Results 1 to 14 of 14
  1. #1

    Memory limit on shared hosting

    Hello.
    I have read topic where memory limit was discussing. I didn't attach importance to that. I want to ask you about your experience with memory limit on shared hosting package.
    Thanks.

  2. #2
    Join Date
    Jun 2006
    Location
    East Coast // NYC
    Posts
    1,693
    Well its more than about memory limit. Most hosts really watch for the CPU usage, because thats the biggest disturbance for other customers.

  3. #3
    Quote Originally Posted by MrRadic
    Well its more than about memory limit. Most hosts really watch for the CPU usage, because thats the biggest disturbance for other customers.
    Yeap I have heard about that. But how do they manage count that?

  4. #4
    Join Date
    Dec 2006
    Posts
    280
    As I have heard there are some programs installed on the server for counting CPU usage.

  5. #5
    What are they? I'm interested how does it work?

  6. #6
    Join Date
    Jun 2006
    Location
    East Coast // NYC
    Posts
    1,693
    Quote Originally Posted by MTempster
    What are they? I'm interested how does it work?
    Well on Windows Server 2003 / Longhorn Server every site runs in its own process, and there is built in functionality to track or even limit sites to how much CPU usage it can use.

  7. #7
    Join Date
    Feb 2006
    Location
    West Lafayette, IN
    Posts
    15
    A lot of hosts simply use the cpu/memory status in WHM (if they are a cpanel host), though there are a number of 'scoreboard' like softwares that can be put in place. The only one I know off the top of my head is a perl module called Apache:coreboard. Most of these target a specific type of memory usage (mysql, http, etc). Shell access an also have memory limitations so running things like fcgi processes can conflict there.

  8. #8
    Join Date
    Dec 2001
    Location
    127.0.0.1
    Posts
    3,637
    Quote Originally Posted by thekiwiproject
    A lot of hosts simply use the cpu/memory status in WHM (if they are a cpanel host), though there are a number of 'scoreboard' like softwares that can be put in place. The only one I know off the top of my head is a perl module called Apache:coreboard. Most of these target a specific type of memory usage (mysql, http, etc). Shell access an also have memory limitations so running things like fcgi processes can conflict there.
    .... and those stats are highly inaccurate.
    Simpli Networks, LLC :: http://www.simplinetworks.com :: Proudly 100% Owned.
    Providing Affordable Managed Cloud/VPS Servers & Server Management Solutions.
    We offer REAL 24x7x365 in-house support - proudly serving our customers since 2005!
    Want to learn more? Give us a call - +1 (844) 4SIMPLI or email sales[@]simplinetworks.com today!

  9. #9
    Join Date
    Feb 2006
    Location
    West Lafayette, IN
    Posts
    15
    .... and those stats are highly inaccurate.
    Painfully so in fact, however this is still a common metric. If you want to know for sure it is always best to ask your host what they use specifically.

  10. #10
    Join Date
    Nov 2004
    Location
    Ethelbert, MB, Canada
    Posts
    65
    Most hosts I know invoke phpSuExec/SuExec which shows the processor and memory utilization of a specific username, and go by that. But, as previously explained, the numbers aren't always correct, and can cause unnecessary head-aches if the host doesn't know _exactly_ what he or she are looking at
    Christian A. Herrnboeck (sales@montecarlohosting.net)
    MonteCarloHosting :: Advanced, Web 2.0, Business Class Hosting Solutions
    Shared, Reseller, Cloud, and Dedicated Solutions
    Backed by the World's Most Advanced Systems

  11. #11
    Join Date
    Jul 2006
    Location
    Detroit, MI
    Posts
    1,955
    Quote Originally Posted by MonteCarloHosting
    Most hosts I know invoke phpSuExec/SuExec which shows the processor and memory utilization of a specific username, and go by that. But, as previously explained, the numbers aren't always correct, and can cause unnecessary head-aches if the host doesn't know _exactly_ what he or she are looking at
    Agreed, however, the numbers are HIGHLY accurate, as they are generated by the Kernel.(proc)

  12. #12
    Join Date
    Jun 2004
    Location
    Tampa Florida
    Posts
    428
    The most accurate system out there is standard unix process accounting. The problem is, it is done on a per user basis, so it generaly doesn't include the apache user time in its totals.

    In general, Most hosts use instantanious data more than they use any actual time based recording. So they will often give the boot to whoever is killing the server at the time that there is a problem, as opposed to watching cpu/mem use over time.
    Rock solid hosting and dedicated servers since 1998!
    StabilityHosting Where stability and uptime are king!

  13. #13
    Join Date
    Nov 2004
    Location
    Ethelbert, MB, Canada
    Posts
    65
    I should have explained myself better, karl. I've seen some hosts go bananas because they monitor top, which shows a PHP process using 68% CPU at the moment. Like vantage says, you need to go over a greater period of time

    Regards,
    Christian
    Christian A. Herrnboeck (sales@montecarlohosting.net)
    MonteCarloHosting :: Advanced, Web 2.0, Business Class Hosting Solutions
    Shared, Reseller, Cloud, and Dedicated Solutions
    Backed by the World's Most Advanced Systems

  14. #14
    Join Date
    Jul 2006
    Location
    Detroit, MI
    Posts
    1,955
    Quote Originally Posted by MonteCarloHosting
    I should have explained myself better, karl. I've seen some hosts go bananas because they monitor top, which shows a PHP process using 68% CPU at the moment. Like vantage says, you need to go over a greater period of time

    Regards,
    Christian
    I agree 100%.

  15. Newsletters

    Subscribe Now & Get The WHT Quick Start Guide!

Related Posts from theWHIR.com

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •