Low HDD tranfer rate with FreeBSD 5.3-Release

[Mike Tancsa]

On Mon, 09 May 2005 11:26:39 -0700, in sentex.lists.freebsd.hackers
you wrote:

>Hi Eric,
>
>
>Shouldnt it be around 54MB/s for a regular  IDE drive.


As I did a 
[releng5-865]# dd if=/dev/zero of=/tmp/test bs=8192 count=30000
30000+0 records in
30000+0 records out
245760000 bytes transferred in 4.447737 secs (55255063 bytes/sec)
[releng5-865]# 
5.4-STABLE FreeBSD 5.4-STABLE #1: Sat May  7 20:42:37 EDT 2005 

And, after flushing the cache by rebooting,
[releng5-865]# dd if=/tmp/test of=/dev/null bs=8192
30000+0 records in
30000+0 records out
245760000 bytes transferred in 4.517612 secs (54400422 bytes/sec)
[releng5-865]# 

run of the mill PATA segate
ad0: 38166MB <ST340014A/3.06> [77545/16/63] at ata0-master UDMA100


You really should update to 5.4R

[releng5-865]# dmesg | head -13
Copyright (c) 1992-2005 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993,
1994
        The Regents of the University of California. All rights
reserved.
FreeBSD 5.4-STABLE #1: Sat May  7 20:42:37 EDT 2005
    mdtancsa at releng5-865.sentex.ca:/usr/obj/usr/src/sys/pioneer
ACPI APIC Table: <AOpen  AWRDACPI>
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Celeron(R) CPU 2.40GHz (2400.41-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0xf33  Stepping = 3

Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
real memory  = 267321344 (254 MB)
avail memory = 251940864 (240 MB)
ioapic0 <Version 2.0> irqs 0-23 on motherboard
...
atapci0: <Intel ICH5 UDMA100 controller> port
0xf000-0xf00f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on
pci0

[releng5-865]# 

	---Mike



--------------------------------------------------------
Mike Tancsa, Sentex communications http://www.sentex.net
Providing Internet Access since 1994
mike at sentex.net, (http://www.tancsa.com)