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can LS afford 5000 users doing survey?

  • nicegirl
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3 years 5 months ago #98962 by nicegirl
before launch the survey site, we use Siege to test the LS. We cannot pass the 5000 users doing one survey at the same time.
anyone has the same experience?

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3 years 5 months ago #98963 by holch
5000 concurrent users is really a lot. I mean how many respondents will you invite to get 5000 concurrent respondents?

What happens when you reach 5000 users?

It is hard to say if what you are running into is a problem of Limesurvey or of hardware / server setup.

Have a look at the manual! It is a really valuable source for information. Here some helpful links:
Manual (EN) | Question Types | Workarounds

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3 years 5 months ago - 3 years 5 months ago #98978 by DenisChenu
Yep,

And if you have 5 000 user with same Web-Link then you have only one link betwwen your server and survey web site.

You can use Some Content Delivery Network (CDN) (with updating some part in config) for CSS and JS file

But like holch say : 5000 user at same time atonly one website need big server. Not LS only.

We lack some "real caching" , please you can contribute : bugs.limesurvey.org/view.php?id=7988

Denis

Assistance on LimeSurvey forum and LimeSurvey core development are on my free time.
I'm not a LimeSurvey GmbH member, professional service on demand (or search sondages pro).
Last Edit: 3 years 5 months ago by DenisChenu.

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3 years 3 months ago #100269 by Mazi
In general, 5.000 users is not that much. But keep in mind that usually not all users access the survey at the same time. So better send invitation emails step by step and not all in one bun ch to lower such access peaks.

Of course, it also highly depends on your server and the related resources and of course the size of the survey. Running a survey in question by question mode should cause less problems compared to running a huge survey in all in one mode.


Best regards/Beste Grüße,
Dr. Marcel Minke
(Limesurvey Head of Support)
Need Help? We offer professional Limesurvey support
Contact: marcel.minke(at)survey-consulting.com'"

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3 years 3 months ago #100272 by limesun
agree,out company use 3U server for survey, peak user number is around 10k, band width is 100M.despite of the hardware condition, I BELIEVE LS CAN AFFORD 5K USER SAME TIME.

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3 years 2 months ago #101633 by pku9104038

limesun wrote: agree,out company use 3U server for survey, peak user number is around 10k, band width is 100M.despite of the hardware condition, I BELIEVE LS CAN AFFORD 5K USER SAME TIME.


hi,

could you please give me some advise about the deployment for high concurrent issue.

I have test it base on a 4Core Xeon 2.0GHz 4G men server. running nginx as web server and php5-fpm plus mysql.

while i try to test 200 concurrent, the cpu run at 100% and it take average 35 seconds to open a 60 questions survey page.

thanks!

george

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3 years 1 month ago #101938 by quaint
We have an LS instance running on a virtual server allocated 2.4Ghz with 2 gig RAM and a moderate 10gig of hard disc space. Currently running (with no issues) two surveys live to approximately 5,000 respondents (3,000 & 2,000 respectively) plus assorted others.

I must admit, I was moderately worried prior to launch, but I'm really very pleased at the performance.
The following user(s) said Thank You: DenisChenu

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