The db_verify slow gradually after system restart

Question

dear consultants:
After do the disk except error check , we found that the disk read is slow gradually after restart the system. but we have not the performance analyse before the disk except error check ,so we can't how to
lead the disk read slowly.
we found the disk read slowly by the db_verify job is slow gradually.
the db_verify command is "brbackup -u / -c force -m all -t online -w only_dbv"
now we don't know the databse reason or hardware lead to the db_verify slow.
could you so kind help me check it?

Answer 1

Date     Usr     Sys     Idl      Pages in/h           Pages out/h     
     avg     avg     avg           max           avg           max           avg
20090330     54     11     37     11,751,415     7,294,764     625,927     463,689
20090329     6     5     89     19,303,440     5,172,478     57,429     51,052
20090328     4     5     93     15,745,216     6,043,112     57,410     57,134
20090327     52     10     38     11,105,000     7,445,815     508,025     401,639
20090326     54     11     35     12,216,027     6,900,755     810,504     563,203
20090325     47     10     44     11,213,059     7,052,218     479,928     377,111
20090324     71     11     18     457,531     319,927     664,318     566,415
20090323     74     12     15     5,924,609     4,389,900     870,460     692,559
20090322     25     9     66     15,144,538     8,214,990     56,176     39,043
20090321     23     7     71     17,190,030     7,791,974     57,329     50,367
20090320     68     12     20     7,606,063     5,189,594     521,834     356,468
20090319     56     10     34     7,778,120     5,381,566     385,264     289,993
20090318     49     7     44     434,529     286,035     733,312     408,583
20090317     48     11     42     1,008,958     776,860     1,366,891     720,071
20090316     61     10     29     831,309     584,476     1,693,277     953,275
20090315     5     3     92     2,007,496     653,843     57,430     47,557
20090314     1     2     97     228,695     221,965     48,080     40,875
20090313     58     9     33     9,268,570     5,546,437     355,000     263,444
20090312     47     9     44     9,187,750     5,978,887     391,431     274,403
20090311     57     10     34     9,530,332     5,993,967     564,361     507,955
20090310     51     10     39     12,842,679     7,856,675     551,428     475,114
20090309     58     10     32     9,916,761     6,401,931     750,329     562,138
20090308     6     5     90     19,083,218     5,138,443     57,470     54,687
20090307     2     3     95     12,897,700     4,808,327     57,479     47,615
20090306     60     10     30     11,117,580     5,568,263     610,755     533,344
20090305     46     9     46     13,530,229     7,311,263     559,030     351,418
20090304     51     9     41     442,945     365,759     521,445     449,075
20090303     70     12     18     6,502,125     3,858,108     834,985     601,582
20090302     65     13     23     8,945,294     4,989,765     939,699     641,152
20090301     37     15     48     7,670,994     5,422,265     47,061     29,903
this is the page in and page out list, i found that after we restart the system ,the page in increase
and i didn't run the db_verify job ,the page in is reduce. does the db_verify job used the memory?
or to say the db_verify job cause the pagein increase and the disk read slow?
could you help me or give me some suggestion how to deal with it?
thank you very much for  your kindly support
Edited by: Xuewen Wang on Mar 31, 2009 3:49 AM