In message <xfmail.990430113648....@polstra.com>, John Polstra writes: >Poul-Henning Kamp wrote: >> In message <xfmail.990430112019....@polstra.com>, John Polstra writes: >>> >>>You're being totally unrealistic. You can't create >2^32 of >>>_anything_ on an i386 without running out of memory. >> >> Well, John, you can, the newer ones will address 2^36 bytes of memory >> and even a i386 can address 2^32 bytes or 2^35 bits... >> >> But hair splitting aside, > >If we're going to split hairs, how about this: To make a reference >count exceed 2^32, you need to have >2^32 different pointers pointing >to it. A pointer takes 2^2 bytes on the i386. So that's 2^34 bytes >of memory you'd need just to store the pointers. > >You'd better hope you don't get a panic on that mother! It might >take quite awhile to write a 16 GByte crash dump. :-)
Still only 1/4 the addressable store of P5 and upwards... :-) -- Poul-Henning Kamp FreeBSD coreteam member p...@freebsd.org "Real hackers run -current on their laptop." FreeBSD -- It will take a long time before progress goes too far! To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-current" in the body of the message
