Civilme went into this at great length recently. I'd refer you to his comments about IDE RAID (or rather the lack of any REAL IDE raid unless you use one of two specific hardware devices to accomplish this.)
The Promise IDE Raid is an attempt to hoodwink the user... But lest you flame me... Try searching the Archives. -JMS |-----Original Message----- |From: [EMAIL PROTECTED] |[mailto:[EMAIL PROTECTED]] On Behalf Of |[EMAIL PROTECTED] |Sent: Monday, December 03, 2001 8:11 AM |To: [EMAIL PROTECTED] |Subject: Re: [expert]3ware and Samba performance stinks under |8.1 (relative to other things) | | |Well does anyone have input on hardware based IDE raid cards |under Linux then? I already mentioned that the performance |that I get out of my 3ware controller isn't all that and I |mentioned this along side with my Samba comment that you all |responded to that this was with the same machine using the |3ware card. If you want I can post my smb.conf file so you |can pick it apart, but I think the deeper issue are the |drivers for the 3ware card. I mean if all of my hardware is |supposed to be all that (along with the 3ware BIOS), the |kernel and Samba are all that, then that only leaves the 3ware |drivers that are compiled into the stock kernel released with |mdk 8.1, right? Also, the most troubling problem with the |3ware card that I'm having right now under mdk 8.1 is |multitasking. If I have one disk intensive task going like |copying a file from one partition to the next or have 2-3 |streams over the network (under Samba, but no blame being |implied on it here) and then another stream for playing an |mp3, the mp3 will pause for up to several seconds at a time at |regular intervals. Also under a moderate load like this I |noticed that the buffers regularly empty while burning a CD at |8x. Under mdk 7.2 with one hard drive (the exact same as what |I'm using on the 3ware |controller) and a Promise Ultra66 controller I could have many |more streams going demanding more bandwidth and the streams |that where time sensitive (mp3 and burning simultaneously) |went without a hitch. |
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