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SubjectRe: 2.5.69, IDE TCQ can't be enabled

This is the last time I got TAG running clean!
Proof you have zero gain on writes and huge gains on reads.

Still it is a lame protocol.

On Tue, 13 May 2003, Jeff Garzik wrote:

> On Tue, May 13, 2003 at 08:13:37PM +0200, Jens Axboe wrote:
> > btw, you may want to see the IDE_TCQ_FIDDLE_SI define in ide-tcq, here's
> > the comment I put there:
> >
> > /*
> > * we are leaving the SERVICE interrupt alone, IBM drives have it
> > * on per default and it can't be turned off. Doesn't matter, this
> > * is the sane config.
> > */
> > #undef IDE_TCQ_FIDDLE_SI
> >
> > Are you sure this isn't what you are seeing?
> My information comes solely from IDENTIFY DEVICE...
> Jeff
> -
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Andre Hedrick
LAD Storage Consulting Group
Linux version 2.3.99-pre9-tag ( (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #1 Fri Apr 26 18:35:40 PDT 2002
BIOS-provided physical RAM map:
e820: 000000000009fc00 @ 0000000000000000 (usable)
e820: 0000000000000400 @ 000000000009fc00 (reserved)
e820: 0000000000010000 @ 00000000000f0000 (reserved)
e820: 0000000000001000 @ 00000000fec00000 (reserved)
e820: 0000000000001000 @ 00000000fee00000 (reserved)
e820: 0000000000010000 @ 00000000ffff0000 (reserved)
e820: 000000003fef0000 @ 0000000000100000 (usable)
e820: 000000000000d000 @ 000000003fff3000 (ACPI data)
e820: 0000000000003000 @ 000000003fff0000 (ACPI NVS)
Warning only 896MB will be used.
Use a HIGHMEM enabled kernel.
On node 0 totalpages: 229376
zone(0): 4096 pages.
zone(1): 225280 pages.
zone(2): 0 pages.
Initializing CPU#0
Detected 997472345 Hz processor.
ide_setup: idebus=33
Console: colour VGA+ 80x25
Calibrating delay loop... 1985.74 BogoMIPS
Memory: 898668k/917504k available (1469k kernel code, 18448k reserved, 99k data, 196k init, 0k highmem)
Dentry-cache hash table entries: 131072 (order: 8, 1048576 bytes)
Buffer-cache hash table entries: 65536 (order: 6, 262144 bytes)
Page-cache hash table entries: 262144 (order: 8, 1048576 bytes)
kmem_create: Poisoning requested, but con given - bdev_cache
Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
kmem_create: Poisoning requested, but con given - inode_cache
VFS: Diskquotas version dquot_6.4.0 initialized
CPU: L1 I Cache: 64K L1 D Cache: 64K
CPU: L2 Cache: 256K
CPU: AMD AMD Athlon(tm) Processor stepping 01
Checking 386/387 coupling... OK, FPU using exception 16 error reporting.
Checking 'hlt' instruction... OK.
AMD K6 stepping B detected - <6>K6 BUG 20033685 20000000 (Report these if test report is incorrect)
AMD K6 stepping B detected - system stability may be impaired when more than 32 MB are used.
Please see
POSIX conformance testing by UNIFIX
mtrr: v1.36 (20000221) Richard Gooch (
PCI: PCI BIOS revision 2.10 entry at 0xfb460, last bus=2
PCI: Using configuration type 1
PCI: Probing PCI hardware
PCI: Using IRQ router default [1022/7443] at 00:07.0
isapnp: Scanning for Pnp cards...
isapnp: No Plug & Play device found
Linux NET4.0 for Linux 2.3
Based upon Swansea University Computer Society NET3.039
kmem_create: Poisoning requested, but con given - skbuff_head_cache
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 8192 buckets, 64Kbytes
TCP: Hash tables configured (established 65536 bind 65536)
Linux IP multicast router 0.06 plus PIM-SM
NET4: AppleTalk 0.18 for Linux NET4.0
Initializing RT netlink socket
Starting kswapd v1.6
pty: 256 Unix98 ptys configured
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
Uniform Multi-Platform E-IDE driver Revision: 6.30
ide: Assuming 33MHz system bus speed for PIO modes
AMD7441: IDE controller on PCI bus 00 dev 39
AMD7441: chipset revision 3
AMD7441: not 100% native mode: will probe irqs later
AMD7441: disabling single-word DMA support (revision < C4)
ide0: BM-DMA at 0xb000-0xb007, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xb008-0xb00f, BIOS settings: hdc:DMA, hdd:pio
hda: IBM-DTLA-307075, ATA DISK drive
hdc: LTN242, ATAPI CDROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: 150136560 sectors (76870 MB) w/1916KiB Cache, CHS=9345/255/63, UDMA(100)
hda: Queued DMA enabled
Release interrupt enabled

hdc: ATAPI 24X CD-ROM drive, 120kB Cache, DMA
Uniform CD-ROM driver Revision: 3.08
Partition check:
p1 p2 p3 < p5 p6 p7 p8 p9 p10 >
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
LVM version 0.8final by Heinz Mauelshagen (15/02/2000)
lvm -- Driver successfully initialized
id: 0xff io: 0x300 <7> id: 0xff io: 0x210 <7> id: 0xff io: 0x240 <7> id: 0xff io: 0x280 <7> id: 0xff io: 0x2c0 <7> id: 0xff io: 0x200 <7> id: 0xff io: 0x320 <7> id: 0xff io: 0x340 <7> id: 0xff io: 0x360 <5>RAMDISK: Compressed image found at block 0
Freeing initrd memory: 261k freed
Serial driver version 4.93 (2000-03-20) with MANY_PORTS MULTIPORT SHARE_IRQ SERIAL_PCI ISAPNP enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
Real Time Clock Driver v1.10c
Non-volatile memory driver v1.0
Linux Tulip driver version (Apr 14, 2000)
eth0: Lite-On 82c168 PNIC rev 33 at 0xa000, 00:A0:CC:3F:CA:F8, IRQ 10.
eth0: MII transceiver #1 config 1000 status 782d advertising 01e1.
ip_conntrack (7168 buckets, 57344 max)
ip_tables: (c)2000 Netfilter core team
devfs: v0.96 (20000430) Richard Gooch (
devfs: boot_options: 0x2
VFS: Mounted root (ext2 filesystem).
Freeing unused kernel memory: 196k freed
NET4: Linux IPX 0.38 for NET4.0
IPX Portions Copyright (c) 1995 Caldera, Inc.

File './Bonnie.1223', size: 1073741824, volumes: 1
Writing with putc()... done: 10958 kB/s 81.0 %CPU
Rewriting... done: 8927 kB/s 11.0 %CPU
Writing intelligently...done: 19755 kB/s 12.4 %CPU
Reading with getc()... done: 10588 kB/s 82.5 %CPU
Reading intelligently...done: 66170 kB/s 38.1 %CPU
Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done...
---Sequential Output (nosync)--- ---Sequential Input-- --Rnd Seek-
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --04k (03)-
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
1*1024 10958 81.0 19755 12.4 8927 11.0 10588 82.5 66170 38.1 345.7 0.0

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