https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242773
Bug ID: 242773
Summary: ata driver as module, interrupt storm on atapci0 and
low attachment speed for disks
Product: Base System
Version: 11.3-STABLE
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: e...@free.fr
Created attachment 210107
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=210107&action=edit
11.3-STABLE dmesg for SE7525GP2
Hi,
Intel SE7525GP2 MB (quite old, I know)
When using MINIMAL and trying to load atapci as module, atapci reports low
speed for attached disks :
ada4 at ata2 bus 0 scbus4 target 0 lun 0
ada4: <SanDisk SSD PLUS 120GB UE4500RL> ACS-2 ATA SATA 3.x device
ada4: Serial Number 1841B1803114
ada4: 33.000MB/s transfers (UDMA2, PIO 512bytes)
ada4: 114480MB (234455040 512 byte sectors)
Kernel spits messages about interrupt storm on irq used by atapci.
When ata support is compiled into kernel, the reported speed is fine :
ada4 at ata2 bus 0 scbus4 target 0 lun 0
ada4: <SanDisk SSD PLUS 120GB UE4500RL> ACS-2 ATA SATA 3.x device
ada4: Serial Number 1841B1803114
ada4: 150.000MB/s transfers (SATA 1.x, UDMA5, PIO 512bytes)
ada4: 114480MB (234455040 512 byte sectors)
I've reproduced the same issue using a freshly compiled 12.1-STABLE kernel
Regards
Éric Masson
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