Re: FreeBSD 5.3b7and poor ata performance

Tommi Lätti said:

> Claudiu Dragalina-Paraipan wrote:
>> This might be a bit away from the main interest of the thread:
>> anyone has done any test in 5.2.1 ?
>
> well, here's one from a production machine. There were disk writes
> during the test, so one can assume it performs even better on idle
> machine:
>
> # atacontrol list
> ATA channel 1:
>      Master:  ad2 <MAXTOR 6L040J2/A93.0500> ATA/ATAPI rev 5
>      Slave:       no device present
>
> # dd if=/dev/ad2 of=/dev/null bs=1024k count=1024
> 1024+0 records in
> 1024+0 records out
> 1073741824 bytes transferred in 25.935189 secs (41400964 bytes/sec)
>
> The hard-drive is an old 40G Maxtor. Propably 7200RPM.

For measure, here are some results from my machine:

CPU: AMD Athlon(tm) Processor (1410.21-MHz 686-class CPU)
acpi0: <ASUS A7V-133> on motherboard

atapci0: <VIA 82C686B UDMA100 controller> port
0xb800-0xb80f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 4.1 on pci0
ata0: channel #0 on atapci0
ata1: channel #1 on atapci0

atapci1: <Promise PDC20265 UDMA100 controller> port
0x7000-0x703f,0x7400-0x7403,0x7800-0x7807,0x8000-0x8003,0x8400-0x8407 mem
0xe1000000-0xe101ffff irq 10 at device 17.0 on pci0
ata2: channel #0 on atapci1
ata3: channel #1 on atapci1

ad0: 78167MB <Maxtor 6Y080P0/YAR41BW0> [158816/16/63] at ata0-master UDMA100
ad2: 156334MB <Maxtor 4G160J8/GAK819K0> [317632/16/63] at ata1-master UDMA100
ad4: 239372MB <Maxtor 7Y250P0/YAR41BW0> [486344/16/63] at ata2-master UDMA100
ad6: 76345MB <MAXTOR 6L080L4/A93.0500> [155114/16/63] at ata3-master UDMA100

FreeBSD fbsd.wettoast.net 6.0-CURRENT FreeBSD 6.0-CURRENT #0: Mon Oct 18
22:57:00 EDT 2004     root_at_fbsd.wettoast.net:/usr/obj/usr/src/sys/DP  i386

root_at_fbsd:~# atacontrol list
ATA channel 0:
    Master:  ad0 <Maxtor 6Y080P0/YAR41BW0> ATA/ATAPI revision 7
    Slave:       no device present
ATA channel 1:
    Master:  ad2 <Maxtor 4G160J8/GAK819K0> ATA/ATAPI revision 6
    Slave:       no device present
ATA channel 2:
    Master:  ad4 <Maxtor 7Y250P0/YAR41BW0> ATA/ATAPI revision 7
    Slave:       no device present
ATA channel 3:
    Master:  ad6 <MAXTOR 6L080L4/A93.0500> ATA/ATAPI revision 5
    Slave:       no device present


root_at_fbsd:~# dd if=/dev/ad0 of=/dev/null bs=1024k count=1024
1024+0 records in
1024+0 records out
1073741824 bytes transferred in 18.255028 secs (58818963 bytes/sec)

root_at_fbsd:~# dd if=/dev/ad2 of=/dev/null bs=1024k count=1024
1024+0 records in
1024+0 records out
1073741824 bytes transferred in 29.462440 secs (36444430 bytes/sec)

root_at_fbsd:~# dd if=/dev/ad4 of=/dev/null bs=1024k count=1024
1024+0 records in
1024+0 records out
1073741824 bytes transferred in 58.360182 secs (18398535 bytes/sec)

root_at_fbsd:~# dd if=/dev/ad6 of=/dev/null bs=1024k count=1024
1024+0 records in
1024+0 records out
1073741824 bytes transferred in 41.407983 secs (25930793 bytes/sec)