Hi Diego, The reason I use RAID5 because I don't want to waste too much space on redundancy whilst taking the advantage of read. Over 99% of disk access are expected to be reading.
I could split to 2xRAID5 but I will have difficulty with file management later. Furthermore, the system would use 2 disks for parity. I don't want to lose too much space. [EMAIL PROTECTED] SCSI disks are still very expensive. :( -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Diego F. Arias R. Sent: Sunday, 28 September 2008 11:25 PM To: Bill Moran Cc: Wojciech Puchar; Danny Do; [email protected] Subject: Re: Hard disk bottle neck. On Sun, Sep 28, 2008 at 11:17 AM, Bill Moran <[EMAIL PROTECTED]> wrote: > Wojciech Puchar <[EMAIL PROTECTED]> wrote: >> >> after you recompile the kernel with that patch, check your disk >> performance in some directory consisting of many large files >> >> cd that_dir >> for x in *;do (cat $x >/dev/null &);done >> >> while running systat,:vmstat on another console > > More specifically, do this before and after you make the change, to > demonstrate whether or not you actually fixed the problem. > > -- > Bill Moran > http://www.potentialtech.com > _______________________________________________ > [email protected] mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "[EMAIL PROTECTED]" > do you check gstat? If the patch dont works, maybe yoy may try to split the raid (2 raid 5) or better use a raid 10. The raid 5 isnt a top performance raid. -- mmm, interesante..... _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]" _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
