== sanity test 255a: check 'lfs ladvise -a willread' ===== 23:10:45 (1786763445)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.6046 s, 9.0 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
llite.lustre-ffff8e75061bd000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.385824
Iter 1/10: OSS cache speed: 0.346466
Iter 1/10: ladvise speed: 0.324297
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.317118
Iter 2/10: OSS cache speed: 0.287003
Iter 2/10: ladvise speed: 0.352128
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.343083
Iter 3/10: OSS cache speed: 0.335511
Iter 3/10: ladvise speed: 0.321292
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.33455
Iter 4/10: OSS cache speed: 0.354955
Iter 4/10: ladvise speed: 0.313425
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.329368
Iter 5/10: OSS cache speed: 0.338239
Iter 5/10: ladvise speed: 0.326719
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.322433
Iter 6/10: OSS cache speed: 0.329887
Iter 6/10: ladvise speed: 0.375735
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.329121
Iter 7/10: OSS cache speed: 0.331495
Iter 7/10: ladvise speed: 0.326873
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.31546
Iter 8/10: OSS cache speed: 0.340023
Iter 8/10: ladvise speed: 0.300056
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.359885
Iter 9/10: OSS cache speed: 0.34399
Iter 9/10: ladvise speed: 0.332041
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.327549
Iter 10/10: OSS cache speed: 0.351889
Iter 10/10: ladvise speed: 0.342702
Average uncached read: .33
Average speedup with OSS cached read:  .33 = +0%
Average speedup with ladvise willread:  .33 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0