Subject RE: [firebird-support] Re: SS 1.0 on Solaris SPARC
Author Alan McDonald
> I could be garbage collection, but I would think maybe a bug in
> garbage collection as we do not experience this with 1.0.3 on Windows.
> I don't think GC would peg the CPU forever and never relent (the
> longest we've let it go was 7 hours).
> All the transactions are very short lived, most are less than a
> second, the largest transactions may be around 5-10 seconds. Also note
> that during this hours spent at 100% CPU, no time was spent on Disk IO.

to rule out GC - set it to 0 and see what happens

> R.
> --- In, "Adam" <s3057043@y...> wrote:
> > Smells like a garbage collection thread to me. If so, the question
> > becomes why are you accumulating so much garbage. Possibly it might
> > help if you schedule a sweep during low activity period. In the long
> > run, identify old transactions (generally long running ones) and make
> > sure they are committed as soon as they have finished. Commit
> > retaining is no good, commit needs to be run.
> >
> > Having old transactions lying around prevents garbage from being
> > collected as it is stumbled upon. I believe low selectivity indices
> > can also make sweep take a lot longer.
> >
> > Adam