Messages in this thread | | | Date | Sun, 28 Mar 2010 20:44:30 -0700 | Subject | 100%wa for long periods of time | From | Mark Knecht <> |
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Hi all, Long time lurker. Seldom post here. I'm not a programmer.
OK, so I'm bring up new hardware - Intel i7 920, Intel DX58SO motherboard, 6GB Crucial triple channel DRAM. Using both the Gentoo install CD (2.6.32 based) as well as 2.6.33-gentoo after booting the install I am running into long periods of time - sometimes 30 seconds, sometimes lasting minutes, where the machine appears to hang or slow down very drastically. The only thing I've noticed so far is that there are 100% waiting periods showing up in top. No messages in dmesg or /var/log/messages. Just long periods where the the compiler acts like the system has really slowed down and sometimes appears almost completely dead.
When this clears up then the system screams along building software. When it happens is see things like the following where CPU's 1 & 5 sit at 100% waiting which lasted 2 or 3 minutes before clearing up. The CPU that goes to 100% does move around but it does seem to land on #5 more than others.
keeper ~ # top
top - 02:27:17 up 28 min, 2 users, load average: 2.76, 1.95, 1.30 Tasks: 125 total, 1 running, 124 sleeping, 0 stopped, 0 zombie Cpu0 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 0.0%us, 0.0%sy, 0.0%ni, 0.0%id,100.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu2 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu3 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu4 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu5 : 0.0%us, 0.3%sy, 0.0%ni, 0.0%id, 99.7%wa, 0.0%hi, 0.0%si, 0.0%st Cpu6 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu7 : 0.0%us, 0.3%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 6107024k total, 1448676k used, 4658348k free, 187492k buffers Swap: 4200988k total, 0k used, 4200988k free, 915900k cached
keeper ~ # lspci 00:00.0 Host bridge: Intel Corporation X58 I/O Hub to ESI Port (rev 13) 00:01.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 1 (rev 13) 00:03.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 3 (rev 13) 00:07.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 7 (rev 13) 00:10.0 PIC: Intel Corporation 5520/5500/X58 Physical and Link Layer Registers Port 0 (rev 13) 00:10.1 PIC: Intel Corporation 5520/5500/X58 Routing and Protocol Layer Registers Port 0 (rev 13) 00:14.0 PIC: Intel Corporation 5520/5500/X58 I/O Hub System Management Registers (rev 13) 00:14.1 PIC: Intel Corporation 5520/5500/X58 I/O Hub GPIO and Scratch Pad Registers (rev 13) 00:14.2 PIC: Intel Corporation 5520/5500/X58 I/O Hub Control Status and RAS Registers (rev 13) 00:14.3 PIC: Intel Corporation 5520/5500/X58 I/O Hub Throttle Registers (rev 13) 00:19.0 Ethernet controller: Intel Corporation 82567LM-2 Gigabit Network Connection 00:1a.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #4 00:1a.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #5 00:1a.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #6 00:1a.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #2 00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller 00:1c.0 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 1 00:1c.1 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 2 00:1c.4 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 5 00:1d.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #1 00:1d.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #2 00:1d.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #3 00:1d.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #1 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 90) 00:1f.0 ISA bridge: Intel Corporation 82801JIR (ICH10R) LPC Interface Controller 00:1f.2 SATA controller: Intel Corporation 82801JI (ICH10 Family) SATA AHCI Controller 00:1f.3 SMBus: Intel Corporation 82801JI (ICH10 Family) SMBus Controller 02:00.0 VGA compatible controller: nVidia Corporation G96 [GeForce 9500 GT] (rev a1) 06:00.0 IDE interface: Marvell Technology Group Ltd. 88SE6121 SATA II Controller (rev b2) 07:03.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link) keeper ~ #
keeper ~ # uname -a Linux keeper 2.6.33-gentoo #1 SMP PREEMPT Mon Mar 29 01:12:08 PDT 2010 x86_64 Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz GenuineIntel GNU/Linux keeper ~ #
keeper ~ # lsmod Module Size Used by ipv6 207757 24 usbhid 21529 0 snd_hda_codec_realtek 239530 1 uhci_hcd 18047 0 ehci_hcd 30854 0 usbcore 115023 4 usbhid,uhci_hcd,ehci_hcd sg 23029 0 snd_hda_intel 17688 0 snd_hda_codec 45755 2 snd_hda_codec_realtek,snd_hda_intel firewire_ohci 20022 0 e1000e 111701 0 snd_pcm 58104 2 snd_hda_intel,snd_hda_codec processor 23121 0 rtc_cmos 7678 0 snd_timer 15030 1 snd_pcm rtc_core 11093 1 rtc_cmos snd 37476 5 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_pcm,snd_timer soundcore 800 1 snd snd_page_alloc 5809 2 snd_hda_intel,snd_pcm firewire_core 36109 1 firewire_ohci rtc_lib 1617 1 rtc_core thermal 11650 0 keeper ~ #
Thanks, Mark [unhandled content-type:application/x-gzip] | |