xom-interest AT lists.ibiblio.org

Subject: XOM API for Processing XML with Java

List archive

Re: [XOM-interest] uuid generation (was Re: Scope of namespaces)

From: Steve Loughran <steve.loughran AT gmail.com>
Cc: xom-interest AT lists.ibiblio.org
Subject: Re: [XOM-interest] uuid generation (was Re: Scope of namespaces)
Date: Tue, 7 Feb 2006 10:07:54 +0000

On 2/7/06, Tatu Saloranta <cowtowncoder AT yahoo.com> wrote:

>
> But I wouldn't think that jdk1.5 generation method
> should be very inefficient? It of course depends on
> random number generator being used, but still... at
> least Jug was able to churn uuids at about 100k/second
> (using SecureRandom in case of random-based uuid)
> rate.
>
> So how slow is JDK1.5's method? Maybe I'll go and test
> it out now, having some excuse to check it out.

Look at the source: Its serialized. if you have one thread creating
many uuids, you dont take a hit, but if you have many threads, then
you go at the rate of the slowest.

Re: [XOM-interest] Scope of namespaces , (continued)
- Re: [XOM-interest] Scope of namespaces, Elliotte Harold, 02/06/2006
  - Re: [XOM-interest] Scope of namespaces, peter murray-rust, 02/06/2006
    - Re: [XOM-interest] Scope of namespaces, Steve Loughran, 02/06/2006
      - Re: [XOM-interest] Scope of namespaces, Ed Davies, 02/06/2006
      - [XOM-interest] uuid generation (was Re: Scope of namespaces), Tatu Saloranta, 02/06/2006
        
        Re: [XOM-interest] uuid generation (was Re: Scope of namespaces), Steve Loughran, 02/07/2006
        
        Re: [XOM-interest] uuid generation (OT), Tatu Saloranta, 02/07/2006
        
        Re: [XOM-interest] uuid generation (was Re: Scope of namespaces), Nils Kilden-Pedersen, 02/07/2006
        
        Re: [XOM-interest] uuid generation (was Re: Scope of namespaces), Wolfgang Hoschek, 02/07/2006
        
        Re: [XOM-interest] uuid generation (was Re: Scope of namespaces), Steve Loughran, 02/07/2006
        Re: [XOM-interest] uuid generation (was Re: Scope of namespaces), Tatu Saloranta, 02/07/2006
        Re: [XOM-interest] uuid generation (was Re: Scope of namespaces), Wolfgang Hoschek, 02/07/2006
        
        Re: [XOM-interest] uuid generation (was Re: Scope of namespaces), Wolfgang Hoschek, 02/07/2006
    - Re: [XOM-interest] Scope of namespaces, Ed Davies, 02/06/2006
    - Re: [XOM-interest] Scope of namespaces, Michael Kay, 02/07/2006
    - Re: [XOM-interest] Scope of namespaces, peter murray-rust, 02/08/2006