open and close the nh-session for each message/operation. 2009/3/17 Utopico <[email protected]>
> > In a real application there would be many datasources reporting data > (at less frequent intervals). So how would you suggest to handle the > session in this case? A realistic scenario would about 30 datasources > reporting data every 60 minutes. > > > On 17 Mar, 12:16, Oskar Berggren <[email protected]> wrote: > > Session is not really meant to be long running. Try creating a new > session > > for each "run" or at least clear the sessions cache. > > > > /Oskar > > > > 2009/3/17 Utopico <[email protected]> > > > > > > > > > Using same session (at least th. I have now done a bit more > > > monitoring. And it seems that the CPU and memory load is increasing > > > over time while the actual disc writes does not. Also the performance > > > of the database server does not seem to change when monitoring the > > > database directly while the application is running. > > > > > On 17 Mar, 11:07, Ayende Rahien <[email protected]> wrote: > > > > Are you using the same session? Or creating a session every time? > > > > > > On Tue, Mar 17, 2009 at 11:31 AM, Utopico <[email protected]> > > > wrote: > > > > > > > I have used hibernate for about half a year, but not with very high > > > > > load. Yesterday I had an application running that slowed down > > > > > significantly after running through the night (from fraction of a > > > > > second to 10-15 seconds). I am pretty sure that there is somthing > can > > > > > be done to improve this, or a way to find out what is the cause. I > > > > > need some help with this. > > > > > > > So for my application > > > > > * I use NHibernate 2.0.0.GA > > > > > * Visual studio 2008 > > > > > * FirebirdSQL 2.0 > > > > > * received data every 15 seconds on a serial port which is then > > > > > decoded. This results in: > > > > > - check for datatype (cached query through SysCache since these > > > > > values are updated seldom, but checked often) and possible addition > of > > > > > new datatype entry (each datavalue has a datatype associated with > it) > > > > > - using sequence generator for ID on datavalue and dataobject > > > > > - insert of a dataobject which has about 120 values associated as > > > > > follows (results in one dataobject insert and 120 inserts: > > > > > [NHibernate.Mapping.Attributes.Bag(Table = "DATA_VALUE", > > > > > Inverse = true, Lazy = true, OrderBy = "TYPE_ID ASC, IDX ASC", > Cascade > > > > > = "all-delete-orphan")] > > > > > [NHibernate.Mapping.Attributes.Key(1, Column = "REC_ID")] > > > > > [NHibernate.Mapping.Attributes.OneToMany(2, ClassType = > typeof > > > > > (Nortek.SeaState.Domain.DataValue))] > > > > > public virtual IList<DataValue> Values > > > > > { > > > > > get > > > > > { > > > > > return this._values; > > > > > } > > > > > set > > > > > { > > > > > this._values = value; > > > > > } > > > > > } > > > > > * All the above is inclosed in a transaction with ReadCommited > > > > > > > Would I benefit from batch inserts or any other performance trick? > Or > > > > > is there some stupid flaw in my way of using hibernate? > > > -- Fabio Maulo --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "nhusers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nhusers?hl=en -~----------~----~----~----~------~----~------~--~---
