<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/3.0.9"> </HEAD> <BODY> Hi, This patch try to emulate the mmap system call. Where can i find this patch ? I'll try to rewrite it to use mmap instead of reading the whole file in memory... I think, it's a bad idea to integrate it... let linux do his job. Regards Eric On Fri, 2004-05-21 at 02:27, Ethan Galstad wrote: <BLOCKQUOTE TYPE=CITE> <PRE>This patch is a bit old, but I've just gotten around to testing it on the 2.0 code. From what I can tell, there's no measureable difference with or without the patch. I tested three different reporting ranges ("today", "this year", and "last year") on two separate boxes. Both boxes are RedHat 7.2 running kernel-2.4.20- 20.7. One box is a PII 400 w/ 220 MB RAM, an 8 GB SCSI drive and 45 hosts in the report. The other is a PII 300 w/ ~200 MB RAM, an 8 GB SCSI drive and 15 hosts in the report. Report generation times were within 5% of each other on both machines when tested w/ and w/o the patch (sometimes the patches version was actually slightly slower than the nonpatched code). Average report times for "today", "this year" and "last year" are approx: 1.25 sec, 6.2 sec, and 7.7 sec. Perhaps the SCSI drives are doing a better job at predictive reads than the IDE drives you tested. Not sure. Or perhaps its something else. For the record, I have not tested this against 1.2, but I wouldn't think the results would be much different. Anyone else tried this patch out? If so, what were your findings?</PRE> </BLOCKQUOTE> <PRE><TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%"> <TR> <TD> <PRE>-- Eric BOLLENGIER, Administrateur Système - Poste 1325 SIGMA Informatique http://www.sigma.fr 3 rue Newton, BP 4127, 44241 La Chapelle sur Erdre Cedex tel : 02.40.37.14.00</PRE> </TD> </TR> </TABLE> </PRE> </BODY> </HTML>