Disk avg response time is over 1000ms , lying between 3000 to 5000ms

g1abhi

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Jun 13, 2015
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I have a 500gb WDC WD5000AAKX hard disk. while using visual studio my hard disk usage reaches 100% easily and response time goes over 5000ms, while for the same project on another system i3 4130 , it barely goes to 100ms . everything is so slow . I have tried defragmenting 2 drives C and D.
C: 10 gb free / 78 Gb
D: 21 gb free/99.6 Gb
E: 1.1gb free/ 100 Gb
G: 9.28 gb free/186gb

I have run check disk and everything is ok. The disks are heavily defragmented though . i was able to defragment C and D , but E and G cud be defragmented due to low space . Its an office Pc so i cant delete exactly what i want .
What might be the problem here?