we have been using FR for years. The primary issue we have on shared servers is hung database queries, which causes all coldfusion requests to be used up until there are none left, and cf will then stop serving up pages to any new requests. There are so many things that can cause this, especially on a shared server, but the problem is that a query is a native java call, so cannot be killed even by FusionReactor, so it will just hang around forever until CF is restarted, Diagnosing and performance tuning takes time and costs money, and on a shared server, no-one is going to pay for that, so it would be an endless and cost prohibitive task. These specific types of issues on affect coldfusion due to the fact it runs as a service, PHP and the likes do not suffer from such issues.
You should have a real of the following article I wrote on this topic which explains the problems with CF on shared hosting: http://www.michaels.me.uk/post.cfm/why-coldfusion-railo-are-not-suited-to-shared-hosting On Thu, Oct 2, 2014 at 10:28 PM, Wil Genovese <[email protected]> wrote: > > Russ, > > I love those types of challenges! Yes, I have stabilized very large shared > hosting ColdFusion 10 servers. Even some with hundreds of websites. It can > be true that itâs not always as easy to do, but I know it can be done. Of > course one of the best bangs for the buck is to buy Fusion Reactor when it > comes down to figuring out if a certain siteâs code, DB, etc is a root > cause. Even *I* (:-P) use Fusion Reactor, after all I can only do so much > via mental telepathy. ;-) > > Regards, > Wil > > > > Wil Genovese > Sr. Web Application Developer/ > Systems Administrator > CF Webtools > www.cfwebtools.com > > [email protected] > www.trunkful.com > > On Oct 2, 2014, at 4:18 PM, Russ Michaels <[email protected]> wrote: > > > > > so just to clarify, these are servers with hundreds of different websites > > and customers on right ? not just 1 client/app per server? which is easy > to > > tune > > > > On Thu, Oct 2, 2014 at 10:09 PM, Wil Genovese <[email protected]> > wrote: > > > >> > >> If you are having to do regular restarts for server stability then there > >> is definitely something wrong. At CF Webtools we have work with a large > >> number of clients on CF10 that have very high load websites. None of > them > >> need regular restarts anymore. We are experts at rooting out server > >> configuration issues as well as coding practices that may not be > efficient > >> that can cause problems. > >> > >> There are numerous blog posts on performance tuning for ColdFusion 10 > JVM, > >> Tomcat IIS connectors and code. Some of those are at my blog ( > >> http://www.trunkful.com) or at the ColdFusion Muses blog ( > >> http://coldfusionmuse.com/). Adobe has many blog posts too on server > >> performance and tuning. I highly recommend using these resources to see > if > >> you can resolve the root cause(s) for the server stability issues. > >> > >> *Shameless plug* Or contact us and we can help you. > >> > >> Regards, > >> > >> > >> > >> Wil Genovese > >> Sr. Web Application Developer/ > >> Systems Administrator > >> CF Webtools > >> www.cfwebtools.com > >> > >> [email protected] > >> www.trunkful.com > >> > >> On Oct 2, 2014, at 3:56 PM, Russ Michaels <[email protected]> wrote: > >> > >>> > >>> except we rarely had any such issues with cf4/5, it ran like a dream > >>> compared to CF6+, which is down to java > >>> > >>> On Thu, Oct 2, 2014 at 8:59 PM, UXB Internet <[email protected]> > >>> wrote: > >>> > >>>> > >>>>> we have a scheduled task setup to restart CF every morning. Since we > >>>> have > >>>>> done this we have hardly any cf issues any more. > >>>> > >>>> Wow! How far we have come, he says with great sarcasm, it harkens back > >> to > >>>> the good old CF4 on NT server days. > >>>> > >>>> > >>>> Dennis Powers > >>>> UXB Internet - A website Design and Hosting Company > >>>> P.O. Box 6028, Wolcott, CT 06716 - T:203-879-2844 > >>>> W: http://www.uxbinternet.com > >>>> W: http://www.ctbusinesslist.com > >>>> > >>>> > >>>> > >>>> > >>>> > >>> > >>> > >> > >> > > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:359403 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
