Hi, after upgrading from linux 2.6.15.7 to 2.6.16.2 I noticed an extreme slowdown of the SATA disks on my system. Writing/reading a 8GB file showed that reading performes with less than half the speed on 2.6.16 (strangely hdparm shows almost no difference). The two affected disks are connected to the Intel 82801GB/GR/GH (ICH7 Family) Serial ATA Controller. Disks on the Silicon Image/Intel IDE Controllers are not affected. I didn't have the chance yet to test if this problem also exists on the Silicon Image SATA Controller. Please tell me if there is any other useful information I can provide =) Linux 2.6.15.7 --- # time dd if=/dev/zero of=/benchfile bs=1M count=8192 8192+0 records in 8192+0 records out 8589934592 bytes (8.6 GB) copied, 132.224 seconds, 65.0 MB/s real 2m12.347s user 0m0.018s sys 0m18.398s # time dd if=/benchfile of=/dev/null bs=1M 8192+0 records in 8192+0 records out 8589934592 bytes (8.6 GB) copied, 130.547 seconds, 65.8 MB/s real 2m10.670s user 0m0.023s sys 0m14.238s # hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 4488 MB in 2.00 seconds = 2244.34 MB/sec Timing buffered disk reads: 212 MB in 3.02 seconds = 70.30 MB/sec Linux 2.6.16.2 --- # time dd if=/dev/zero of=/benchfile bs=1M count=8192 8192+0 records in 8192+0 records out 8589934592 bytes (8.6 GB) copied, 122.256 seconds, 70.3 MB/s real 2m2.460s user 0m0.013s sys 0m17.971s # time dd if=/benchfile of=/dev/null bs=1M 8192+0 records in 8192+0 records out 8589934592 bytes (8.6 GB) copied, 302.452 seconds, 28.4 MB/s real 5m3.100s user 0m0.021s sys 0m40.521s # hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 4520 MB in 2.00 seconds = 2264.99 MB/sec Timing buffered disk reads: 212 MB in 3.03 seconds = 70.03 MB/sec # lspci -v 00:00.0 Host bridge: Intel Corporation 955X Memory Controller Hub Subsystem: Intel Corporation: Unknown device 4b42 Flags: bus master, fast devsel, latency 0 Capabilities: [e0] #09 [2109] 00:01.0 PCI bridge: Intel Corporation 955X PCI Express Graphics Port (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 Memory behind bridge: 90000000-91ffffff Prefetchable memory behind bridge: 0000000080000000-000000008ff00000 Capabilities: [88] #0d [0000] Capabilities: [80] Power Management version 2 Capabilities: [90] Message Signalled Interrupts: 64bit- Queue=0/0 Enable- Capabilities: [a0] #10 [0141] 00:1b.0 Class 0403: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01) Subsystem: Intel Corporation: Unknown device 0013 Flags: bus master, fast devsel, latency 0, IRQ 19 Memory at 92200000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [70] #10 [0091] 00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 01) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 Memory behind bridge: 92300000-923fffff Capabilities: [40] #10 [0141] Capabilities: [80] Message Signalled Interrupts: 64bit- Queue=0/0 Enable- Capabilities: [90] #0d [0000] Capabilities: [a0] Power Management version 2 00:1c.4 PCI bridge: Intel Corporation 82801GR/GH/GHM (ICH7 Family) PCI Express Port 5 (rev 01) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=03, subordinate=03, sec-latency=0 Memory behind bridge: 92400000-924fffff Capabilities: [40] #10 [0141] Capabilities: [80] Message Signalled Interrupts: 64bit- Queue=0/0 Enable- Capabilities: [90] #0d [0000] Capabilities: [a0] Power Management version 2 00:1c.5 PCI bridge: Intel Corporation 82801GR/GH/GHM (ICH7 Family) PCI Express Port 6 (rev 01) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=04, subordinate=04, sec-latency=0 I/O behind bridge: 00002000-00002fff Memory behind bridge: 92100000-921fffff Capabilities: [40] #10 [0141] Capabilities: [80] Message Signalled Interrupts: 64bit- Queue=0/0 Enable- Capabilities: [90] #0d [0000] Capabilities: [a0] Power Management version 2 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #1 (rev 01) (prog-if 00 [UHCI]) Subsystem: Intel Corporation: Unknown device 4b42 Flags: bus master, medium devsel, latency 0, IRQ 21 I/O ports at 3080 [size=32] 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #2 (rev 01) (prog-if 00 [UHCI]) Subsystem: Intel Corporation: Unknown device 4b42 Flags: bus master, medium devsel, latency 0, IRQ 20 I/O ports at 3060 [size=32] 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #3 (rev 01) (prog-if 00 [UHCI]) Subsystem: Intel Corporation: Unknown device 4b42 Flags: bus master, medium devsel, latency 0, IRQ 18 I/O ports at 3040 [size=32] 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #4 (rev 01) (prog-if 00 [UHCI]) Subsystem: Intel Corporation: Unknown device 4b42 Flags: bus master, medium devsel, latency 0, IRQ 16 I/O ports at 3020 [size=32] 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 01) (prog-if 20 [EHCI]) Subsystem: Intel Corporation: Unknown device 4b42 Flags: bus master, medium devsel, latency 0, IRQ 21 Memory at 92204400 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] #0a [20a0] 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1) (prog-if 01 [Subtractive decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=05, subordinate=05, sec-latency=32 I/O behind bridge: 00001000-00001fff Memory behind bridge: 92000000-920fffff Prefetchable memory behind bridge: 0000000092500000-0000000092500000 Capabilities: [50] #0d [0000] 00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01) Subsystem: Intel Corporation: Unknown device 4b42 Flags: bus master, medium devsel, latency 0 Capabilities: [e0] #09 [100c] 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01) (prog-if 8a [Master SecP PriP]) Subsystem: Intel Corporation: Unknown device 4b42 Flags: bus master, medium devsel, latency 0, IRQ 18 I/O ports at <unassigned> I/O ports at <unassigned> I/O ports at <unassigned> I/O ports at <unassigned> I/O ports at 30b0 [size=16] 00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7 Family) Serial ATA Storage Controllers cc=IDE (rev 01) (prog-if 8f [Master SecP SecO PriP PriO]) Subsystem: Intel Corporation: Unknown device 4b42 Flags: bus master, 66Mhz, medium devsel, latency 0, IRQ 20 I/O ports at 30c8 [size=8] I/O ports at 30e4 [size=4] I/O ports at 30c0 [size=8] I/O ports at 30e0 [size=4] I/O ports at 30a0 [size=16] Memory at 92204000 (32-bit, non-prefetchable) [size=1K] Capabilities: [70] Power Management version 2 00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01) Subsystem: Intel Corporation: Unknown device 4b42 Flags: medium devsel, IRQ 9 I/O ports at 3000 [size=32] 01:00.0 VGA compatible controller: nVidia Corporation GeForce 6200 TurboCache(TM) (rev a1) (prog-if 00 [VGA]) Subsystem: nVidia Corporation: Unknown device 025d Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at 91000000 (32-bit, non-prefetchable) [size=16M] Memory at 80000000 (64-bit, prefetchable) [size=256M] Memory at 90000000 (64-bit, non-prefetchable) [size=16M] Capabilities: [60] Power Management version 2 Capabilities: [68] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [78] #10 [0001] 04:00.0 Ethernet controller: Intel Corporation 82573V Gigabit Ethernet Controller (Copper) (rev 03) Subsystem: Intel Corporation: Unknown device 3083 Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at 92100000 (32-bit, non-prefetchable) [size=128K] I/O ports at 2000 [size=32] Capabilities: [c8] Power Management version 2 Capabilities: [d0] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [e0] #10 [0001] 05:00.0 Multimedia audio controller: Creative Labs SB Audigy (rev 04) Subsystem: Creative Labs SB Audigy 2 ZS (SB0350) Flags: bus master, medium devsel, latency 32, IRQ 22 I/O ports at 1100 [size=64] Capabilities: [dc] Power Management version 2 05:00.1 Input device controller: Creative Labs SB Audigy MIDI/Game port (rev 04) Subsystem: Creative Labs SB Audigy MIDI/Game Port Flags: bus master, medium devsel, latency 32 I/O ports at 1180 [size=8] Capabilities: [dc] Power Management version 2 05:00.2 FireWire (IEEE 1394): Creative Labs SB Audigy FireWire Port (rev 04) (prog-if 10 [OHCI]) Subsystem: Creative Labs SB Audigy FireWire Port Flags: bus master, medium devsel, latency 32, IRQ 19 Memory at 92008800 (32-bit, non-prefetchable) [size=2K] Memory at 92004000 (32-bit, non-prefetchable) [size=16K] Capabilities: [44] Power Management version 2 05:01.0 RAID bus controller: Silicon Image, Inc. PCI0680 Ultra ATA-133 Host Controller (rev 02) Subsystem: Silicon Image, Inc. Winic W-680 (Silicon Image 680 based) Flags: bus master, medium devsel, latency 32, IRQ 19 I/O ports at 1178 [size=8] I/O ports at 1194 [size=4] I/O ports at 1170 [size=8] I/O ports at 1190 [size=4] I/O ports at 1150 [size=16] Memory at 92009500 (32-bit, non-prefetchable) [size=256] Expansion ROM at fff80000 [disabled] [size=512K] Capabilities: [60] Power Management version 2 05:02.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10) Subsystem: Realtek Semiconductor Co., Ltd. RT8139 Flags: bus master, medium devsel, latency 32, IRQ 18 I/O ports at 1000 [size=256] Memory at 92009400 (32-bit, non-prefetchable) [size=256] Expansion ROM at 92580000 [disabled] [size=64K] Capabilities: [50] Power Management version 2 05:04.0 FireWire (IEEE 1394): Texas Instruments TSB82AA2 IEEE-1394b Link Layer Controller (rev 01) (prog-if 10 [OHCI]) Subsystem: Intel Corporation: Unknown device 4b42 Flags: bus master, medium devsel, latency 32, IRQ 18 Memory at 92008000 (32-bit, non-prefetchable) [size=2K] Memory at 92000000 (32-bit, non-prefetchable) [size=16K] Capabilities: [44] Power Management version 2 05:05.0 RAID bus controller: Silicon Image, Inc. SiI 3114 [SATALink/SATARaid] Serial ATA Controller (rev 02) Subsystem: Intel Corporation: Unknown device 7114 Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 17 I/O ports at 1168 [size=8] I/O ports at 118c [size=4] I/O ports at 1160 [size=8] I/O ports at 1188 [size=4] I/O ports at 1140 [size=16] Memory at 92009000 (32-bit, non-prefetchable) [size=1K] Expansion ROM at 92500000 [disabled] [size=512K] Capabilities: [60] Power Management version 2 --- regards, Andreas
Attachment:
config-2.6.15.gz
Description: GNU Zip compressed data
Attachment:
config-2.6.16.gz
Description: GNU Zip compressed data
- Follow-Ups:
- Re: Linux 2.6.16 - SATA read performance drop ~50% on Intel 82801GB/GR/GH
- From: Linda Walsh <[email protected]>
- Re: Linux 2.6.16 - SATA read performance drop ~50% on Intel 82801GB/GR/GH
- From: Bill Davidsen <[email protected]>
- Re: Linux 2.6.16 - SATA read performance drop ~50% on Intel 82801GB/GR/GH
- From: Jeff Garzik <[email protected]>
- Re: Linux 2.6.16 - SATA read performance drop ~50% on Intel 82801GB/GR/GH
- Prev by Date: Using remap_pfn_range causes system hang on app close in 2.6.15 & up
- Next by Date: Re: [PATCH] sched: move enough load to balance average load per task
- Previous by thread: Using remap_pfn_range causes system hang on app close in 2.6.15 & up
- Next by thread: Re: Linux 2.6.16 - SATA read performance drop ~50% on Intel 82801GB/GR/GH
- Index(es):