From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (from majordomo@localhost) by pauillac.inria.fr (8.7.6/8.7.3) id LAA01535; Fri, 22 Mar 2002 11:17:42 +0100 (MET) X-Authentication-Warning: pauillac.inria.fr: majordomo set sender to owner-caml-list@pauillac.inria.fr using -f Received: from nez-perce.inria.fr (nez-perce.inria.fr [192.93.2.78]) by pauillac.inria.fr (8.7.6/8.7.3) with ESMTP id LAA18158 for ; Fri, 22 Mar 2002 11:17:41 +0100 (MET) Received: from mrwall.kal.com (mrwall.kal.com [194.193.14.236]) by nez-perce.inria.fr (8.11.1/8.11.1) with SMTP id g2MAHev06973; Fri, 22 Mar 2002 11:17:40 +0100 (MET) Received: from mrwall.kal.com [194.193.14.236] (HELO localhost) by mrwall.kal.com (AltaVista Mail V2.0J/2.0J BL25J listener) id 0000_003e_3c9b_05d8_937c; Fri, 22 Mar 2002 10:22:16 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Subject: RE: [Caml-list] The DLL-hell of O'Caml content-class: urn:content-classes:message x-mimeole: Produced By Microsoft Exchange V6.0.4417.0 Date: Fri, 22 Mar 2002 10:14:54 -0000 Message-ID: <8E31D6933A2FE64F8AE3CC1381EEDCE72A0A3E@NT.kal.com> Thread-Topic: [Caml-list] The DLL-hell of O'Caml Thread-Index: AcHRBQwd6ZPJUUufSQWuAORTa414GQAhRsfQ From: "Dave Berry" To: "Xavier Leroy" , "Christopher Quinn" , Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk I don't have figures for this, unfortunately. I believe the TIL folks use this technique to keep the size of their type information manageable; possibly they have some measurements. I can offer two anecdotal examples. Way back when the Edinburgh CS department did all its teaching on one multi-user machine with about 8M RAM, the Edinburgh ML implementation was quite unusable because the top-level rapidly grew too large. Hash-consing made it manageable, with no appreciable loss of performance. I believe Harlequin's implementation of Dylan also introduced hash-consing to reduce the size of the program databases (among other tricks). This increased performance by reducing thrashing. It's always hard to predict how much effect a given technique will have in a given situation. In practice someone would have to implement it and measure the effect. -----Original Message----- From: Xavier Leroy [mailto:xavier.leroy@inria.fr] Sent: 21 March 2002 18:13 To: Christopher Quinn Cc: caml-list@inria.fr Subject: Re: [Caml-list] The DLL-hell of O'Caml > Any idea how much improvement would come from hash-consing,=20 > as Dave Berry suggested? And only that part of a module's=20 > signature which pertained to actual usage would need=20 > inclusion, no? And only of those modules externally provided=20 > upon which one's project depends, ie. the standard library,=20 > not the internal project modules? No idea. It's certainly possible to reduce the size of the signature information that has to be retained; how much and at what cost, I don't know. - Xavier Leroy ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners