I forward-ported Tejun's PMP patches to libata#upstream (my first attempt at it a few weeks ago failed, but this round works fine, tested at each branch stage), and in using them, I have noticed a bit of oddity. While dmesg claims that 3.0Gbps was negotiated, the combined performance of the 5 disks never exceeds 1.5Gbps, no matter how I combine them. Is something in the driver overriding the 3Gbps speed bits somewhere? My SATA enclosure the 5-disk Fusion 500P from Sonnet (PMP 0x1095:0x3726) Controller: Mass storage controller: Silicon Image, Inc. SiI 3132 Serial ATA Raid II Controller (rev 01) Drives: 5x Seagate ST3320620AS (7200.10 320Gbyte) ata9: SATA max UDMA/133 cmd 0xFFFFC20000070000 ctl 0x0 bmdma 0x0 irq 18 ata10: SATA max UDMA/133 cmd 0xFFFFC20000072000 ctl 0x0 bmdma 0x0 irq 18 scsi10 : sata_sil24 ata9: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata9.15: Port Multiplier 1.1, 0x1095:0x3726 r23, 5 ports, feat 0x9/0x9 ata9.00: hard resetting port ata9.00: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata9.01: hard resetting port ata9.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata9.02: hard resetting port ata9.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata9.03: hard resetting port ata9.03: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata9.04: hard resetting port ata9.04: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata9.00: ATA-7, max UDMA/133, 625142448 sectors: LBA48 NCQ (depth 31/32) ata9.00: configured for UDMA/133 ata9.01: ATA-7, max UDMA/133, 625142448 sectors: LBA48 NCQ (depth 31/32) ata9.01: configured for UDMA/133 ata9.02: ATA-7, max UDMA/133, 625142448 sectors: LBA48 NCQ (depth 31/32) ata9.02: configured for UDMA/133 ata9.03: ATA-7, max UDMA/133, 625142448 sectors: LBA48 NCQ (depth 31/32) ata9.03: configured for UDMA/133 ata9.04: ATA-7, max UDMA/133, 625142448 sectors: LBA48 NCQ (depth 31/32) ata9.04: configured for UDMA/133 ata9: EH complete scsi11 : sata_sil24 ata10: SATA link down (SStatus 0 SControl 300) scsi 10:0:0:0: Direct-Access ATA ST3320620AS 3.AA PQ: 0 ANSI: 5 SCSI device sdi: 625142448 512-byte hdwr sectors (320073 MB) sdi: Write Protect is off sdi: Mode Sense: 00 3a 00 00 (rest of the disks sdi-> sdm all brought up in an identical fashion here). -- Robin Hugh Johnson Gentoo Linux Developer E-Mail : robbat2@xxxxxxxxxx GnuPG FP : 11AC BA4F 4778 E3F6 E4ED F38E B27B 944E 3488 4E85
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