>Windows VM usage is pretty efficient and has been ever since the >advent of 32-bit Disk Access in Windows 3.0 - around 1991. > >Windows 3.0, 3.1, Windows for Workgroups 3.11, 95, 98, 98SE and ME >are all DOS-based but work much better with VM. I've benchmarked them, >tested them all, and I am telling you this is a *fact.* >If you disable VM they will run *slower.*
Yes, I have seen this personally. One note, if you add RAM to NT 4+, increase the VM size (2X RAM), or you may get weird stability issues. and >Since most older Macs have an small SCSI disk as well as a >newer big SCSI or IDE disk, you can easily dedicate your old >SCSI drive to VM. My 2GB Apple drive is partitioned into >1.5GB for a clean copy of MacOS 9.1 and 500MB for OS X VM, >on a UFS volume so MacOS 9 can't see it at all. Have you done any testing on the performance of HFS+ vs. UFS for a swapfile? Some of the tests reported on the Darwin users mailing list indicate UFS access is slower than HFS+ access. >Now I've moved it back again and the machine seems considerably >more responsive, especially under load. There may not be a >disk access light, but I can *hear* it swapping to the old >SCSI drive - my new IDE drive is silent, I can't hear it >over the PSU fan. One recommendation I have is don't move your VM to a _slow_ disk. When I moved the swapfile to a separate but slower disk (internal 50-pin SCSI, 5 MB/sec speed), I had _poorer_ performance. When I moved my swapfile from the boot disk (internal 50-pin SCSI, 7 MB/sec speed) to a disk on a PCI SCSI card (68-pin UltraSCSI, 30 MB/sec speed), I noticed a _major_ improvement. My system won't boot from that old ATTO card, but it works great for swap disks. I still think Apple should provide a mechanism for raw swap partitions, even if the system is not configured that way from the factory. If they want the XServe to have a decent amount of market penetration, raw swap partitions are a must. -- Charles Dostale [EMAIL PROTECTED] System Administrator, Silver Oaks Communications http://www.silveroaks.com 824 17th Street, Moline IL USA 61265 309-797-9898 -- Unsupported OS X is sponsored by <http://lowendmac.com/> Support Low End Mac <http://lowendmac.com/lists/support.html> Unsupported OS X list info <http://lowendmac.com/lists/unsupported.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive <http://www.mail-archive.com/unsupportedosx%40mail.maclaunch.com/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
