about “our in­dus­try’s lack of care for ef­fi­cien­cy, sim­plic­i­ty, and ex­cel­lence,” ex­plain­ing, among oth­ers, that year af­ter year, hard­ware be­comes more and more pow­er­ful, but ap­pli­ca­tions…
  performance 14 quality 36 profiling 5
• Why is positive premature optimization still wrong? When ju­nior pro­gram­mers do pre­ma­ture op­ti­miza­tion, it is easy to see how it could harm the pro­ject. They guess that a giv­en change would make their code faster, and since they don't mea­sure the ac­tu­al…
  profiling 5 performance 14 optimization 3 productivity 37