Wojciech Puchar wrote: >> >> Win2003 R2 NTFS RAID10-15 87 25 113 6425 11990 >> Ubuntu Server 7.10 ext3 RAID10-15 129 60 167 >> 36114 72562 >> Ubuntu Server 7.10 JFS RAID10-15 131 64 167 6638 >> 4855 >> Ubuntu Server 7.10 Reiser3 RAID10-15 130 60 159 >> 30307 35101 >> Ubuntu Server 7.10 XFS RAID10-15 104 62 164 39 10 >> FreeBSD 7 UFS+SU RAID10-15 109 43 111 36551 >> 99999 >> FreeBSD 7 UFS+GJ RAID10-15 50 28 103 52460 46604 >> FreeBSD 7 ZFS RAID10-15 95 63 180 40522 20260 >> >> The first three columns describe the system & RAID (e.g. RAID10-15 means >> RAID10 created from 4 15 kRPM drives), the next three are >> write/rewrite/read speed in MB/s, the last two are random files >> created/deleted. I hope the mailer doesn't destroy the formatting too > > could you compare raw device speed between linux and FreeBSD
No, I don't have the system now. > it looks like there is driver problem - low linear speed. I don't think so. It's *very* unlikely a driver can mess up linear speed - it's far more easier to mess up random IO. I don't know why it's so (it might be cause by FreeBSD's tiny MAXPHYS), but it's probably not the driver's fault. I've seen this behaviour with other controllers (including plain SATA). >> ZFS was very good, but not so much when compared to Linux file systems, > > ZFS in your benchmart is similar to UFS. Look at the read speed.
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