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[root@esdb2 ~]# dd if=/dev/zero of=/dev/sdb bs=1024 count=1024000
1024000+0 records in
1024000+0 records out
1048576000 bytes (1.0 GB) copied, 1.35788 s, 772 MB/s
[root@esdb2 ~]# dd if=/dev/zero of=/dev/sdv bs=1024 count=1024000
1024000+0 records in
1024000+0 records out
1048576000 bytes (1.0 GB) copied, 1.406 s, 746 MB/s
[root@esdb2 ~]# dd if=/dev/zero of=/dev/sdg bs=1024 count=1024000
1024000+0 records in
1024000+0 records out
1048576000 bytes (1.0 GB) copied, 1.3599 s, 771 MB/s
[root@esdb2 ~]# dd if=/dev/zero of=/dev/sdaa bs=1024 count=1024000
1024000+0 records in
1024000+0 records out
1048576000 bytes (1.0 GB) copied, 91.9218 s, 11.4 MB/s
[root@esdb2 ~]#
sdb£¬sdg,sdv,sdaaÊÇͬһ¸ölunµÄ²»Í¬Á´Â·
ÏÂÃæÊÇÎÒdd sdaaʱ£¬ÓÃiostatÉú³ÉµÄͳ¼ÆÊý¾Ý£¬¸ã²»¶®ÎªÉ¶»áÓжÁµÄ²úÉú£¬ÆäËûµÄÅÌdd¶¼²»»áÓдóÁ¿¶Á£¬¶øÇÒÒ²ÄÜ¿´³öÓÐÒ»¸öдÓÐ715920£¬ËãÆðÒ²ÓÐÓÖ350MB×óÓÒ£¬
Device tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sdaa 0.08 0.64 0.62 6306432 6144000
sdaa 2796.00 22368.00 0.00 22368 0
sdaa 2861.00 22888.00 0.00 22888 0
sdaa 2858.00 22864.00 0.00 22864 0
sdaa 2840.00 22720.00 0.00 22720 0
sdaa 2865.00 22920.00 0.00 22920 0
sdaa 2859.00 22872.00 0.00 22872 0
sdaa 2835.64 22685.15 0.00 22912 0
sdaa 2834.00 22672.00 0.00 22672 0
sdaa 2864.00 22912.00 0.00 22912 0
sdaa 2855.00 22840.00 0.00 22840 0
sdaa 2870.00 22960.00 0.00 22960 0
sdaa 2864.00 22912.00 0.00 22912 0
sdaa 2776.00 22208.00 0.00 22208 0
sdaa 2777.00 22216.00 0.00 22216 0
sdaa 2814.00 22512.00 0.00 22512 0
sdaa 2847.00 22776.00 0.00 22776 0
sdaa 2868.00 22944.00 0.00 22944 0
sdaa 2842.00 22736.00 0.00 22736 0
sdaa 2867.00 22936.00 0.00 22936 0
sdaa 2841.00 22728.00 0.00 22728 0
sdaa 2866.00 22928.00 0.00 22928 0
sdaa 2869.00 22952.00 0.00 22952 0
sdaa 2878.00 23024.00 0.00 23024 0
sdaa 2838.00 22704.00 0.00 22704 0
sdaa 2309.00 12808.00 715920.00 12808 715920
sdaa 2849.00 22792.00 0.00 22792 0
sdaa 2869.00 22952.00 0.00 22952 0
sdaa 2825.00 22600.00 0.00 22600 0
sdaa 2871.00 22968.00 0.00 22968 0
sdaa 2855.00 22840.00 0.00 22840 0
sdaa 2785.00 22280.00 0.00 22280 0
sdaa 2835.00 22680.00 0.00 22680 0
sdaa 2857.00 22856.00 0.00 22856 0
sdaa 2823.00 22584.00 0.00 22584 0
sdaa 2832.00 22656.00 0.00 22656 0
sdaa 2844.00 22752.00 0.00 22752 0
sdaa 2856.00 22848.00 0.00 22848 0
sdaa 2841.00 22728.00 0.00 22728 0
sdaa 2849.00 22792.00 0.00 22792 0
sdaa 2847.00 22776.00 0.00 22776 0
sdaa 2856.00 22848.00 0.00 22848 0
sdaa 2850.00 22800.00 0.00 22800 0
Õâ¸öÊÇsdvµÄiostat£¬¿ÉÒÔ¿´³öÊÇûÓжÁreadµÄ
sdv 0.00 0.00 0.00 0 0
sdv 0.00 0.00 0.00 0 0
sdv 1167.00 0.00 1186040.00 0 1186040
sdv 843.00 0.00 861960.00 0 861960
sdv 0.00 0.00 0.00 0 0
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