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Questions tagged [performance]

For questions with regard to the performance (as in time) of the features of the network.

15
votes
0answers
129 views

Review spring cleaning: performance improvements and responsive design

This is just a heads-up that there's a lot of work underway right now on the Review system, mostly in the areas of cleanup and bug-fixing. The review system we have now was originally built over the ...
10
votes
1answer
277 views

User profile page takes 15-20 SECONDS to load on first load in X minutes

When I come to Stack Overflow, I typically do so through a link to my reputation tab so I can see any uncommented downvotes on my posts and try to correct whatever problem/error those votes are ...
2
votes
0answers
51 views

The Stack Exchange Android app is very slow in China

The Stack Exchange sites are not blocked in China. The loading speed of the website is Okay. But the Stack Exchange Android app is very slow, even though connected through VPN. Why is that?
2
votes
0answers
519 views

High CPU and memory usage in Chrome after tab open for a while [closed]

I think this screenshot sums it up: I have a tab open in the background (link to question) since I last restarted my browser about a week ago. I haven't switched to it in that time. Recently I ...
3
votes
0answers
26 views

Resizing user icon on the server side in users page

Today I noticed that a user's page shows a lot of user icons scaled from the very biggest ones. E.g. rene's icon original size is 652'832 bytes, but actually it's scaled from 512 pixels × 512&...
3
votes
0answers
57 views

Stack Exchange Sites Loading Very Slowly

I'm seeing something consistent but odd lately. For the past several weeks, accessing various stack exchange sites from home, sometimes a simple refresh of the page causes very slow load times. While ...
8
votes
1answer
52 views

Performance hit when editing a quesiton

We have a question on Code Review, that when editing causes the browser to become unresponsive. And for me, it causes Firefox to say the script is unresponsive and asks if I wish to kill it: ...
11
votes
0answers
150 views

'all actions' tab of some users' profiles takes forever to load

When attempting to view the 'all actions' tab on some users' profiles, the page takes forever to load. For instance, attempting to load Fred -ii-'s 'all actions' tab takes just about 2 seconds. For ...
11
votes
0answers
61 views

Cache (or otherwise speed up) /admin/users

When I load /admin/users on SO, I generally get a muffin or something while waiting: Those first two XHR requests (to load the all-time users-with-flagged-posts list and the 30 day one, respectively) ...
5
votes
1answer
85 views

Mobile chat: Selecting a message is very CPU-intensive under Firefox for Android, top bar animation likely culprit

On both my Nexus 5X and Nexus 9 running Firefox, selecting a message in the new mobile chat interface is extremely slow, pegging one CPU core for several seconds before the options appear in the top ...
11
votes
0answers
70 views

Extremely long load times for flag history page

Somewhat recently (as in the few days), the flag history summary became extremely slow on Stack Overflow (direct link to mine for devs), and proportionately longer on other sites: On SR, I saw a ...
4
votes
1answer
414 views

Why are Stack Exchange websites, especially Stack Overflow, much too slow?

Stack Exchange websites like Stack Overflow are sometimes very slow. Why is that? I can hardly even enter the website. Does anyone else have this problem too? My "Current" status: and sometimes It'...
2
votes
1answer
88 views

UI freezes randomly in iOS app 1.2.1

I just upgraded to iOS app 1.2.1. While I like the feature enhancements, I find that it is unusable. On a couple of occasions, an action such as upvoting raised a dialog box saying that the network ...
8
votes
1answer
450 views

Why does Stack Exchange use separate databases for each network site?

There are reasonable reasons for why separate sites are appropriate for Stack Exchange according to what it aims to be, and some of them are discussed here : Why is Stack Exchange split into multiple ...
10
votes
0answers
158 views

User flair image issue on hover

When hovering a user's image and their flair shows up (ex: on any review page or on a question where someone other than the OP has most recently edited the question), the flair is requested after the ...
2
votes
0answers
67 views

Is Stack Exchange experimenting with KaTeX? [duplicate]

KaTeX is a new TeX-to-web renderer that is supposed to be faster and more lightweight than MathJax. Normally, I would just dismiss it as an interesting technology that might not be ready for ...
3
votes
0answers
25 views

Review Section is lately very slow [duplicate]

I've notices in the last weeks that the StackOverflow Review Section became very slow. It takes several seconds to load and from time to time it doesn't load at all. Did you notice the same? I don't ...
6
votes
0answers
70 views

Is Stack Exchange having performance/response issues? [closed]

Are there any known performance issues with Stack Exchange (Stack Overflow in particular) right now? I've noticed over the last several weeks at random times of the day, I get slow responses or ...
1
vote
0answers
35 views

Very low performance of SO close review queue when using filtering by tag [duplicate]

I've just altered the tag filter in close review queue on StackOverflow to dojo, because questions tagged dojo and not javascript were normally skipped by my filter. Unfortunatelly, the next question ...
25
votes
0answers
260 views

Loading next item from the close vote queue takes longer and longer

As a regular close vote review tasks handler I'm pretty used to the user experience, including the performance of load times of the next review task. When reviewing close votes I'm always filtered on ...
4
votes
1answer
68 views

Is the close tab in tools timing out?

In the 10k-tools when I visit the close tab I get a 500 response in the network trace and the Close votes category stays empty. Is it timing out (you do notice that selecting 14d, 7d, 2d or today ...
8
votes
0answers
130 views

Has something been recently done to speed up Stack Exchange sites?

In the past month or so, I've noticed that Stack Exchange sites have loaded in a half a heartbeat. I remember times when I had to wait for certain pages to load. Yet lately, everything I do has been ...
1
vote
0answers
69 views

Page download speed of Stack Overflow. What's the tech and trick? [duplicate]

I am baffled by the way Stack Overflow pages are loaded. Even through a mobile connection.(Where download speed is 8kbps & I am not talking about the mobile site. I am taking about using the ...
9
votes
1answer
182 views

Slow user profile page load after having earned several bounties

I am noticing that the list of earned bounties loads noticeably slower when the user has more than 10ish bounties! The same slowness is noticed by activating the earned link on the list of bounties in ...
12
votes
1answer
184 views

Long load times on 10K tools (“flagged posts”)

In the last few days I've noticed that the "Flagged Posts" page has gone from loading instantly to hanging for 10-15 seconds before loading. This is the only page on the SO site on which I am seeing ...
14
votes
0answers
1k views

High CPU usage when StackOverflow is left open for a long time

Several times, I've noticed when I look at my computer in the morning, when it's been left on overnight, Firefox has high CPU usage (25% on this 4-core machine). The first few times, I just restarted ...
17
votes
1answer
157 views

Review page is painfully slow

I have noticed that the review page is slow and takes a huge amount of time to load (if at all). I noticed this at work as well as at home. The rest of the site seems fast, its really just this one ...
1
vote
0answers
71 views

“x questions with new activity” usability

My installation of Firefox seems to be suffering in the bog of "got too many extensions" senility and isn't as responsive as in its younger years... However, this has highlighted a usability issue ...
0
votes
0answers
78 views

Performance feedback?

For about 30min SO pages did not load waiting for pixel.quantserve.com. Is there a way to report such issues more automatically - does not seem to make sense to report it here?
4
votes
0answers
145 views

Something up with Stack Exchange's servers lately?

Sorry, I didn't know where else to post this, but is there something going on with Stack Exchange's servers lately? The Stack Exchange sites have been pretty poor performers for the past couple weeks. ...
3
votes
1answer
254 views

Load factor too high on SE sites

I'm not sure if this is only happening locally (I would think no, but I would also think it'd have been reported by now if not), but I'm having trouble getting to pages on SE sites. I get the Oops ...
65
votes
3answers
19k views

Eeeeek where is my slow performance‽‽‽ [closed]

Over the past couple of days, I have noticed that Stack Overflow is faster than ever. This is severely affecting my thumb twiddling time. When am I supposed to practice my thumb twiddling if I don't ...
10
votes
1answer
108 views

Performance: could the “Responses” tab get a bit of optimization love?

Jeff tweeted this morning about recent performance work, and I dare say lots of bits have been getting faster - but since the recent "envelope change", getting to responses has been really slow. It's ...
0
votes
1answer
61 views

Just me or is SO a bit slower than usual?

Recently it seems like stackoverflow is going a bit slower than usual. I'm getting GET / times of about 800ms. For meta.stackoverflow GET / is only taking about 300ms. Why the difference? Is there ...
4
votes
1answer
126 views

stackoverflow.com slowdown?

As of about 5 minutes ago, stackoverflow.com has slowed down to a near halt.. Meta Stack Overflow, Super User and Server Fault seems okish though. What's up? O_o
0
votes
2answers
66 views

Intermittent performance issue with old questions, markdown and chat

Update Okay, I still get this behavior, but it has something to do with this instance of Chrome vs. another. Which likely implies it has to do with cookies or something. I realized this after starting ...
3
votes
3answers
274 views

Performance Problems with AJAX Requests on SO Sites

This has been bugging me for quite some time, and the problem seems to be getting worse as more SE sites are added. I've watched MetaSO for some time to see if anyone else reports it, and I haven't ...
5
votes
1answer
269 views

ads.stackoverflow.com is slowing down the site

Dont know where to ask or report this but stackoverflow 'hangs' a minute on loading the ads.
8
votes
1answer
184 views

Terrible performance, 20secs waiting for ads to display

Hopefully this is correct place to report this SO is really sluggish tonight, looking into it a little more there have been many times that I was waiting for nearly 20seconds for the ads to display - ...
0
votes
1answer
74 views

Suggestion for Question Tagged “Performance” et al

As with suggestions given when a question is deemed to be subjective and a warning given, should the same not be done with question on performance? I have noticed that with pretty much every single ...
1
vote
2answers
189 views

Anyone notice stackoverflow leaking memory in Chrome?

I noticed that the longer I leave stackoverflow open in a tab (because I'm so addicted) the slower it gets. So, last night I left it running overnight and checked the memory on that tab this morning ...
12
votes
2answers
191 views

Slowdown on SO and meta? [closed]

Is anyone else seeing SO and meta responding very slowly when clicking links, etc? I thought perhaps it was issues with my ISP at home, but I'm seeing the same sort of problems at work. Periodically ...
7
votes
1answer
113 views

Reorder “sidebar” and “pager” divs in the generated html code

Sometimes the http://ads.stackoverflow.com in <div class="everyonelovesstackoverflow"> ... will delay (many seconds) to respond, thus "page numbers" and "footer" wont be rendered. (I use ...
2
votes
0answers
118 views

Sponsored tag icons are not served from sstatic.net [duplicate]

Possible Duplicate: Images in tags doesn’t come from static server As discussed on the SO blog, static content is served from sstatic.net. But I noticed today that the new adobe-sponsored ...
5
votes
2answers
270 views

ads.stackoverflow.com delaying the page rendering

I would like to report a delay on the rendering of SO. It seems the culprit is ads.stackoverflow.com Today ( aug 25 ) I have had some delays. The status bar says. "Waiting for ads.stackoverflow.com"...
3
votes
2answers
85 views

Requests timing out?

I'm just wondering if I am the only one noticing this issue: It seems that when I submit questions, answers, or comments, its VERY common for the page to time out indefinitely (but the question still ...
5
votes
2answers
2k views

Unnecessary trailing whitespace in HTML source for Stack Overflow?

Using Opera I have observed that there is a lot of trailing space in the HTML source for the main page of Stack Overflow, https://stackoverflow.com/. Is there a reason for this? http://www.pil.sdu.dk/...