On Thu, 2003-03-20 at 06:37, Kevin Bowen wrote: > Hi, > I was wondering if anyone knows what the story is with how redhat decides what > default hard disk settings (i.e. hdparm settings for DMA, 32 bit IO, unmaskirq etc) > to use on a new install? I've done several installs, and on some of them I've seen > it default to all features turned on, other times, all features off. Does redhat > installer have a blacklist, or a whitelist of drive/controller combo's on which it > will enable certain features? Or are these variations bugs? On the systems where > everything is turned off by default, I've manually enabled DMA and 32bit, but the > man page entry for unmaskirq scares me a bit. Does anyone know of any resource for > determining the safety of various settings for various drives/controllers? > > ************************************************************************ > Kevin Bowen > UCSD ACS/Network Operations, Customer Support Help Desk > [EMAIL PROTECTED] / (858) 534-1857 / http://www-no.ucsd.edu > Phone Support: 7 AM to 7 PM / Walk-in Support: 10 AM to 3:30 PM > ************************************************************************
By default, I always check the /etc/sysconfig/harddisks file to see what's been either turned on, or left off; this is where you can specify your "tuning" params in an easy way. As of yet, I've never been impressed with the EIDE performance "out of the box", so I tend to pass params to the kernel as well as tweak the settings of the /etc/sysconfig/harddisks file. On RH 8.0, I have experienced some problems with the combination of the two - ending with corruption and hosed performance. Otherwise, it's been a good combo for me over the years. HTH -- Thu Mar 20 06:45:00 EST 2003 06:45:00 up 1 day, 8:30, 4 users, load average: 0.07, 0.11, 0.09 ------------------------------------------------------------------ | __ __ | kuhn media australia | | / ,, /| |'-. | http://kma.0catch.com | | .\__/ || | | |=================================| | _ / `._ \|_|_.-' | stephen kuhn | | | / \__.`=._) (_ | email: [EMAIL PROTECTED] | | |/ ._/ |"""""""""| | email: [EMAIL PROTECTED] | | |'. `\ | | | icq: 5483808 | | ;"""/ / | | | | | smk ) /_/| |.-------.| | mobile: 0410-728-389 | | ' `-`' " " | Berkeley, New South Wales, AU | ------------------------------------------------------------------ linux user:267497 * MDK 9.1 * PC/Mac/Linux/Networking/Consulting machine no:194239 * RH 7.3 * Sales - Service - Support - Tutor ------------------------------------------------------------------ ** This messages was composed on a 100% Microsoft free computer ** A mathematician, a doctor, and an engineer are walking on the beach and observe a team of lifeguards pumping the stomach of a drowned woman. As they watch, water, sand, snails and such come out of the pump. The doctor watches for a while and says: "Keep pumping, men, you may yet save her!!" The mathematician does some calculations and says: "According to my understanding of the size of that pump, you have already pumped more water from her body than could be contained in a cylinder 4 feet in diameter and 6 feet high." The engineer says: "I think she's sitting in a puddle." -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
