Matthew Dillon <[EMAIL PROTECTED]> writes: > run vmstat -i # vmstat -i interrupt total rate clk 281783 437 atkbd0 4 0 sio0 0 0 fdc0 0 0 ppc0 18 0 acpi0/em0 0 0 uhci0 0 0 uhci1/uhci2/uhci3/twe0/fxp0/atapci1/atapci1 6766087 10506 ata0 12463 19 ata1 0 0 irq19 101 0 swi_siopoll 0 0 swi_crypto/swi_camnet 0 0 swi_cambio 0 0 swi_vm 0 0 swi_taskq 0 0 Total 7060456 10963
Ok I see the interrupt in question. (I don't suppose there is any way to move the USB interrupts to another less used IRQ?) > Monitor your interrupt rate with systat -vm 1 > If the interrupt rate is normal for the workload on the machine, There's a good question. Define "normal". :) I have no idea what normal is, this is a brand new box. Here's a vmstat -i from a production machine that is doing your basic web/email/DNS: # vmstat -i interrupt total rate clk 784643353 281 atkbd0 1 0 sio0 0 0 ppc0 1 0 acpi0/em0 0 0 uhci0 0 0 uhci1/uhci2/uhci3/twe0/fxp0/atapci1/atapci1 75223514 26 ata0 71880 0 ata1 0 0 irq19 96 0 swi_siopoll 0 0 swi_crypto/swi_camnet 0 0 swi_cambio 0 0 swi_vm 0 0 swi_taskq 0 0 Total 859938845 308 The two machines are supposed to be identical, but obviously they aren't. (The last one was bought recently, the previous one in April.) If I do your systat -vm 1, I hardly see a peak interrupt rate on the production machine, but the new machine spikes to 30-40%. Both motherboards are D946GZIS Intel, identical as far as I can tell from the model and packaging. Attached is also a sysctl -a hw. I did a diff between the old and new machines on this: 2c2 < hw.model: Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz --- > hw.model: Intel(R) Core(TM)2 CPU 6420 @ 2.13GHz 5,6c5,6 < hw.physmem: 2062254080 < hw.usermem: 1860755456 --- > hw.physmem: 2061856768 > hw.usermem: 2007019520 53c53 < hw.availpages: 503514 --- > hw.availpages: 503513 55c55 < hw.i8254.timestamp: 00000000 00151b77cbbffe68 --- > hw.i8254.timestamp: 00000000 000002dde46d87d0 Anything else I can probe? ------ Dave Hayes - Consultant - Altadena CA, USA - [EMAIL PROTECTED] >>> The opinions expressed above are entirely my own <<< The universal body of reality is so subtle that you do not hear it when you deliberately listen for it, and you do not see it when you look at it. As for the pure knowledge that has no teacher, how can it be attained by thought or study? new# sysctl -a hw hw.machine: i386 hw.model: Intel(R) Core(TM)2 CPU 6420 @ 2.13GHz hw.ncpu: 1 hw.byteorder: 1234 hw.physmem: 2061856768 hw.usermem: 2007019520 hw.pagesize: 4096 hw.floatingpoint: 1 hw.machine_arch: i386 hw.platform: pc32 hw.aac.iosize_max: 65536 hw.cbb.start_memory: 2281701376 hw.cbb.start_16_io: 256 hw.cbb.start_32_io: 4096 hw.cbb.debug: 0 hw.cardbus.debug: 0 hw.cardbus.cis_debug: 0 hw.an.an_dump: off hw.an.an_cache_mode: dbm hw.an.an_cache_mcastonly: 0 hw.an.an_cache_iponly: 1 hw.ata.mpipe_size: 4 hw.ata.ata_dma: 1 hw.ata.wc: 1 hw.ata.tags: 0 hw.ata.atapi_dma: 0 hw.firewire.try_bmr: 1 hw.firewire.hold_count: 3 hw.firewire.fwmem.eui64_hi: 0 hw.firewire.fwmem.eui64_lo: 0 hw.firewire.fwmem.speed: 2 hw.firewire.fwe.stream_ch: 1 hw.firewire.fwe.tx_speed: 2 hw.firewire.fwe.rx_queue_len: 128 hw.firewire.sbp.auto_login: 1 hw.firewire.sbp.max_speed: -1 hw.firewire.sbp.exclusive_login: 1 hw.firewire.sbp.login_delay: 1000 hw.firewire.sbp.scan_delay: 500 hw.firewire.sbp.tags: 0 hw.fxp_rnr: 0 hw.wi.txerate: 0 hw.wi.debug: 0 hw.rtw.rfprog_fallback: 0 hw.rtw.host_rfio: 0 hw.rtw.chip_reset: 0 hw.xe.debug: 1 hw.pccard.debug: 0 hw.pccard.cis_debug: 0 hw.dc_quick: 1 hw.usb.ugen.bufsize: 16384 hw.instruction_sse: 1 hw.availpages: 503513 hw.i8254.freq: 1193182 hw.i8254.timestamp: 00000000 000002dde46d87d0 hw.pci_disable_bios_route: 0 hw.acpi.supported_sleep_state: S3 S4 S5 hw.acpi.power_button_state: S5 hw.acpi.sleep_button_state: S3 hw.acpi.lid_switch_state: NONE hw.acpi.standby_state: S1 hw.acpi.suspend_state: S3 hw.acpi.sleep_delay: 1 hw.acpi.s4bios: 0 hw.acpi.verbose: 0 hw.acpi.disable_on_poweroff: 0 hw.acpi.reset_video: 1 hw.acpi.cpu.throttle_max: 8 hw.acpi.cpu.throttle_state: 8 hw.acpi.cpu.performance_speed: 8 hw.acpi.cpu.economy_speed: 4 hw.acpi.cpu.cx_supported: C1/0 hw.acpi.cpu.cx_lowest: C1 hw.acpi.cpu.cx_usage: 100.00% hw.twe0.driver_version: 1.40.01.002 hw.em0.debug_info: -1 hw.em0.stats: -1 hw.em0.rx_int_delay: 0 hw.em0.tx_int_delay: 66 hw.em0.rx_abs_int_delay: 66 hw.em0.tx_abs_int_delay: 66 hw.em0.int_throttle_ceil: 10000 hw.fxp0.int_delay: 1000 hw.fxp0.bundle_max: 6 old# systcl -a hw hw.machine: i386 hw.model: Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz hw.ncpu: 1 hw.byteorder: 1234 hw.physmem: 2062254080 hw.usermem: 1860755456 hw.pagesize: 4096 hw.floatingpoint: 1 hw.machine_arch: i386 hw.platform: pc32 hw.aac.iosize_max: 65536 hw.cbb.start_memory: 2281701376 hw.cbb.start_16_io: 256 hw.cbb.start_32_io: 4096 hw.cbb.debug: 0 hw.cardbus.debug: 0 hw.cardbus.cis_debug: 0 hw.an.an_dump: off hw.an.an_cache_mode: dbm hw.an.an_cache_mcastonly: 0 hw.an.an_cache_iponly: 1 hw.ata.mpipe_size: 4 hw.ata.ata_dma: 1 hw.ata.wc: 1 hw.ata.tags: 0 hw.ata.atapi_dma: 0 hw.firewire.try_bmr: 1 hw.firewire.hold_count: 3 hw.firewire.fwmem.eui64_hi: 0 hw.firewire.fwmem.eui64_lo: 0 hw.firewire.fwmem.speed: 2 hw.firewire.fwe.stream_ch: 1 hw.firewire.fwe.tx_speed: 2 hw.firewire.fwe.rx_queue_len: 128 hw.firewire.sbp.auto_login: 1 hw.firewire.sbp.max_speed: -1 hw.firewire.sbp.exclusive_login: 1 hw.firewire.sbp.login_delay: 1000 hw.firewire.sbp.scan_delay: 500 hw.firewire.sbp.tags: 0 hw.fxp_rnr: 0 hw.wi.txerate: 0 hw.wi.debug: 0 hw.rtw.rfprog_fallback: 0 hw.rtw.host_rfio: 0 hw.rtw.chip_reset: 0 hw.xe.debug: 1 hw.pccard.debug: 0 hw.pccard.cis_debug: 0 hw.dc_quick: 1 hw.usb.ugen.bufsize: 16384 hw.instruction_sse: 1 hw.availpages: 503514 hw.i8254.freq: 1193182 hw.i8254.timestamp: 00000000 00151b77cbbffe68 hw.pci_disable_bios_route: 0 hw.acpi.supported_sleep_state: S3 S4 S5 hw.acpi.power_button_state: S5 hw.acpi.sleep_button_state: S3 hw.acpi.lid_switch_state: NONE hw.acpi.standby_state: S1 hw.acpi.suspend_state: S3 hw.acpi.sleep_delay: 1 hw.acpi.s4bios: 0 hw.acpi.verbose: 0 hw.acpi.disable_on_poweroff: 0 hw.acpi.reset_video: 1 hw.acpi.cpu.throttle_max: 8 hw.acpi.cpu.throttle_state: 8 hw.acpi.cpu.performance_speed: 8 hw.acpi.cpu.economy_speed: 4 hw.acpi.cpu.cx_supported: C1/0 hw.acpi.cpu.cx_lowest: C1 hw.acpi.cpu.cx_usage: 100.00% hw.twe0.driver_version: 1.40.01.002 hw.em0.debug_info: -1 hw.em0.stats: -1 hw.em0.rx_int_delay: 0 hw.em0.tx_int_delay: 66 hw.em0.rx_abs_int_delay: 66 hw.em0.tx_abs_int_delay: 66 hw.em0.int_throttle_ceil: 10000 hw.fxp0.int_delay: 1000 hw.fxp0.bundle_max: 6
