19刀终于下来了,才805小时,但是硬盘dd测试只有1.2mb/秒

mayapop1 · 发表于 2013-5-15 21:45:42

本帖最后由 mayapop1 于 2013-5-15 21:49 编辑

为什么dd测试这么慢

dd if=/dev/zero of=test bs=64k count=4k oflag=dsync

[root@sbcsecuresender ~]#  smartctl -A /dev/sda
smartctl 5.42 2011-10-20 r3458 [x86_64-linux-2.6.32-279.el6.x86_64] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF READ SMART DATA SECTION ===
SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME       FLAG    VALUE WORST THRESH TYPE    UPDATED  WHEN_FAIL                         ED RAW_VALUE
  1 Raw_Read_Error_Rate    0x000f 109 100 006 Pre-fail  Always    -                                  24645504
  3 Spin_Up_Time          0x0003 097 097 000 Pre-fail  Always    -                                  0
  4 Start_Stop_Count       0x0032 100 100 020 Old_age Always    -                                  10
  5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail  Always    -                                  0
  7 Seek_Error_Rate       0x000f 100 253 030 Pre-fail  Always    -                                  837916

  9 Power_On_Hours       0x0032 100 100 000 Old_age Always    -                                  805

10 Spin_Retry_Count       0x0013 100 100 097 Pre-fail  Always    -                                  0
12 Power_Cycle_Count    0x0032 100 100 020 Old_age Always    -                                  10
183 Runtime_Bad_Block    0x0032 100 100 000 Old_age Always    -                                  0
184 End-to-End_Error       0x0032 100 100 099 Old_age Always    -                                  0
187 Reported_Uncorrect    0x0032 100 100 000 Old_age Always    -                                  0
188 Command_Timeout       0x0032 100 100 000 Old_age Always    -                                  0
189 High_Fly_Writes       0x003a 100 100 000 Old_age Always    -                                  0
190 Airflow_Temperature_Cel 0x0022 073 068 045 Old_age Always    -                                  27 (Min/Max 26/28)
191 G-Sense_Error_Rate    0x0032 100 100 000 Old_age Always    -                                  0
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always    -                                  7
193 Load_Cycle_Count       0x0032 081 081 000 Old_age Always    -                                  39580
194 Temperature_Celsius    0x0022 027 040 000 Old_age Always    -                                  27 (0 17 0 0 0)
197 Current_Pending_Sector  0x0012 100 100 000 Old_age Always    -                                  0
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age Offline    -                                  0
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always    -                                  0
240 Head_Flying_Hours    0x0000 100 253 000 Old_age Offline    -                                  85766201934583
241 Total_LBAs_Written    0x0000 100 253 000 Old_age Offline    -                                  88797586
242 Total_LBAs_Read       0x0000 100 253 000 Old_age Offline    -                                  3991939

云生 · 发表于 2013-5-15 21:46:28

下载速度多少

mayapop1 · 发表于 2013-5-15 21:47:56

才这么点

[root@sbcsecuresender ~]# dd if=/dev/zero of=test bs=64k count=4k oflag=dsync ^C1826+0 records in
1826+0 records out
119668736 bytes (120 MB) copied, 77.9981 s, 1.5 MB/s

404 · 发表于 2013-5-15 21:50:02

dsync正常，你们被vps里fdatasync化的dsync骗太久了

yohu · 发表于 2013-5-15 21:50:54

参数问题而已，800多小时不错了，我的都1万多。

yjlml · 发表于 2013-5-15 21:52:22

我不知道怎么用

tointer · 发表于 2013-5-15 21:52:46

坏道了

mayapop1 · 发表于 2013-5-15 21:53:56

tointer 发表于 2013-5-15 21:52

坏道了

cs19861010 · 发表于 2013-5-15 21:52:00

为啥我执行 smartctl -A /dev/sda 会是[ol]

smartctl 5.43 2012-06-30 r3573 [i686-linux-2.6.32-279.el6.i686] (local build)

SMART Disabled. Use option -s with argument 'on' to enable it.[/ol]复制代码

wmfy808 · 发表于 2013-5-15 22:02:04

是500G么？貌似我的是500G，600多个小时
cs19861010 发表于 2013-5-15 22:17

是500G么？貌似我的是500G，600多个小时
我的是1t

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