實驗log IO trace的錄製 0223

模仿PVR (using intel open tool kit)，以下是參數

1st try
s i   cap  qdep  wr  wrnd  rrnd  str  wrsz  rdsz   warm   test     bw     iops      lat
  0 0  4300     8 100     5   100    1    32    32    5.0 5000.5  17.61      564    14.19
sinhome-desktop: sample 0 iter 0: (test) 88059.59 MB in 5000.46 sec 17.61 MB/sec 

1. 95% seq 
2. 32KB
3. address space 約4.5GB

2nd try

  s i   cap  qdep  wr  wrnd  rrnd  str  wrsz  rdsz   warm   test     bw     iops      lat

  0 0  4500     8 100     0   100    1    32    32    5.0 3000.3  55.84     1787     4.47

sinhome-desktop: sample 0 iter 0: (test) 167530.88 MB in 3000.31 sec 55.84 MB/sec 

post-processing to disksim format

cat inteltoolkit_trace.out | awk '{print ($1-1393167501.968118)*1000" ""0"" "$3" ""64"" ""0"}' > PVR_32KB_5GB.dis

note: output中的address單位是byte !!!

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postmark的參數

set size 65536 131072

set number 15000

set transactions 5000000

set location /media/benchmarkTarget2

set read 32768

set write 32768

set buffering false

set bias read -1

set bias create 5       // 設5會讓blktrace output長超快，而設10就超慢，待找問題

1. 32KB
2. address space 5GB

post-processing to disksim format

cat tmp3 | awk '{print ($4-6.474369353)*1000" ""0"" "$8" "$10*8" ""0"}' > pm2disksim

加速user1

cat PM_32KB_5GB+PVR_32KB_5GB.dis | awk '{if($6==1) {print $1/15" "$2" "$3" "$4" "$5" "$6} else print $0}' |sort -g -k 1 >PM_32KB_5GB_15m+PVR_32KB_5GB.dis