Date: Fri, 25 Apr 2003 09:24:46 +0200 (CEST) From: Soeren Schmidt <sos@spider.deepcore.dk> To: jeev <jeev@boldinternet.net> Cc: freebsd-smp@FreeBSD.ORG Subject: Re: Dual 2.40ghz xeon w/hyperthreading Message-ID: <200304250724.h3P7Oket016366@spider.deepcore.dk> In-Reply-To: <000301c30afa$3dbd3e20$0200a8c0@mainframe>
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It seems jeev wrote: > Basically guys, this box is not exceeding an ide computer I have on idea. > > I noticed the dual xeon to be slow. So I ran: > > dd if=/dev/urandom of=/dev/null bs=1m count=1024 > > on 2 servers, 1 is the top one and 1 is the xeon. > Obviously the ide killed the scsi with dual cpu's running hyperthreading, > why? > > > -SINGLE 2.4ghz p4 w/1gb ram and 80gig ide > > 1073741824 bytes transferred in 266.387823 secs (4030747 bytes/sec) > 2.4ghz > CPU: Intel(R) Pentium(R) 4 CPU 2.40GHz (2399.74-MHz 686-class CPU) > Origin = "GenuineIntel" Id = 0xf27 Stepping = 7 > > Features=0xbfebf9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV > ,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> > real memory = 1073676288 (1048512K bytes) > avail memory = 1039519744 (1015156K bytes) > ad0: 76319MB <WDC WD800JB-00DUA1> [155061/16/63] at ata0-master UDMA100 Hmm something is strange here on a semilar system: CPU: Intel(R) Pentium(R) 4 CPU 2.40GHz (2399.74-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0xf27 Stepping = 7 Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,C MOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> real memory = 1073725440 (1023 MB) avail memory = 1037553664 (989 MB) Running FreeBSD 5.0-CURRENT #0: Thu Apr 24 15:36:12 CEST 2003 sos@devel.deepcore.dk:/develop/ata-ng/sys/i386/compile/DEVEL I get this: devel> dd if=/dev/urandom of=/dev/null bs=1m count=1024 1024+0 records in 1024+0 records out 1073741824 bytes transferred in 56.858569 secs (18884433 bytes/sec) devel> -Søren
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