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#sudo hdparm -i /dev/cciss/c0d0/dev/cciss/c0d0: HDIO_GET_IDENTITY failed: Inappropriate ioctl for device
$ lsmodModule Size Used byvboxnetadp 107564 0 vboxnetflt 114924 1 vboxdrv 1719564 2 vboxnetfltnfsd 285728 1 lockd 83924 1 nfsdnfs_acl 11776 1 nfsdauth_rpcgss 52512 1 nfsdsunrpc 227432 4 nfsd,lockd,nfs_acl,auth_rpcgssexportfs 13440 1 nfsdvideo 29844 0 output 11648 1 videoinput_polldev 12688 0 lp 19588 0 parport 49584 1 lpiTCO_wdt 21712 0 iTCO_vendor_support 12420 1 iTCO_wdtipmi_si 52972 0 psmouse 64028 0 hpilo 17680 0 i5000_edac 19216 0 edac_core 55360 3 i5000_edacipmi_msghandler 46584 1 ipmi_siserio_raw 14468 0 shpchp 44572 0 pcspkr 11136 0 usbhid 47040 0 bnx2 191880 0 cciss 99208 5 fbcon 49792 0 tileblit 11264 1 fbconfont 17024 1 fbconbitblit 14464 1 fbconsoftcursor 10368 1 bitblit
$ lspci00:00.0 Host bridge: Intel Corporation 5000P Chipset Memory Controller Hub (rev b1)00:02.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x4 Port 2 (rev b1)00:03.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x4 Port 3 (rev b1)00:04.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x8 Port 4-5 (rev b1)00:05.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x4 Port 5 (rev b1)00:06.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x4 Port 6 (rev b1)00:07.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x4 Port 7 (rev b1)00:10.0 Host bridge: Intel Corporation 5000 Series Chipset FSB Registers (rev b1)00:10.1 Host bridge: Intel Corporation 5000 Series Chipset FSB Registers (rev b1)00:10.2 Host bridge: Intel Corporation 5000 Series Chipset FSB Registers (rev b1)00:11.0 Host bridge: Intel Corporation 5000 Series Chipset Reserved Registers (rev b1)00:13.0 Host bridge: Intel Corporation 5000 Series Chipset Reserved Registers (rev b1)00:15.0 Host bridge: Intel Corporation 5000 Series Chipset FBD Registers (rev b1)00:16.0 Host bridge: Intel Corporation 5000 Series Chipset FBD Registers (rev b1)00:1d.0 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #1 (rev 09)00:1d.1 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #2 (rev 09)00:1d.2 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #3 (rev 09)00:1d.3 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset UHCI USB Controller #4 (rev 09)00:1d.7 USB Controller: Intel Corporation 631xESB/632xESB/3100 Chipset EHCI USB2 Controller (rev 09)00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d9)00:1f.0 ISA bridge: Intel Corporation 631xESB/632xESB/3100 Chipset LPC Interface Controller (rev 09)00:1f.1 IDE interface: Intel Corporation 631xESB/632xESB IDE Controller (rev 09)01:03.0 VGA compatible controller: ATI Technologies Inc ES1000 (rev 02)01:04.0 System peripheral: Compaq Computer Corporation Integrated Lights Out Controller (rev 03)01:04.2 System peripheral: Compaq Computer Corporation Integrated Lights Out Processor (rev 03)01:04.4 USB Controller: Hewlett-Packard Company Proliant iLO2 virtual USB controller01:04.6 IPMI SMIC interface: Hewlett-Packard Company Proliant iLO2 virtual UART02:00.0 PCI bridge: Broadcom EPB PCI-Express to PCI-X Bridge (rev c3)03:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)04:00.0 PCI bridge: Broadcom EPB PCI-Express to PCI-X Bridge (rev c3)05:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)06:00.0 PCI bridge: Broadcom EPB PCI-Express to PCI-X Bridge (rev b4)07:04.0 PCI bridge: Broadcom BCM5785 [HT1000] PCI/PCI-X Bridge (rev b2)07:08.0 RAID bus controller: Hewlett-Packard Company Smart Array E200i (SAS Controller)09:00.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Upstream Port (rev 01)09:00.3 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express to PCI-X Bridge (rev 01)0a:00.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Downstream Port E1 (rev 01)0a:01.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Downstream Port E2 (rev 01)0a:02.0 PCI bridge: Intel Corporation 6311ESB/6321ESB PCI Express Downstream Port E3 (rev 01)
$ sudo dd if=/dev/cciss/c0d0 of=/dev/null bs=1M count=500500+0 records in500+0 records out524288000 bytes (524 MB) copied, 2,34044 s, 224 MB/s$ sudo dd if=/dev/cciss/c0d1 of=/dev/null bs=1M count=500500+0 records in500+0 records out524288000 bytes (524 MB) copied, 5,69641 s, 92,0 MB/s
есть три общеизвестные причины падения скорости:1) много файлов меньше 1мб;2) большая фрагментированность жесткого диска;3) бэды, которые система с запаздыванием обруливает.
$ df -hFilesystem Size Used Avail Use% Mounted on/dev/cciss/c0d0p1 65G 37G 25G 60% /tmpfs 1,5G 0 1,5G 0% /lib/init/rwvarrun 1,5G 128K 1,5G 1% /var/runvarlock 1,5G 0 1,5G 0% /var/lockudev 1,5G 156K 1,5G 1% /devtmpfs 1,5G 0 1,5G 0% /dev/shmlrm 1,5G 2,5M 1,5G 1% /lib/modules/2.6.28-16-server/volatile/dev/cciss/c0d1p1 459G 84G 353G 20% /data
а как у нас с охлаждением обстоит дело в серверной? PS единственное решение которое я вижу - это смена ФС
ext3 медленная отроду
$dd if=offtopic-ru.iso of=/dev/null bs=1M count=500500+0 records in500+0 records out524288000 bytes (524 MB) copied, 5,71312 s, 91,8 MB/s$ dd if=offtopic-ru.iso of=/dev/null bs=1M690+1 records in690+1 records out723976192 bytes (724 MB) copied, 2,58493 s, 280 MB/sr$ dd if=offtopic-ru.iso of=/dev/null bs=1M690+1 records in690+1 records out723976192 bytes (724 MB) copied, 1,05833 s, 684 MB/s$ dd if=offtopic-ru.iso of=/dev/null bs=1M690+1 records in690+1 records out723976192 bytes (724 MB) copied, 0,2766 s, 2,6 GB/s$ dd if=offtopic-ru.iso of=/dev/null bs=1M690+1 records in690+1 records out723976192 bytes (724 MB) copied, 0,282363 s, 2,6 GB/s
$ dd if=offtopic-ru.iso of=../temp/temp.iso bs=1M690+1 records in690+1 records out723976192 bytes (724 MB) copied, 56,4026 s, 12,8 MB/s$ dd if=offtopic-ru.iso of=../temp/temp.iso bs=1M690+1 records in690+1 records out723976192 bytes (724 MB) copied, 77,7676 s, 9,3 MB/s
$ dd if=temp.iso of=temp2.iso1414016+0 records in1414016+0 records out723976192 bytes (724 MB) copied, 63,6974 s, 11,4 MB/s$ dd if=temp.iso of=temp2.iso1414016+0 records in1414016+0 records out723976192 bytes (724 MB) copied, 85,7151 s, 8,4 MB/s
sudo dd if=/dev/sda of=~/sda count=100 bs=1M
$ sudo dd if=/dev/cciss/c0d1p1 of=dump count=100 bs=1M100+0 records in100+0 records out104857600 bytes (105 MB) copied, 9,23567 s, 11,4 MB/s$ sudo dd if=/dev/cciss/c0d1p1 of=dump count=100 bs=1M100+0 records in100+0 records out104857600 bytes (105 MB) copied, 15,8816 s, 6,6 MB/s
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