More Cache Size Benchmarks

Why does increasing cache size slow down time series access so much?

bash-3.2$ ./tst_ar4 -h pr_A1_256_128_128.nc
cs[0] cs[1] cs[2] cache(MB) deflate shuffle read_hor(us) read_time_ser(us)
256   128   128   0.5       0       0       217          2773
256   128   128   1.0       0       0       214          1935
256   128   128   4.0       0       0       214          1929
256   128   128   32.0      0       0       160          84440
256   128   128   128.0     0       0       129          82407