Hardware
Centos 7 在大工作量上凍結
我最近將我的伺服器升級到 Centos 7；我要求使用者在那裡備份數據以進行升級。升級後，一些使用者嘗試解壓縮備份 tar (~300Gb)，這導致伺服器掛起/凍結。（不響應鍵盤/ssh 輸入）（可重現）這也發生在其他佔用大量資源的二進製文件中。
我監控了記憶體和 CPU，在凍結之前兩者都是合理的，所以Centos 板上的結論是它是 I/0 限制。這似乎是正確的，因為解決方法
nice成功完成了 untar。我的問題是，我怎麼能確定這不會在未來再次發生？（我可以限制 I/0 嗎？）這是一台“離線”機器，因此使用者期望有很大的試驗自由度。（但顯然我們不想每天都重置機器。）預設情況下我可以很好的流程嗎？或者限制 I/0 使機器不會“凍結”？系統正在執行一個在 6 x 上具有 raid 6 的 raidcontroller
Western Digital RE4供參考的規格：（雖然工作量提高到 19）
iotop：（最大約 60 M/s）
Total DISK READ : 51.72 M/s | Total DISK WRITE : 42.40 M/s Actual DISK READ: 786.07 K/s | Actual DISK WRITE: 131.94 K/s頂部同時：
top - 09:58:27 up 1 day, 26 min, 6 users, load average: 142.30, 144.85, 148.19 Tasks: 785 total, 8 running, 777 sleeping, 0 stopped, 0 zombie %Cpu(s): 0.0 us, 6.5 sy, 93.0 ni, 0.0 id, 0.1 wa, 0.0 hi, 0.3 si, 0.0 st KiB Mem : 52838147+total, 707112 free, 51992025+used, 7754104 buff/cache KiB Swap: 4194300 total, 0 free, 4194300 used. 7746868 avail Mem免費-m
total used free shared buff/cache available Mem: 515997 507679 719 3 7598 7631 Swap: 4095 4095 0貓 /proc/cpuinfo
processor : 63 vendor_id : GenuineIntel cpu family : 6 model : 47 model name : Intel(R) Xeon(R) CPU E7- 4830 @ 2.13GHz stepping : 2 microcode : 0x37 cpu MHz : 2134.000 cache size : 24576 KB physical id : 3 siblings : 16 core id : 25 cpu cores : 8 apicid : 243 initial apicid : 243 fpu : yes fpu_exception : yes cpuid level : 11 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 pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt aes lahf_lm ida arat epb dtherm tpr_shadow vnmi flexpriority ept vpid bogomips : 4266.05 clflush size : 64 cache_alignment : 64 address sizes : 44 bits physical, 48 bits virtual power management:lspci (raid 控制器)
02:00.0 RAID bus controller: 3ware Inc 9750 SAS2/SATA-II RAID PCIe (rev 05)系統 ：
cat /etc/redhat-release CentOS Linux release 7.2.1511 (Core) uname -r 3.10.0-327.el7.x86_64 lspci 00:00.0 Host bridge: Intel Corporation 5520/5500/X58 I/O Hub to ESI Port (rev 22) 00:01.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 1 (rev 22) 00:03.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 3 (rev 22) 00:07.0 PCI bridge: Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 7 (rev 22) 00:13.0 PIC: Intel Corporation 7500/5520/5500/X58 I/O Hub I/OxAPIC Interrupt Controller (rev 22) 00:14.0 PIC: Intel Corporation 7500/5520/5500/X58 I/O Hub System Management Registers (rev 22) 00:14.1 PIC: Intel Corporation 7500/5520/5500/X58 I/O Hub GPIO and Scratch Pad Registers (rev 22) 00:14.2 PIC: Intel Corporation 7500/5520/5500/X58 I/O Hub Control Status and RAS Registers (rev 22) 00:14.3 PIC: Intel Corporation 7500/5520/5500/X58 I/O Hub Throttle Registers (rev 22) 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 Root Port 1 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 IDE interface: Intel Corporation 82801JI (ICH10 Family) 4 port SATA IDE Controller #1 00:1f.3 SMBus: Intel Corporation 82801JI (ICH10 Family) SMBus Controller 00:1f.5 IDE interface: Intel Corporation 82801JI (ICH10 Family) 2 port SATA IDE Controller #2 02:00.0 RAID bus controller: 3ware Inc 9750 SAS2/SATA-II RAID PCIe (rev 05) 04:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) 04:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) 05:01.0 VGA compatible controller: Matrox Electronics Systems Ltd. MGA G200eW WPCM450 (rev 0a) fc:00.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 1 (rev 0c) fc:00.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 2 (rev 0c) fc:00.4 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 3 (rev 0c) fc:00.6 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 4 (rev 0c) fc:01.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Power Controller (rev 0c) fc:02.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Caching Agent 0 (rev 0c) fc:03.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Caching Agent 1 (rev 0c) fc:04.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Home Agent 0 (rev 0c) fc:05.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 0a (rev 0c) fc:05.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 0b (rev 0c) fc:05.4 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 0c (rev 0c) fc:05.6 Host bridge: Intel Corporation Device 2b53 (rev 0c) fc:06.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Home Agent 1 (rev 0c) fc:07.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 1a (rev 0c) fc:07.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 1b (rev 0c) fc:07.4 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 1c (rev 0c) fc:07.6 Host bridge: Intel Corporation Device 2b5b (rev 0c) fc:08.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 0 (rev 0c) fc:09.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 1 (rev 0c) fc:0a.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 2 (rev 0c) fc:0b.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 3 (rev 0c) fc:0c.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 4 (rev 0c) fc:0d.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 5 (rev 0c) fc:0e.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 6 (rev 0c) fc:0f.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 7 (rev 0c) fc:10.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 0-1 (rev 0c) fc:10.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 2-3 (rev 0c) fc:10.4 Host bridge: Intel Corporation Device 2b32 (rev 0c) fc:10.6 Host bridge: Intel Corporation Device 2b3a (rev 0c) fc:11.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 4-5 (rev 0c) fc:11.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 6-7 (rev 0c) fc:11.4 Host bridge: Intel Corporation Device 2b36 (rev 0c) fc:11.6 Host bridge: Intel Corporation Device 2b3e (rev 0c) fc:12.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Test and Debug 0 (rev 0c) fc:13.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Test and Debug 1 (rev 0c) fc:14.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 0: REUT control/status (rev 0c) fc:14.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 0: Misc. control/status (rev 0c) fc:15.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 1: REUT control/status (rev 0c) fc:15.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 1: Misc. control/status (rev 0c) fc:17.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 3: REUT control/status (rev 0c) fc:17.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 3: Misc. control/status (rev 0c) fc:18.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 0: REUT control/status (rev 0c) fc:18.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 0: Misc control/status (rev 0c) fc:19.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 1: REUT control/status (rev 0c) fc:19.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 1: Misc control/status (rev 0c) fc:1a.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 8 (rev 0c) fc:1b.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 9 (rev 0c) fd:00.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 1 (rev 0c) fd:00.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 2 (rev 0c) fd:00.4 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 3 (rev 0c) fd:00.6 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 4 (rev 0c) fd:01.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Power Controller (rev 0c) fd:02.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Caching Agent 0 (rev 0c) fd:03.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Caching Agent 1 (rev 0c) fd:04.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Home Agent 0 (rev 0c) fd:05.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 0a (rev 0c) fd:05.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 0b (rev 0c) fd:05.4 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 0c (rev 0c) fd:05.6 Host bridge: Intel Corporation Device 2b53 (rev 0c) fd:06.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Home Agent 1 (rev 0c) fd:07.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 1a (rev 0c) fd:07.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 1b (rev 0c) fd:07.4 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 1c (rev 0c) fd:07.6 Host bridge: Intel Corporation Device 2b5b (rev 0c) fd:08.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 0 (rev 0c) fd:09.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 1 (rev 0c) fd:0a.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 2 (rev 0c) fd:0b.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 3 (rev 0c) fd:0c.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 4 (rev 0c) fd:0d.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 5 (rev 0c) fd:0e.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 6 (rev 0c) fd:0f.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 7 (rev 0c) fd:10.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 0-1 (rev 0c) fd:10.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 2-3 (rev 0c) fd:10.4 Host bridge: Intel Corporation Device 2b32 (rev 0c) fd:10.6 Host bridge: Intel Corporation Device 2b3a (rev 0c) fd:11.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 4-5 (rev 0c) fd:11.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 6-7 (rev 0c) fd:11.4 Host bridge: Intel Corporation Device 2b36 (rev 0c) fd:11.6 Host bridge: Intel Corporation Device 2b3e (rev 0c) fd:12.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Test and Debug 0 (rev 0c) fd:13.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Test and Debug 1 (rev 0c) fd:14.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 0: REUT control/status (rev 0c) fd:14.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 0: Misc. control/status (rev 0c) fd:15.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 1: REUT control/status (rev 0c) fd:15.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 1: Misc. control/status (rev 0c) fd:17.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 3: REUT control/status (rev 0c) fd:17.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 3: Misc. control/status (rev 0c) fd:18.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 0: REUT control/status (rev 0c) fd:18.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 0: Misc control/status (rev 0c) fd:19.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 1: REUT control/status (rev 0c) fd:19.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 1: Misc control/status (rev 0c) fd:1a.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 8 (rev 0c) fd:1b.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 9 (rev 0c) fe:00.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 1 (rev 0c) fe:00.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 2 (rev 0c) fe:00.4 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 3 (rev 0c) fe:00.6 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 4 (rev 0c) fe:01.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Power Controller (rev 0c) fe:02.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Caching Agent 0 (rev 0c) fe:03.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Caching Agent 1 (rev 0c) fe:04.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Home Agent 0 (rev 0c) fe:05.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 0a (rev 0c) fe:05.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 0b (rev 0c) fe:05.4 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 0c (rev 0c) fe:05.6 Host bridge: Intel Corporation Device 2b53 (rev 0c) fe:06.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Home Agent 1 (rev 0c) fe:07.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 1a (rev 0c) fe:07.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 1b (rev 0c) fe:07.4 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 1c (rev 0c) fe:07.6 Host bridge: Intel Corporation Device 2b5b (rev 0c) fe:08.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 0 (rev 0c) fe:09.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 1 (rev 0c) fe:0a.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 2 (rev 0c) fe:0b.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 3 (rev 0c) fe:0c.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 4 (rev 0c) fe:0d.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 5 (rev 0c) fe:0e.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 6 (rev 0c) fe:0f.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 7 (rev 0c) fe:10.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 0-1 (rev 0c) fe:10.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 2-3 (rev 0c) fe:10.4 Host bridge: Intel Corporation Device 2b32 (rev 0c) fe:10.6 Host bridge: Intel Corporation Device 2b3a (rev 0c) fe:11.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 4-5 (rev 0c) fe:11.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 6-7 (rev 0c) fe:11.4 Host bridge: Intel Corporation Device 2b36 (rev 0c) fe:11.6 Host bridge: Intel Corporation Device 2b3e (rev 0c) fe:12.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Test and Debug 0 (rev 0c) fe:13.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Test and Debug 1 (rev 0c) fe:14.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 0: REUT control/status (rev 0c) fe:14.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 0: Misc. control/status (rev 0c) fe:15.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 1: REUT control/status (rev 0c) fe:15.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 1: Misc. control/status (rev 0c) fe:16.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 2: REUT control/status (rev 0c) fe:16.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 2: Misc. control/status (rev 0c) fe:17.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 3: REUT control/status (rev 0c) fe:17.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 3: Misc. control/status (rev 0c) fe:18.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 0: REUT control/status (rev 0c) fe:18.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 0: Misc control/status (rev 0c) fe:19.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 1: REUT control/status (rev 0c) fe:19.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 1: Misc control/status (rev 0c) fe:1a.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 8 (rev 0c) fe:1b.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 9 (rev 0c) ff:00.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 1 (rev 0c) ff:00.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 2 (rev 0c) ff:00.4 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 3 (rev 0c) ff:00.6 Host bridge: Intel Corporation Xeon Processor E7 Product Family System Configuration Controller 4 (rev 0c) ff:01.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Power Controller (rev 0c) ff:02.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Caching Agent 0 (rev 0c) ff:03.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Caching Agent 1 (rev 0c) ff:04.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Home Agent 0 (rev 0c) ff:05.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 0a (rev 0c) ff:05.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 0b (rev 0c) ff:05.4 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 0c (rev 0c) ff:05.6 Host bridge: Intel Corporation Device 2b53 (rev 0c) ff:06.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Home Agent 1 (rev 0c) ff:07.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 1a (rev 0c) ff:07.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 1b (rev 0c) ff:07.4 Host bridge: Intel Corporation Xeon Processor E7 Product Family Memory Controller 1c (rev 0c) ff:07.6 Host bridge: Intel Corporation Device 2b5b (rev 0c) ff:08.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 0 (rev 0c) ff:09.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 1 (rev 0c) ff:0a.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 2 (rev 0c) ff:0b.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 3 (rev 0c) ff:0c.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 4 (rev 0c) ff:0d.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 5 (rev 0c) ff:0e.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 6 (rev 0c) ff:0f.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 7 (rev 0c) ff:10.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 0-1 (rev 0c) ff:10.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 2-3 (rev 0c) ff:10.4 Host bridge: Intel Corporation Device 2b32 (rev 0c) ff:10.6 Host bridge: Intel Corporation Device 2b3a (rev 0c) ff:11.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 4-5 (rev 0c) ff:11.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Router Port 6-7 (rev 0c) ff:11.4 Host bridge: Intel Corporation Device 2b36 (rev 0c) ff:11.6 Host bridge: Intel Corporation Device 2b3e (rev 0c) ff:12.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Test and Debug 0 (rev 0c) ff:13.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Test and Debug 1 (rev 0c) ff:14.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 0: REUT control/status (rev 0c) ff:14.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 0: Misc. control/status (rev 0c) ff:15.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 1: REUT control/status (rev 0c) ff:15.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 1: Misc. control/status (rev 0c) ff:16.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 2: REUT control/status (rev 0c) ff:16.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 2: Misc. control/status (rev 0c) ff:17.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 3: REUT control/status (rev 0c) ff:17.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family QPI Physical Port 3: Misc. control/status (rev 0c) ff:18.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 0: REUT control/status (rev 0c) ff:18.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 0: Misc control/status (rev 0c) ff:19.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 1: REUT control/status (rev 0c) ff:19.2 Host bridge: Intel Corporation Xeon Processor E7 Product Family SMI Physical Port 1: Misc control/status (rev 0c) ff:1a.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 8 (rev 0c) ff:1b.0 Host bridge: Intel Corporation Xeon Processor E7 Product Family Last Level Cache Coherence Engine 9 (rev 0c)// 更新
- 這也發生在分配 java 作業的執行中，文件系統在凍結之前感覺“慢”。（ls -l，貓，…）
- 更改標題以反映工作量，而不僅僅是 tar。
最後，它似乎是某種新的核心“功能”。在社區的幫助下，這似乎可行：/etc/sysctl.d/01-tune.conf (new file) # /proc/sys/vm/swappiness # 60 # /proc/sys/vm/vfs_cache_pressure # 100
# don't swap, our disks are slow # and we have plenty of memory vm.swappiness=5 # lesser reclaim of "VFS caches, versus pagecache and swap" vm.vfs_cache_pressure=50
升級過程中是否更改了任何硬體？
另請發布“lspci”輸出。
這聽起來確實是個難題，因為我有幾台 EL7 機器，它們的負載很重，沒有問題。