Date: Fri, 19 Jan 1996 18:06:45 +0000 () From: "John S. Dyson" <toor@dyson.iquest.net> To: se@zpr.uni-koeln.de (Stefan Esser) Cc: dyson@freefall.freebsd.org, current@freebsd.org Subject: Re: cvs commit: src/sys/vm default_pager.c device_pager.c swap_pager.c vm_fault.c vm_glue.c vm_kern.c vm_map.c vm_map.h vm_mmap.R Message-ID: <199601191806.SAA00844@dyson.iquest.net> In-Reply-To: <199601192242.AA05035@Sysiphos> from "Stefan Esser" at Jan 19, 96 11:42:10 pm
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I am including -current in the distribution so that others might give the code a try and find out if things have gotten slower (maybe get it fixed ASAP!!!) > > These changes seem to have made the file system performance > much lower than it used to be. I assume that FS clustering > doesn't work as before: > > -------Sequential Output-------- ---Sequential Input-- --Random-- > -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- > Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU > before 100 1532 98.2 6154 67.6 2781 56.9 1664 98.6 6224 74.1 79.2 9.1 > after 100 1501 98.0 3337 29.7 1337 22.6 1225 80.0 3402 36.2 77.3 8.4 > There should have been NO change in write performance other than less code is being executed. Read performance might be *very very* slightly decreased, but in reality should be faster because again, less code is being executed. I am rerunning my tests, but I see nothing but improvements. Anyone else give it a try??? Let me know your results. Thanks... John Dyson dyson@freebsd.org
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