== sanity test 255a: check 'lfs ladvise -a willread' ===== 18:18:50 (1746137930)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 6.60662 s, 15.9 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
llite.lustre-ffff88012d7ca800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.49349
Iter 1/10: OSS cache speed: 0.503324
Iter 1/10: ladvise speed: 0.518317
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.537106
Iter 2/10: OSS cache speed: 0.490586
Iter 2/10: ladvise speed: 0.451905
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.453227
Iter 3/10: OSS cache speed: 0.43884
Iter 3/10: ladvise speed: 0.459731
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.458294
Iter 4/10: OSS cache speed: 0.438881
Iter 4/10: ladvise speed: 0.452539
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.473018
Iter 5/10: OSS cache speed: 0.519303
Iter 5/10: ladvise speed: 0.517681
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.465374
Iter 6/10: OSS cache speed: 0.452098
Iter 6/10: ladvise speed: 0.434732
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.452564
Iter 7/10: OSS cache speed: 0.492454
Iter 7/10: ladvise speed: 0.505949
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.47429
Iter 8/10: OSS cache speed: 0.464131
Iter 8/10: ladvise speed: 0.485698
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.448339
Iter 9/10: OSS cache speed: 0.484322
Iter 9/10: ladvise speed: 0.476418
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.471842
Iter 10/10: OSS cache speed: 0.504364
Iter 10/10: ladvise speed: 0.477855
Average uncached read: .47
Average speedup with OSS cached read:  .47 = +0%
Average speedup with ladvise willread:  .47 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0