Date: Tue, 24 Dec 2002 10:29:44 -0800 From: Yu-Shun Wang <yushunwa@ISI.EDU> To: Marcel Moolenaar <marcel@xcllnt.net> Cc: current@FreeBSD.org Subject: Re: mpt(4): berserk interrupt frequency Message-ID: <3E08A798.6080400@isi.edu> In-Reply-To: <20021224004748.GA1134@athlon.pn.xcllnt.net> References: <20021224004748.GA1134@athlon.pn.xcllnt.net>
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Hi,
Can't comment on the reasons for your case, but that number was
definitely strange. Here's ours:
================================================
abc% vmstat -i
interrupt total rate
mpt0 irq18 16 0
em0 irq19 380870 6
fwohci0 irq17 2 0
pcm0 irq21 1 0
em1 irq2 1 0
ata0 irq14 17 0
ata1 irq15 20 0
uhci0 irq2 724716 12
uhci1 irq16 7 0
fdc0 irq6 4 0
atkbd0 irq1 2 0
clk irq0 5726962 100
rtc irq8 7330322 128
Total 14162940 247
================================================
Same dmesg output, just for your reference:
cam: using minimum scsi_delay (100ms)
Copyright (c) 1992-2002 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 5.0-CURRENT #0: Mon Dec 23 14:32:01 PST 2002
root@tnn.isi.edu:/usr/obj/usr/src/sys/KERNEL-1.12
Preloaded elf kernel "/boot/kernel/kernel" at 0xc06f1000.
.
.
Timecounter "i8254" frequency 1193133 Hz
CPU: Pentium 4 (2372.82-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0xf24 Stepping = 4
Features=0x3febfbff<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>
.
.
mpt0: <LSILogic 1030 Ultra4 Adapter> port 0xdc00-0xdcff mem
0xff6a0000-0xff6bffff,0xff6c0000-0xff6dffff irq 18 at device 12.0 on pci3
mpt0: IOCFACTS: GlobalCredits=222 Flags=0 Request Frame Size 24 FWsize 57164
mpt1: <LSILogic 1030 Ultra4 Adapter> port 0xd800-0xd8ff mem
0xff660000-0xff67ffff,0xff680000-0xff69ffff irq 19 at device 12.1 on pci3
mpt1: IOCFACTS: GlobalCredits=222 Flags=0 Request Frame Size 24 FWsize 57164
.
.
yushun.
Marcel Moolenaar wrote:
> Hi,
>
> Can someone who has a mpt(4) device tell me if their interrupt frequency
> is as absurd as mine is?
>
> \begin{verbatim}
> mckinley% vmstat -i
> interrupt total rate
> clock 272238 1019
> ohci1 1 0
> fxp0 347 1
> atapci0 4 0
> mpt0 8286623314361713943 31036042375886569
> mpt1 2314885530819653497 8669983261496829
> bge0 2105376 7885
> Total 10601508845183745406 39706025637392304
> \end{verbatim}
>
> I want to know if this is something specific to ia64 or if it's
> more commonly seen. Some dmesg(8) output:
>
> \begin{verbatim}
> Copyright (c) 1992-2002 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 5.0-CURRENT #261: Mon Dec 23 16:20:39 PST 2002
> marcel@itanium.pn.xcllnt.net:/nfs/p4/ia64/sys/ia64/compile/HP_RX2600
> Preloaded elf kernel "/boot/kernel/kernel" at 0xe000000000b8a000.
> :
> pcib1: on acpi0
> pci32: on pcib1
> mpt0: port 0x2100-0x21ff mem 0x90830000-0x9083ffff,0x90840000-0x9084ffff irq
> 27 at device 1.0 on pci32
> mpt1: port 0x2000-0x20ff mem 0x90810000-0x9081ffff,0x90820000-0x9082ffff irq
> 28 at device 1.1 on pci32
> bge0: mem 0x90800000-0x9080ffff irq 29 at device 2.0 on pci32
> :
> \end{varbatim}
>
> No interrupt sharing. The following snippet is the result of filtering
> dmesg(8) with grep(1) on irq:
>
> \begin{verbatim}
> ohci0: mem 0x80023000-0x80023fff irq 16 at device 1.0 on pci0
> ohci1: mem 0x80022000-0x80022fff irq 17 at device 1.1 on pci0
> atapci0: port 0xd40-0xd4f,0xd60-0xd63,0xd50-0xd57,0xd64-0xd67,0xd58-0xd5f irq
> 21 at device 2.0 on pci0
> fxp0: port 0xd00-0xd3f mem 0x80000000-0x8001ffff,0x80020000-0x80020fff irq 20
> at device 3.0 on pci0
> mpt0: port 0x2100-0x21ff mem 0x90830000-0x9083ffff,0x90840000-0x9084ffff irq
> 27 at device 1.0 on pci32
> mpt1: port 0x2000-0x20ff mem 0x90810000-0x9081ffff,0x90820000-0x9082ffff irq
> 28 at device 1.1 on pci32
> bge0: mem 0x90800000-0x9080ffff irq 29 at device 2.0 on pci32
> sio0 iomem 0xff5e0000-0xff5e0007 irq 34 on acpi0
> sio1 iomem 0xff5e2000-0xff5e2007 irq 35 on acpi0
> sio2: mem 0xf8030000-0xf8030fff irq 82 at device 1.1 on pci224
> \end{verbatim}
>
> Thanks,
>
--
____________________________________________________________________________
Yu-Shun Wang <yushunwa@isi.edu> Information Sciences Institute
University of Southern California
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