From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Alex Moskalenko Organization: STC Electron-Service To: hardware@altlinux.ru Date: Thu, 4 Aug 2005 10:05:32 +0400 User-Agent: KMail/1.8.1 MIME-Version: 1.0 Content-Type: text/plain; charset="koi8-r" Content-Transfer-Encoding: 8bit Content-Disposition: inline Message-Id: <200508041005.32618.mav@elserv.msk.su> X-Spam-Score: -102.5 (---------------------------------------------------) X-Spam-Report: Spam detection software, running on the system "trishka.elserv.msk.su", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or block similar future email. If you have any questions, see the administrator of that system for details. Content analysis details: (-102.5 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -100 USER_IN_WHITELIST From: address is in the user's white-list 0.4 SUBJ_ALL_CAPS Subject is all capitals -2.8 ALL_TRUSTED Did not pass through any untrusted hosts Subject: [Hardware] DAC960 - " =?koi8-r?b?2sHNydLBzsnF?= " =?koi8-r?b?08nT1MXN2SDQ0skg2sHQydPJ?= X-BeenThere: hardware@altlinux.ru X-Mailman-Version: 2.1.5 Precedence: list Reply-To: hardware@altlinux.ru List-Id: ALT Linux hardware support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Aug 2005 06:05:35 -0000 Archived-At: List-Archive: Здравствуйте! Столкнулся со следующей проблемой. При записи больших объемов данных система полностью замирает на 10-60 секунд. Не работают top, ps, отваливаются соединения samba. При этом успел заметить, что происходит это при активизации процесса bdflush. Ситуацию удается более-менее сгладить командой update -1 96 -5 120, т.е. уменьшая количество одновременно сбрасываемых блоков на диски и уменьшая время возможного присутствия этих блоков в кэше. Полностью проблему это не решает, так как похоже на время операций ввода-вывода с контроллером система блокируется, что очень сильно отражается на обмене с сетью. Кто-нибудь сталкивался с подобной проблемой? Куда можно копать? Железо: #lspci -v 00:00.0 Host bridge: Intel Corp. 82845 845 (Brookdale) Chipset Host Bridge (rev 03) Subsystem: Intel Corp. 82845 845 (Brookdale) Chipset Host Bridge Flags: bus master, fast devsel, latency 0 Memory at d8000000 (32-bit, prefetchable) [size=64M] Capabilities: [e4] #09 [0104] Capabilities: [a0] AGP version 2.0 00:01.0 PCI bridge: Intel Corp. 82845 845 (Brookdale) Chipset AGP Bridge (rev 03) (prog-if 00 [Normal decode]) Flags: bus master, 66Mhz, fast devsel, latency 64 Bus: primary=00, secondary=01, subordinate=01, sec-latency=32 Memory behind bridge: e0000000-e1ffffff Prefetchable memory behind bridge: d0000000-d7ffffff 00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB/EB/ER Hub interface to PCI Bridge (rev 12) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=02, subordinate=02, sec-latency=32 I/O behind bridge: 0000c000-0000cfff Memory behind bridge: de000000-dfffffff Prefetchable memory behind bridge: dc000000-ddffffff 00:1f.0 ISA bridge: Intel Corp. 82801BA ISA Bridge (LPC) (rev 12) Flags: bus master, medium devsel, latency 0 00:1f.1 IDE interface: Intel Corp. 82801BA IDE U100 (rev 12) (prog-if 80 [Master]) Subsystem: Intel Corp.: Unknown device 2442 Flags: bus master, medium devsel, latency 0 I/O ports at f000 [size=16] 00:1f.2 USB Controller: Intel Corp. 82801BA/BAM USB (Hub #1) (rev 12) (prog-if 00 [UHCI]) Subsystem: Intel Corp. 82801BA/BAM USB (Hub #1) Flags: bus master, medium devsel, latency 0, IRQ 19 I/O ports at d000 [size=32] 00:1f.3 SMBus: Intel Corp. 82801BA/BAM SMBus (rev 12) Subsystem: Intel Corp.: Unknown device 2442 Flags: medium devsel, IRQ 17 I/O ports at 5000 [size=16] 00:1f.4 USB Controller: Intel Corp. 82801BA/BAM USB (Hub #2) (rev 12) (prog-if 00 [UHCI]) Subsystem: Intel Corp.: Unknown device 2442 Flags: bus master, medium devsel, latency 0, IRQ 23 I/O ports at d800 [size=32] 00:1f.5 Multimedia audio controller: Intel Corp. 82801BA/BAM AC'97 Audio (rev 12) Subsystem: Unknown device 414c:4710 Flags: bus master, medium devsel, latency 0, IRQ 17 I/O ports at dc00 [size=256] I/O ports at e000 [size=64] 01:00.0 VGA compatible controller: S3 Inc. Savage 4 (rev 04) (prog-if 00 [VGA]) Subsystem: S3 Inc. 86C394-397 Savage4 Flags: bus master, 66Mhz, medium devsel, latency 248, IRQ 16 Memory at e1000000 (32-bit, non-prefetchable) [size=512K] Memory at d0000000 (32-bit, prefetchable) [size=128M] Expansion ROM at [disabled] [size=64K] Capabilities: [dc] Power Management version 1 Capabilities: [80] AGP version 2.0 02:01.0 Ethernet controller: D-Link System Inc Gigabit Ethernet Adapter (rev 11) Subsystem: D-Link System Inc Gigabit Ethernet Adapter Flags: bus master, 66Mhz, medium devsel, latency 32, IRQ 21 Memory at df000000 (32-bit, non-prefetchable) [size=16K] I/O ports at c000 [size=256] Expansion ROM at [disabled] [size=128K] Capabilities: [48] Power Management version 2 Capabilities: [50] Vital Product Data 02:04.0 RAID bus controller: Mylex Corporation AcceleRAID 352/170/160 support Device (rev 02) Subsystem: Mylex Corporation: Unknown device 0052 Flags: bus master, medium devsel, latency 32, IRQ 18 Memory at dc000000 (32-bit, prefetchable) [size=32M] Expansion ROM at [disabled] [size=32K] Capabilities: [80] Power Management version 2 #cat /proc/interrupts CPU0 0: 7100593 IO-APIC-edge timer 1: 2465 IO-APIC-edge keyboard 8: 2 IO-APIC-edge rtc 9: 0 IO-APIC-level acpi 12: 37 IO-APIC-edge PS/2 Mouse 14: 57 IO-APIC-edge ide0 18: 199537 IO-APIC-level Mylex AcceleRAID 170 19: 0 IO-APIC-level usb-uhci 21: 28155158 IO-APIC-level SysKonnect SK-98xx 23: 0 IO-APIC-level usb-uhci NMI: 0 LOC: 7100618 ERR: 0 MIS: 0 #cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 0 model name : Intel(R) Pentium(R) 4 CPU 1300MHz stepping : 7 cpu MHz : 1300.056 cache size : 256 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : 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 ht tm bogomips : 2595.22 #cat /proc/rd/c0/current_status ***** DAC960 RAID Driver Version 2.4.11 of 11 October 2001 ***** Copyright 1998-2001 by Leonard N. Zubkoff Configuring Mylex AcceleRAID 170 PCI RAID Controller Firmware Version: 7.02-00, Channels: 1, Memory Size: 32MB PCI Bus: 2, Device: 4, Function: 0, I/O Address: Unassigned PCI Address: 0xDC000000 mapped at 0xF8A0C000, IRQ Channel: 18 Controller Queue Depth: 512, Maximum Blocks per Command: 2048 Driver Queue Depth: 511, Scatter/Gather Limit: 128 of 257 Segments Physical Devices: 0:0 Vendor: QUANTUM Model: ATLAS_V_36_WLS Revision: 0230 Wide Synchronous at 160 MB/sec Serial Number: 143109651315 Disk Status: Online, 71688192 blocks 0:1 Vendor: QUANTUM Model: ATLAS_V_36_WLS Revision: 0230 Wide Synchronous at 160 MB/sec Serial Number: 143110652586 Disk Status: Online, 71688192 blocks 0:2 Vendor: QUANTUM Model: ATLAS_V_36_WLS Revision: 0230 Wide Synchronous at 160 MB/sec Serial Number: 143110652703 Disk Status: Online, 71688192 blocks 0:7 Vendor: MYLEX Model: AcceleRAID 170 Revision: 0702 Wide Synchronous at 160 MB/sec Serial Number: Logical Drives: /dev/rd/c0d0: RAID-5, Online, 143376384 blocks Logical Device Initialized, BIOS Geometry: 255/63 Stripe Size: 64KB, Segment Size: 64KB Read Cache Disabled, Write Cache Disabled No Rebuild or Consistency Check in Progress Софт #mount /dev/rd/c0d0p1 on / type ext3 (rw) proc on /proc type proc (rw,gid=19) devpts on /dev/pts type devpts (rw,gid=5,mode=0620) /dev/rd/c0d0p3 on /mnt/shared type xfs (rw) /dev/hdb on /mnt/cdrom type subfs (ro,noexec,nosuid,nodev,fs=cdfss,kudzu) /dev/fd0 on /mnt/floppy type subfs (rw,noexec,nosuid,nodev,sync,fs=floppyfss,kudzu) usbfs on /proc/bus/usb type usbfs (rw) #uname -a Linux bdc.main.elserv.ru 2.4.26-std-up-alt12 #1 Thu May 12 14:53:58 MSD 2005 i686 unknown unknown GNU/Linux #cat /etc/altlinux-release ALT Linux Master 2.4 (Citron) Запись и чтение тестируются на разделе /dev/rd/c0d0p3 Включение на контроллере политики кэша Write Back (Становится Write Cache Enabled) проблемы не решает. -- WBR, Alex Moskalenko