yes realloc can be used to shrink the allocated memory. yes the remaining
memory will be freed.
IF we want to allocate more memory and if there is no enough room in that
particular boundary, i will allocate a new block ,copy the contents and
free the previous contents
On Thu, Sep 22, 2011 at
Hi
I have a doubt in functioning of realloc. Can we use realloc to shrink
the memory already allocated ? If yes, will it also free the left over
memory or programmer has to do it ? Also, while reallocating if it has
to move to some other location does the earlier location gets freed or
is it
@aditya and dipankar: the ans given ws 500ns that is why i posted dis
ques...i ws getting the same ans...
On Tue, Aug 9, 2011 at 9:45 AM, ankit sambyal ankitsamb...@gmail.comwrote:
@aditya : can u explain how u got c part as the answer for question 2
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You received this message because you
@aditi did they mention any thing about miss penalty also in the question ??
On Tue, Aug 9, 2011 at 11:48 AM, aditi garg aditi.garg.6...@gmail.comwrote:
@aditya and dipankar: the ans given ws 500ns that is why i posted dis
ques...i ws getting the same ans...
On Tue, Aug 9, 2011 at 9:45 AM,
@Rohit:No...i directly copy pasted the ques...nothing else mentioned...and
what if thr ws sm miss penalty?what wud be the change in soution?
On Tue, Aug 9, 2011 at 1:37 PM, Rohit Srivastava access2ro...@gmail.comwrote:
@aditi did they mention any thing about miss penalty also in the question
yup !!! it will increase the avg access time
On Tue, Aug 9, 2011 at 1:39 PM, aditi garg aditi.garg.6...@gmail.comwrote:
@Rohit:No...i directly copy pasted the ques...nothing else mentioned...and
what if thr ws sm miss penalty?what wud be the change in soution?
On Tue, Aug 9, 2011 at 1:37
Q1.in a memory hierarchy, M1,M2
M1 access time is 2 ns ,M2 accesstime is 100 ns . the hit ratio for
M1 is .97, then what's the avg access time?
Q2.two heaps of sizes m,n are given,
then the time needed to merge them
a)m
b)n
c)m+n
d) none
Q3.context switching is useful in
a) spooling
b) polling
Q1.in a memory hierarchy, M1,M2
M1 access time is 2 ns ,M2 accesstime is 100 ns . the hit ratio for
M1 is .97, then what's the avg access time?
Q2.two heaps of sizes m,n are given,
then the time needed to merge them
a)m
b)n
c)m+n
d) none
Q3.context switching is useful in
a) spooling
b) polling
4.94 ns
c
c
b
On Tue, Aug 9, 2011 at 1:32 AM, aditi garg aditi.garg.6...@gmail.comwrote:
Q1.in a memory hierarchy, M1,M2
M1 access time is 2 ns ,M2 accesstime is 100 ns . the hit ratio for
M1 is .97, then what's the avg access time?
Q2.two heaps of sizes m,n are given,
then the time needed
can u explain ques 3 and 4?
Fr ques 3 why not interrupt servicing? and in 4 why not both?
On Tue, Aug 9, 2011 at 1:42 AM, Aditya Virmani virmanisadi...@gmail.comwrote:
4.94 ns
c
c
b
On Tue, Aug 9, 2011 at 1:32 AM, aditi garg aditi.garg.6...@gmail.comwrote:
Q1.in a memory hierarchy,
For ques 3, remember that context switch is useful in 3 situations :
1. Multitasking (when CPU is to be switched among processes(usually
preemptive))
2. Interrupt Handling (different from interrupt servicing) - In this, CPU
requests for a service (eg read from a disk) but doesnt wait for it to
In hierarchy M1-M2
0.97 Hit = 2x0.97 = 1.94 ns
M2 is not accessed in case of hit
0.03 Miss = 0.03x100 = 3ns (miss rate x miss penalty)
Total = 4.94ns
+1 to Aditya
so the average access time is = hit + miss = 1.94 + 100.06
On 9 August 2011 08:11, Raman raman.u...@gmail.com wrote:
For ques 3,
Sorry for the last line.. Made some error before.
On 9 August 2011 08:51, Dipankar Patro dip10c...@gmail.com wrote:
In hierarchy M1-M2
0.97 Hit = 2x0.97 = 1.94 ns
M2 is not accessed in case of hit
0.03 Miss = 0.03x100 = 3ns (miss rate x miss penalty)
Total = 4.94ns
+1 to Aditya
so the
@aditya : can u explain how u got c part as the answer for question 2
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