sata disk speed negotiation with heavy disk activity
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Linux |
Invalid
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
linux-source-2.6.22 (Ubuntu) |
Won't Fix
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: linux-source-2.6.22
Every time my disk gets under heavy load, It gets really slow, where sometimes you can take up to 25 min to copy 700mb.
Here's what I get in dmesg:
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Jan 29 19:22:51 zeus kernel: [88872.317250] ata7.00: exception Emask 0x10 SAct 0x0 SErr 0x780100 action 0x2
Jan 29 19:22:51 zeus kernel: [88872.317255] ata7.00: (irq_stat 0x08000000)
Jan 29 19:22:51 zeus kernel: [88872.317258] ata7.00: cmd 25/00:58:
Jan 29 19:22:51 zeus kernel: [88872.317259] res 50/00:00:
Jan 29 19:22:51 zeus kernel: [88872.627717] ata7: soft resetting port
Jan 29 19:22:51 zeus kernel: [88872.799468] ata7: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
Jan 29 19:22:51 zeus kernel: [88872.821938] ata7.00: configured for UDMA/33
Jan 29 19:22:51 zeus kernel: [88872.821945] ata7: EH complete
Jan 29 19:22:51 zeus kernel: [88872.822272] sd 7:0:0:0: [sdc] 976773168 512-byte hardware sectors (500108 MB)
Jan 29 19:22:51 zeus kernel: [88872.822487] sd 7:0:0:0: [sdc] Write Protect is off
Jan 29 19:22:51 zeus kernel: [88872.822490] sd 7:0:0:0: [sdc] Mode Sense: 00 3a 00 00
Jan 29 19:22:51 zeus kernel: [88872.822829] sd 7:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
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As far as I could tell, this has to do with http://
Hi Andre,
The Hardy Heron Alpha series is currently under development and contains an updated version of the kernel (2.6.24). From your comments I would then assume this should be resolved with the Hardy kernel. It would be helpful if you could test the latest Hardy Alpha release: http:// www.ubuntu. com/testing . You should be able to then test the new kernel via the LiveCD. If you can, please verify if this bug still exists or not and report back your results. We'll keep this report open against the actively developed kernel bug against 2.6.22 this will be closed. Thanks.