tempfile.txt is size 35 Mb
SV = PV(0x177f89db120) at 0x177f88bcca0
  REFCNT = 1
  FLAGS = (POK,IsCOW,pPOK)
  PV = 0x177fa280250 " Querysome random text 0.271320203145251\n"\0
  CUR = 41
  LEN = 408
  COW_REFCNT = 2
SV = PV(0x177f89db120) at 0x177f88bcca0
  REFCNT = 1
  FLAGS = (POK,IsCOW,pPOK)
  PV = 0x177fa34f4d0 " Querysome random text 0.775348369818055some random text 0.775348369818055\n"\0
  CUR = 75
  LEN = 201
  COW_REFCNT = 2
SV = PV(0x177f89db120) at 0x177f88bcca0
  REFCNT = 1
  FLAGS = (POK,IsCOW,pPOK)
  PV = 0x177fa3a28b0 " Querysome random text 0.785001144808529\n"\0
  CUR = 41
  LEN = 43
  COW_REFCNT = 2
SV = PV(0x177f89db120) at 0x177f88bcca0
  REFCNT = 1
  FLAGS = (POK,IsCOW,pPOK)
  PV = 0x177fa297c60 " Querysome random text 0.894431999356865\n"\0
  CUR = 41
  LEN = 309
  COW_REFCNT = 2
SV = PV(0x177f89db120) at 0x177f88bcca0
  REFCNT = 1
  FLAGS = (POK,IsCOW,pPOK)
  PV = 0x177f88a13b0 " Querysome random text 0.412049736815259some random text 0.412049736815259some random text 0.412049736815259some random text 0.412049736815259some random text 0.412049736815259some random text 0.412049736815259some random text 0.412049736815259some random text 0.412049736815259some random text 0.412049736815259\n"\0
  CUR = 313
  LEN = 392
  COW_REFCNT = 2
SV = PV(0x177f89db120) at 0x177f88bcca0
  REFCNT = 1
  FLAGS = (POK,IsCOW,pPOK)
  PV = 0x177fa3750d0 " Querysome random text 0.809515115277865\n"\0
  CUR = 41
  LEN = 275
  COW_REFCNT = 2
0.005142 read lines from disk and do RE (6 matches).


SV = PV(0x177f89db120) at 0x177f88bcca0
  REFCNT = 1
  FLAGS = (POK,IsCOW,pPOK)
  PV = 0x177f88b3ed0 " Querysome random text 0.271320203145251\n"\0
  CUR = 41
  LEN = 656
  COW_REFCNT = 2
SV = PV(0x177f89db120) at 0x177f88bcca0
  REFCNT = 1
  FLAGS = (POK,IsCOW,pPOK)
  PV = 0x1778000b070 " Querysome random text 0.775348369818055some random text 0.775348369818055\n"\0
  CUR = 75
  LEN = 37784908
  COW_REFCNT = 2
SV = PV(0x177f89db120) at 0x177f88bcca0
  REFCNT = 1
  FLAGS = (POK,IsCOW,pPOK)
  PV = 0x1778242b070 " Querysome random text 0.785001144808529\n"\0
  CUR = 41
  LEN = 37784634
  COW_REFCNT = 2
SV = PV(0x177f89db120) at 0x177f88bcca0
  REFCNT = 1
  FLAGS = (POK,IsCOW,pPOK)
  PV = 0x1778000d070 " Querysome random text 0.894431999356865\n"\0
  CUR = 41
  LEN = 37784593
  COW_REFCNT = 2
SV = PV(0x177f89db120) at 0x177f88bcca0
  REFCNT = 1
  FLAGS = (POK,IsCOW,pPOK)
  PV = 0x1778242b070 " Querysome random text 0.412049736815259some random text 0.412049736815259some random text 0.412049736815259some random text 0.412049736815259some random text 0.412049736815259some random text 0.412049736815259some random text 0.412049736815259some random text 0.412049736815259some random text 0.412049736815259\n"\0
  CUR = 313
  LEN = 37784176
  COW_REFCNT = 2
SV = PV(0x177f89db120) at 0x177f88bcca0
  REFCNT = 1
  FLAGS = (POK,IsCOW,pPOK)
  PV = 0x1778000f070 " Querysome random text 0.809515115277865\n"\0
  CUR = 41
  LEN = 37783182
  COW_REFCNT = 2
0.004073 read lines from in-memory file and do RE (6 matches).