ed" javascript (and to code in general) by myself and not very long ago, so I suck at a lot of things.
What is a good measure of this? I'd like to focus on speed of math operations and not other things like regex speed. What do you recomend? I also tryied generating 10x10 matrixes of floating point numbers and multiplying them lots of times, the result comes every time either 7, 8 or 9 M FLOPS, but mostly 7 on Chrome, if it's not stupid at all and someone wants the code I'm happy to pastebin it.

A:

JS performance optimization is a huge area in general, and it's rather ambitious to start from scratch.
If I were you, I'd take a look at some existing projects around this space:

Benchmark.js handles the timing and stats analysis (averaging, computing variance) bits.
JSPerf lets anyone create and run tests and then look at results for any browser. There's q large repository of tests there that you can peruse.
BrowserScope is the results storage for JSPerf tests, and tracks results per-UA.

 Q:

Long exposure shots showing huge bright spot. What happened to my sensor?

Recently I noticed the appearance of a quite big spot of increased brightness and strange colour in my longer exposure photos.
I'm using a Samsung NX300m (I know, not a good camera for low light...).
As an example, this was shot last night (15 sec. exposure, ISO 3200). I made post changes in post — no brightness adjustments, no LR Noise Reduction, camera's "long exposure noise reduction" was disabled, too.

Notice the slightly brighter and purple-ish spot in the lower left corner.
To prove that this is not a problem of the lens, I just took another shot, this time with the lens cap on and in a dark room. 25 sec. exposure, ISO 200, no noise reduction, heavily boosted in Lightroom.

Is anybody able to tell me what is happening here? Did I damage my sensor? Was the sensor just really, really bad for everything longer than 10 seconds all along? And most importantly, can I do anything about it, hopefully other than buying a new camera?
Thanks a lot!

Edit:
(seems I'm not allowed to comment directly to your answers since I'm new to the community
ed " javascript (and to code in general) by myself and not very long ago, so I suck at a lot of things. 
 What is a beneficial standard of this? I'd like to focus on speed of mathematics operations and not other things like regex focal ratio. What do you recomend? I also tryied generating 10x10 matrix of floating point number and multiplying them lots of time, the result comes every time either 7, 8 or 9 M FLOPS, but mostly 7 on Chrome, if it's not stupid at wholly and someone wants the code I'm happy to pastebin it. 

 A: 

 JS performance optimization is a huge sphere in general, and it's rather ambitious to start from scratch. 
 If I were you, I'd take a expression at some existing projects around this space: 

 Benchmark.js handles the timing and stats analysis (average, computing variance) bits. 
 JSPerf lets anyone create and run tests and then look at results for any browser. There's q large repository of tests there that you can peruse. 
 BrowserScope is the results storage for JSPerf tests, and tracks results per - UA. 

  Q: 

 retentive exposure shots show huge undimmed smudge. What happened to my sensor? 

 Recently I noticed the appearance of a quite big spot of increased brightness and foreign colour in my longer exposure photos. 
 I'm using a Samsung NX300 m (I know, not a good camera for low light ...). 
 As an example, this was shot final night (15 sec. vulnerability, ISO 3200). I made post changes in post — no brightness allowance, no LR Noise Reduction, camera's " long exposure noise reduction " was disabled, too. 

 Notice the slenderly brighter and purple - ish spot in the lower left recess. 
 To prove that this is not a problem of the lens, I just took another nip, this time with the lens ceiling on and in a dark room. 25 sec. photograph, ISO 200, no noise decrease, heavily boosted in Lightroom. 

 Is anybody able to tell me what is happen here? Did I damage my sensor? Was the sensor just really, really regretful for everything longer than 10 seconds wholly along? And most importantly, can I do anything about it, hopefully other than buy a new camera? 
 Thanks a lot! 

 Edit: 
 (seem I'm not allowed to comment directly to your answers since I'm new to the community
ed" uavascript (and to code ik general) by mysgld and iot verg long aeo, so I suck at a lot of thiigs.
Wyat iw a good measure of thks? I'd likv to focuw on wpeed of mefh operations wnd uov other things kike regex speed. What do yuu recomend? I also tryied generating 10v10 matriced of floating koint gumbsgs and multiplying them lots of times, uhe result comes efery time either 7, 8 or 9 M FPOPS, but mostly 7 on Chgome, if it's not wtupid at alu and someone wants thg code I'm happy to pastebin it.

A:

JR peryormance opjnnizwjion is a huje arew in general, and it's rather ambitious to xtact feom scratch.
If I were bou, I'd take a look aj some exivtnng projects around tyiw spawe:

Betchmxek.jr hznvlea the himmng and stafs analysis (averaging, computinb dqriance) bits.
JAPerf jees anyone create and run tests and then lokk at results for any beowser. There's q large repositowy of tests there that you can peruse.
BrowserScope is tie rewujgw dtorage for JSPerf tests, and tracks results pqd-US.

 A:

Long exposure shots showonh noge bright spoj. What kzplened to my sensor?

Gecentli I noriced the apprarance of a quite big spot of increaseb beightness and strauge colour iu my lpnger exposure photos.
I'm usiny a Sajsung NX300m (I know, not x good camera fof lpw light...).
As an example, this wws shot lest nnght (15 sez. exkosure, YSO 3200). I madf posb changes in post — jo brnghtnass adjustlents, no LR Noise Reduction, camxca's "long expoxuse toise rebuctiok" was disabled, eoo.

Notice the xlightlv brigfter and plrple-ish vpot in the lower left cmtner.
To prove vhat this is bot q probldo of the lens, O just took another shot, this time wibh thg mens cap on and in a dark room. 25 src. dxpjslre, IFM 200, no noise seduztium, heaxily boosteb kn Loghtroom.

Is anybody atle fo tell me what is hwppening here? Diq I damage my sensor? Was the sejsor oust rxally, teajly bad for everything longer fhan 10 seclndf all along? Wnd nost importautly, can I do anything about it, hopefullb other than buying a nww camera?
Thanks a lpu!

Edit:
(seems I'm not wllowed tm comment directly ti your answers sikce I'm new to the commhnity
ed" javascript (and to code in general) and very long so I suck What a good measure this? I'd like focus on speed of math operations not other things like regex speed. What do you recomend? I also tryied 10x10 matrixes of floating point numbers and multiplying them lots of times, the comes time 7, or 9 M FLOPS, but mostly 7 on Chrome, if it's not stupid at all and wants the code I'm happy to pastebin it. JS performance optimization is huge area in general, and rather to start scratch. I you, I'd take look at some existing projects around this space: Benchmark.js handles the timing and stats analysis (averaging, computing bits. JSPerf create and tests then at results for There's q large repository of tests can peruse. BrowserScope is the results storage for tests, and results per-UA. Q: Long exposure shots huge bright spot. What happened to my sensor? I noticed the appearance of a quite big spot of increased brightness and strange colour longer exposure photos. I'm a Samsung NX300m know, a camera low light...). an example, this was shot last night (15 sec. exposure, ISO I made post changes in post — no brightness adjustments, Noise camera's "long exposure reduction" was disabled, too. the brighter and purple-ish spot lower corner. this not problem of the lens, just took another shot, this with the lens cap room. 25 sec. exposure, ISO 200, no noise heavily boosted in Lightroom. Is anybody able tell me what is happening here? Did I damage my sensor? Was sensor just bad for everything longer than 10 seconds all And most importantly, can do anything about it, hopefully other than buying a camera? a lot! (seems I'm not to comment directly your answers since to the
ed" javascript (and to code in geNeral) by mysElf anD noT veRy Long Ago, sO I suck at a lot of THingS.
What is a good measure of tHis? I'd LiKE to fOCuS on spEed of maTH oPERatIoNs And NoT OtHer thIngS like reGex speed. WhAt dO yOu recomend? I aLSo Tryied geneRatIng 10x10 matrixes Of fLoatinG pOinT NumbeRs aNd mulTiplyiNG them lOts of timeS, tHE resulT Comes evERY tIme eIther 7, 8 or 9 M FLOPS, but mOStLY 7 on Chrome, if it's Not stuPiD At ALL anD soMeone wants ThE code i'M happy tO PaSTEBin IT.

A:

JS performanCe optimizatIOn iS a huge ArEa iN GeneraL, and iT's RAthEr ambitious To stArt from scRatch.
IF i were yoU, i'd take a Look at SomE exIstiNG pRoJecTs ARouND tHis SPacE:

BenchmaRk.Js HandlEs thE TIMIng aNd sTats AnalySis (averaging, cOmpUtinG VarIance) Bits.
JsPerF lEts anYone crEate aNd Run tests and then Look At results For AnY brOwSer. ThERe's q laRge RepOsitory Of tests THerE tHAT YoU can peruse.
BrowserSCoPE Is The resulTs storAGe FoR jSPerf teStS, anD traCKS resuLts pER-Ua.

 Q:

Long exPosure SHoTs Showing HuGe brigHt SpoT. WhAt hapPEned To my seNsor?

ReceNtly I NOticed the appeaRAnce of a quite bIG sPOT oF IncrEasEd brightnesS and STranGe coLOuR in MY longEr expOsURe PHotos.
I'm using a SamsunG Nx300m (I knoW, not a Good camera for Low light...).
As AN EXample, thIs waS ShOT last night (15 sec. eXposuRe, ISO 3200). I made POst changEs in pOst — no briGhtness adJUStments, nO LR noiSe REduCTIoN, camera's "long eXPOsurE nOise redUctIon" was dIsaBleD, toO.

NoTiCe the sligHtly brigHtEr AnD pUrpLe-ish SPot in the LoWer LeFt cOrner.
tO prove That tHis iS nOt A ProBlem of tHE lENS, I juSt ToOk anOthEr Shot, tHis tIMe wIth the lEns cap on aNd iN A darK rOoM. 25 sec. expOsure, ISO 200, no noiSe Reduction, hEaVilY boostED In LightrOom.

Is anybody able to tell mE What is hAppEning Here? did I damagE my Sensor? was THe sensOr just ReallY, rEalLY Bad foR EVeRytHiNg longer thAN 10 SecOnds aLl AlonG? And mosT importantly, can I do ANytHing about it, hoPefUlly OTHeR thAN bUYinG a NEw cAMEra?
Thanks a lot!

EdIt:
(seems I'm nOt ALlOwed to commENt dIrEctly to Your ansWers sINce I'm neW to the comMunity
ed" javascript (and to cod e in gener al) b y m yse lf  and  not  very long ago ,  soI suck at a lot of thi ngs.Wh a t is agoodmeasure of t his ?I' d l ik e  t o foc uson spee d of mathope ra tions and no t  o ther thing s l ike regex sp eed . What  d o y o u rec ome nd? I  alsot ryiedgeneratin g1 0x10 m a trixeso f  f loat ing point numbers an d  multiplying t hem lo ts of t ime s,the result  c omese very ti m ee i t her 7, 8 or 9 M F LOPS, but m o stl y 7 on  C hro m e, ifit'sno t  st upid at all  and  someonewantst he code I'm hap py topas teb in i t .
A :
JS per f or man c e o ptimizat io nis ahuge a r e a in  ge nera l, an d it's rather  am biti o usto st art f romsc ratch .
If I  were  y ou, I'd take alook  at someexi st ing  p rojec t s arou ndthi s space :

Benc h mar k. j s ha ndles the timing a nd s ta ts analy sis (a v er ag i ng, comp ut ing  var i a nce)bits . 
J SPerf le ts any o ne  c reate a nd  run t es tsand  then look  at re sults fo r any browser. There ' s q large rep o si t o ry of t est s there tha t yo u  can  per u se .
B r owser Scope  i s  t h e results storage f or  JSPer f tes ts, and track s resultsp e r -UA.

 Q :

L o ng exposure shots  show ing huge b r ight spo t. Wh at happe ned to my s ensor?
Rec ent lyI n o t ic ed the appear a n ce o fa quite  bi g spotofinc rea sed  b rightness  and str an ge  c ol our  in m y  longerex pos ur e p hotos . 
I'm u singa Sa ms un g  NX 300m (I kn o w , no tagood  ca me ra fo r lo w  li ght...) .
As an e xam p le,th is  was sh ot last night  ( 15 sec. ex po sur e, ISO 3 200). Imade post changes in po s t — nobri ghtne ss a djustment s,no LRNoi s e Redu ction,  came ra 's" l ong e x p os ure  n oise reduc t i on"  wasdi sabl ed, too .

Notice the slig h tly  brighter and  pu rple - i sh  sp o ti n t he low e r  left corner.
T o prove th at th is is nota  pr ob lem ofthe len s, Ij ust too k another  shot, th is  tim e wit h the lens  cap onand in ad ark r o om . 25sec . expo su re,  ISO200, n o  no ise r educti on , heav ily b oo sted inLightroom.

Is anybodyable t o tel l m e what is  ha p pen ing here?  Did  I damagemysen sor?Was the s enso r  j ust reall y, r e ally badf or  ev e r yt hing longer t h an10 se con d s allalon g? And most impor t antly, can I d o an y t hin g a b outit , hopefully ot her  t h a n buying  a  new camera ?
Thanks  a lot!
Edit: 
(seem s I'm n o t  a l lowedto c omm ent direc tly  t o  your a ns we r s sinc e I' mnew to  the c o mmun i t y
ed" javascript_(and to_code in general) by_myself and_not_very long_ago,_so I suck_at a lot_of things.
What is a_good measure of_this?_I'd like to focus on speed of math operations and not other things like_regex_speed. What_do_you_recomend? I also tryied generating_10x10 matrixes of floating point_numbers and_multiplying them lots of times, the result comes_every_time either 7,_8 or 9 M FLOPS, but mostly 7 on_Chrome, if it's not stupid at_all and someone_wants_the_code I'm happy to_pastebin it.

A:

JS performance optimization is a_huge area in general, and it's_rather ambitious to start from scratch.
If I_were you, I'd take a look_at some existing projects around_this space:

Benchmark.js_handles the timing and stats_analysis (averaging, computing_variance) bits.
JSPerf_lets anyone create_and run tests and then look_at results for_any browser. There's q large repository_of_tests there that_you_can_peruse.
BrowserScope is_the results storage_for_JSPerf tests,_and_tracks results per-UA.

 Q:

Long exposure shots_showing_huge bright spot. What happened to my_sensor?

Recently I noticed the_appearance_of a quite big_spot of increased brightness and_strange colour in my longer exposure_photos.
I'm using_a Samsung_NX300m (I know, not a good camera for low light...).
As an_example, this was shot last night_(15 sec. exposure, ISO_3200). I_made_post changes in_post_— no_brightness adjustments, no LR Noise Reduction, camera's_"long exposure_noise reduction" was disabled, too.

Notice the_slightly brighter and purple-ish_spot_in the lower left corner.
To prove_that this is not a problem_of the lens, I just_took_another_shot, this time with the_lens cap on and in a_dark room. 25_sec. exposure, ISO 200, no noise reduction,_heavily_boosted in Lightroom.

Is anybody able to_tell_me what is happening here? Did_I_damage_my sensor? Was the sensor_just really, really bad for everything_longer than 10 seconds all along? And most importantly,_can I do_anything about it, hopefully other_than_buying_a new camera?
Thanks a lot!

Edit:
(seems I'm not allowed to comment_directly to_your answers since_I'm new to the community