[jboss-dev] Small boottime improvement

[Sacha Labourey]

at this pace, in 90 days JBoss AS will take 0sec to boot ;)

On Mon, Feb 15, 2010 at 16:48, Kabir Khan <kabir.khan at jboss.com> wrote:

> Another 200ms taken off by this change indexing the ControllerStates in the
> controller making state comparisons more efficient:
> http://community.jboss.org/message/526380#526380
>
> Average startup time for me is 18s687ms compared with 18s856ms with this
> morning's setup.
> For minimal, the startup times are about 4s780ms with both setups down from
> 5s224ms with AS-6.0.0.M2
>
>
> On 15 Feb 2010, at 12:22, Kabir Khan wrote:
>
> > Getting rid of the @Dependency annotation checks from
> AOPDependencyBuilder https://jira.jboss.org/jira/browse/JBKERNEL-98 brings
> the startup time down to the 18s range.
> >
> > kernel 2.2.0-SNAPSHOT, from a few days ago (Alpha6 with the extra
> resolveContexts loop optimization)
> > mdr 2.2.0-Alpha1
> >
> ================================================================================
> > 20s:192ms (1)
> > 19s:733ms (3)
> > 19s:968ms (4)
> >
> > kernel 2.2.0-SNAPSHOT, includes the @Dependency stuff
> > mdr 2.2.0-SNAPSHOT
> > ============================================
> > 18s:905ms (2)
> > 18s:604ms (4)
> > 18s:657ms (6)
> >
> >
> >
> > On 12 Feb 2010, at 15:50, Kabir Khan wrote:
> >
> >> I found that ScopeKey's hashCode was not being calculated correctly (
> http://community.jboss.org/message/526058#526058), and fixed this in a
> local jboss-mdr snapshot, which gives another tiny enhancement. Here are
> today's numbers, same setup as last time.
> >>
> >> kernel 2.2.0-Alpha5
> >> mdr 2.2.0-Alpha1
> >> ===============
> >> 34s:696ms (1)
> >> 20s:562ms (2)
> >> 20s:349ms (7)
> >> 20s:463ms (10)
> >> 20s:622ms (13)
> >> 20s:582ms (16)
> >> 20s:35ms (19)
> >> -------------------------
> >> Average ignoring (1): 20s436ms
> >>
> >> kernel 2.2.0-SNAPSHOT
> >> mdr 2.2.0-Alpha1
> >> ===================
> >> 29s:637ms (3)
> >> 19s:627ms (4)
> >> 19s:786ms (8)
> >> 20s:2ms (11)
> >> 20s:432ms (14)
> >> 19s:827ms (17)
> >> 19s:731ms (20)
> >> -------------------------------
> >> Average ignoring (3): 19s900ms
> >>
> >> kernel 2.2.0-SNAPSHOT
> >> mdr 2.2.0-SNAPSHOT
> >> ============================
> >> 27s:167ms (5)
> >> 19s:834ms (6)
> >> 19s:702ms (9)
> >> 19s:349ms (12)
> >> 20s:228ms (15)
> >> 19s:346ms (18)
> >> 19s:315ms (21)
> >> ----------------------------
> >> Average ignoring (5): 19s629ms
> >>
> >> Now that I'm more into profiling stuff, I'll see if profiling minimal as
> suggested by Bill makes more sense to me, if not I'll do a few more cycles
> of these.
> >>
> >>
> >> On 11 Feb 2010, at 12:25, Kabir Khan wrote:
> >>
> >>> I have been doing some work on profiling and optimizing the
> jboss-dependency project [1] for kernel 2.2.0.Alpha6 and it seems to have
> had a small, but still measurable impact :-)
> >>>
> >>> I did a few startups of AS with jboss kernel 2.2.0.Alpha5 and with a
> local snapshot. This snapshot contains the work done for Alpha6 with the
> addition of removing the break in the resolveContexts loop as mentioned in
> the forum thread.
> >>>
> >>> The startups were done on a freshly rebooted machine with nothing else
> running. The startup orders are given in brackets, so I started Alpha5
> twice, then SNAPSHOT twice and so on.
> >>>
> >>> 2.2.0-Alpha5
> >>> ----------------------
> >>> 37s:247ms (1)
> >>> 20s:573ms (2)
> >>> 20s:275ms (5)
> >>> 20s:127ms (7)
> >>> 20s:433ms (9)
> >>> 20s:329ms (10)
> >>> 20s:890ms (13)
> >>>
> >>>
> >>> 2.2.0-SNAPSHOT
> >>> ------------------------
> >>> 29s:563ms (3)
> >>> 19s:965ms (4)
> >>> 19s:821ms (6)
> >>> 20s:332ms (8)
> >>> 19s:618ms (10)
> >>> 19s:905ms (12)
> >>> 19s:900ms (14)
> >>>
> >>> One strange thing is that the first time I started each server they
> took loads longer than the other times, does somebody know the reason for
> that?
> >>>
> >>> Ignoring those initial times leaves me with average start times of:
> >>> Alpha5: 20s437ms
> >>> SNAPSHOT: 19s923ms
> >>>
> >>> I'm going to have a final look at jboss-dependency to see if there are
> any other obvious and easy fixes before moving on to have a look at
> jboss-kernel.
> >>>
> >>> [1] http://community.jboss.org/message/525047#525047
> >>> _______________________________________________
> >>> jboss-development mailing list
> >>> jboss-development at lists.jboss.org
> >>> https://lists.jboss.org/mailman/listinfo/jboss-development
> >>
> >>
> >> _______________________________________________
> >> jboss-development mailing list
> >> jboss-development at lists.jboss.org
> >> https://lists.jboss.org/mailman/listinfo/jboss-development
> >
> >
> > _______________________________________________
> > jboss-development mailing list
> > jboss-development at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/jboss-development
>
>
> _______________________________________________
> jboss-development mailing list
> jboss-development at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/jboss-development
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/jboss-development/attachments/20100215/e431c1c4/attachment.html