== sanity test 255a: check 'lfs ladvise -a willread' ===== 19:02:00 (1763337720)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 9.96411 s, 10.5 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-ffff8b6c1134f000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.429776
Iter 1/10: OSS cache speed: 0.41975
Iter 1/10: ladvise speed: 0.427248
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.419433
Iter 2/10: OSS cache speed: 0.392062
Iter 2/10: ladvise speed: 0.415055
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.392565
Iter 3/10: OSS cache speed: 0.397787
Iter 3/10: ladvise speed: 0.412699
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.405761
Iter 4/10: OSS cache speed: 0.395532
Iter 4/10: ladvise speed: 0.405671
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.424471
Iter 5/10: OSS cache speed: 0.424791
Iter 5/10: ladvise speed: 0.412356
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.409041
Iter 6/10: OSS cache speed: 0.42117
Iter 6/10: ladvise speed: 0.408694
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.395925
Iter 7/10: OSS cache speed: 0.390936
Iter 7/10: ladvise speed: 0.431969
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.456008
Iter 8/10: OSS cache speed: 0.45593
Iter 8/10: ladvise speed: 0.40669
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.407261
Iter 9/10: OSS cache speed: 0.426921
Iter 9/10: ladvise speed: 0.389652
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.411579
Iter 10/10: OSS cache speed: 0.338028
Iter 10/10: ladvise speed: 0.387607
Average uncached read: .41
Average speedup with OSS cached read:  .40 = +-2%
Average speedup with ladvise willread:  .40 = +-2%
Speedup with OSS cached read less than 20%,  got -2%. Skipping ladvise willread check.
fail_loc=0