lunarg
Guru
Joined: 07 Jan 2004
Posts: 508
Location: Peer, Belgium
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 Posted: Tue Jun 14, 2005 10:04 am Post subject: Slow response when syncing software raid1 |
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Hi all
I'm experimenting here with a new Supermicro 1U server with a 2.8ghz Xeon, 1GB RAM, 2 SATA-150 disks on the on-board Intel SATA controller, and one disk as JBOD on the on-board Adaptec RAID controller.
The two disks on the Intel controller have their partitions in RAID1 mirrored; the one on the Adaptec used as spare.
So far, this all works well.
When I fail a member of an array, and have it resynced (this to test whether this runs correctly), it's another story.
Although syncing works fine, during that time, the server becomes quite sluggish, and regularly hangs, in particular things to disk operations. A simple 'ls' from a dir with only a few files can take several minutes to complete. It also doesn't seem to matter which disks are involved, but it seems worse when it's syncing the two disks on the Intel controller (meaning it's not the cause of the custom-compiled mv_sata.ko module, required by the Adaptec chip).
Since I never had this on any other server or pc before, it might be hardware-related. Below is a dump of lspci:
| Code: |
0000:00:00.0 Host bridge: Intel Corp. Server Memory Controller Hub (rev 0c)
0000:00:00.1 ff00: Intel Corp. Memory Controller Hub Error Reporting Register (rev 0c)
0000:00:02.0 PCI bridge: Intel Corp. Memory Controller Hub PCI Express Port A0 (rev 0c)
0000:00:04.0 PCI bridge: Intel Corp. Memory Controller Hub PCI Express Port B0 (rev 0c)
0000:00:06.0 PCI bridge: Intel Corp. Memory Controller Hub PCI Express Port C0 (rev 0c)
0000:00:1d.0 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #1 (rev 02)
0000:00:1d.1 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #2 (rev 02)
0000:00:1d.2 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #3 (rev 02)
0000:00:1d.3 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #4 (rev 02)
0000:00:1d.7 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02)
0000:00:1e.0 PCI bridge: Intel Corp. 82801 PCI Bridge (rev c2)
0000:00:1f.0 ISA bridge: Intel Corp. 82801EB/ER (ICH5/ICH5R) LPC Bridge (rev 02)
0000:00:1f.2 IDE interface: Intel Corp. 82801EB (ICH5) Serial ATA 150 Storage Controller (rev 02)
0000:00:1f.3 SMBus: Intel Corp. 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02)
0000:01:00.0 PCI bridge: Intel Corp. PCI Bridge Hub A (rev 09)
0000:01:00.1 PIC: Intel Corp. PCI Bridge Hub I/OxAPIC Interrupt Controller A (rev 09)
0000:01:00.2 PCI bridge: Intel Corp. PCI Bridge Hub B (rev 09)
0000:01:00.3 PIC: Intel Corp. PCI Bridge Hub I/OxAPIC Interrupt Controller B (rev 09)
0000:02:03.0 Ethernet controller: Intel Corp. 82546GB Gigabit Ethernet Controller (rev 03)
0000:02:03.1 Ethernet controller: Intel Corp. 82546GB Gigabit Ethernet Controller (rev 03)
0000:03:04.0 RAID bus controller: Marvell Technology Group Ltd. MV88SX6041 4-port SATA II PCI-X Controller (rev 03)
0000:06:01.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27)
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Kernel is an SMP 2.6.8-686 with Debian patches, and HIGHMEM support.
Anyone have similar experiences?
Thanks.
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