== sanity test 255a: check 'lfs ladvise -a willread' ===== 20:33:59 (1713486839)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.56492 s, 40.9 MB/s
ladvise: range [2, 1] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: range [2, 2] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: conflicting arguments of -l and -e
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

Synchronous ladvise should wait
fail_val=8
fail_loc=0x237
Asynchronous ladvise shouldn't wait
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.81253
Iter 1/10: OSS cache speed: 2.77836
Iter 1/10: ladvise speed: 2.85475
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.7523
Iter 2/10: OSS cache speed: 2.78054
Iter 2/10: ladvise speed: 2.56191
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.79209
Iter 3/10: OSS cache speed: 2.79479
Iter 3/10: ladvise speed: 2.63274
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.37035
Iter 4/10: OSS cache speed: 2.8166
Iter 4/10: ladvise speed: 2.83882
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.74505
Iter 5/10: OSS cache speed: 2.73992
Iter 5/10: ladvise speed: 2.77761
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.76989
Iter 6/10: OSS cache speed: 2.80069
Iter 6/10: ladvise speed: 2.81487
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.7838
Iter 7/10: OSS cache speed: 2.7504
Iter 7/10: ladvise speed: 2.80341
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.74019
Iter 8/10: OSS cache speed: 2.835
Iter 8/10: ladvise speed: 2.80886
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.82474
Iter 9/10: OSS cache speed: 2.64765
Iter 9/10: ladvise speed: 2.14834
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.49565
Iter 10/10: OSS cache speed: 2.65007
Iter 10/10: ladvise speed: 2.29186
Average uncached read: 2.70
Average speedup with OSS cached read: 2.75 = +1.85%
Average speedup with ladvise willread: 2.65 = +-1.85%
Speedup with OSS cached read less than 20%, got 1.85%. Skipping ladvise willread check.
fail_loc=0