Operating Systems > Linux and UNIX
Sloooow Redhat 7.2?
Agent007:
Where can I find more info on hdparm? What are the parameters that would boost performance? I tried out hdparm -I /dev/hdc1 and the transfer rates=20MB/s or something, not too happy... Also can someone suggest some good sites which deal with Linux tweaks?
thanks!
quote:Originally posted by VoidMain:
On the "hdparm" test. How many MB/s is your IDE drive running? What window manager are you running? I have an older very cheap AMD K6-2 450Mhz system and it is slow, but then I also have an AMD Athalon 1600 w/512MB and a Geforce2 w/32MB and it just plain screams.
One thing that can make a HUGE difference is the IDE options. I have had drives that went from 4MB/s to 20MB/s by playing with "hdparm" settings. Although on RedHat 7.2 and 7.3 I haven't had to optimize as it's optimized my drives correctly at install time. Something to think about and it definately makes your apps load *much* slower if not optimized properly. It can very possibly be the most dramatic performance improvement you can make.
I also recompile my kernel and optimize it for whatever processor I am running on although it may not give you a "noticeable" increase in app load time it's something to try.
--- End quote ---
choasmaster:
i forget the commmand to benchmark the hd.
choasmaster:
never mind
voidmain:
Well, you can type "man hdparm" for the man page, or you can type "/sbin/hdparm" and get a list of options, or you can type in "hdparm" in http://www.google.com/ and the first link it comes up with has a nice article on it on O'Reilly even though it is a little outdated.
/sbin/hdparm /dev/hda
will show you what options are currently turned on for the drive. You can change those options and more (be careful though, read the docs). It also depends heavily on the drive that you are using as to what options you can set (Ultra DMA 66/100, etc).
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