Changes between Version 41 and Version 42 of jazz/Performance_Tuning

Timestamp:

Apr 8, 2012, 10:45:45 PM (13 years ago)

Author:

jazz

Comment:

--

jazz/Performance_Tuning

@@ -230 +230 @@
  * [http://ubuntuforums.org/showthread.php?t=200004 iowait problem] - 顯示了使用 vmstat , iostat , hdparm 的技巧
 
+ * 在 Linux 底下查硬碟型號(hard disk model and serial number)
+   * [參考一] [http://taiwanwolf.blogspot.com/2009/02/linux.html 查看 Linux 系統資訊常用指令]
+   * [參考二] [http://www.cyberciti.biz/faq/linux-getting-scsi-ide-harddisk-information/ Linux: Find out serial / model number and vendor information for SATA and IDE hard disk]
+   * [參考三] [http://dbaspot.com/forums/linux-misc/245398-hard-disk-model-manufacturer.html Hard-disk model and manufacturer - linux-misc]
+   * [工具一] hdparm - [http://packages.debian.org/hdparm Debian 有 hdparm 套件] - 可以拿來測試硬碟效能
+{{{
+jazz@Wdebian:~$ sudo apt-get install hdparm
+jazz@Wdebian:~$ sudo hdparm -I /dev/sda | grep "Model Number"
+        Model Number:       ST31500341AS
+}}}
+   * 如果要測試硬碟 I/O 速度，可以用 '''hdparm -t'''
+{{{
+jazz@Wdebian:~$ sudo hdparm -t /dev/sda
+}}}
+   * [工具二] smartctl - [http://packages.debian.org/smartmontools Debian 有 smartmontools 套件] - [http://unixfoo.blogspot.com/2007/11/disk-information-using-smartctl.html 也可以拿來測試硬碟效能]
+{{{
+jazz@Wdebian:~$ sudo apt-get install smartmontools
+jazz@Wdebian:~$ sudo smartctl -a /dev/sda | grep "Device Model:"
+Device Model:     ST31500341AS
+}}}
+   * [低階指令一] 如果是 SCSI 或 SATA 硬碟，可以查 /proc/scsi/scsi
+{{{
+jazz@Wdebian:~$ cat /proc/scsi/scsi
+Attached devices:
+Host: scsi0 Channel: 00 Id: 00 Lun: 00
+  Vendor: ATA      Model: ST31500341AS     Rev: CC1H
+  Type:   Direct-Access                    ANSI  SCSI revision: 05
+Host: scsi1 Channel: 00 Id: 00 Lun: 00
+  Vendor: TSSTcorp Model: DVD-ROM TS-H353B Rev: D500
+  Type:   CD-ROM                           ANSI  SCSI revision: 05
+Host: scsi2 Channel: 00 Id: 00 Lun: 00
+  Vendor: ATA      Model: ST3640323AS      Rev: SD35
+  Type:   Direct-Access                    ANSI  SCSI revision: 05
+}}}
+   * [低階指令二] 如果是 IDE 硬碟，可以查 /proc/ide/hd*/model
+{{{
+jazz@lenny:~$ sudo cat /proc/ide/hda/model
+VBOX HARDDISK
+}}}
+
 == Network Performance Tuning ==