== sanity test 255a: check 'lfs ladvise -a willread' ===== 01:14:19 (1786943659)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 9.94744 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-ffff9f72c3daf800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.604396
Iter 1/10: OSS cache speed: 0.609637
Iter 1/10: ladvise speed: 0.571825
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.577569
Iter 2/10: OSS cache speed: 0.678301
Iter 2/10: ladvise speed: 0.645186
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.593322
Iter 3/10: OSS cache speed: 0.685289
Iter 3/10: ladvise speed: 0.664481
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.62773
Iter 4/10: OSS cache speed: 0.647954
Iter 4/10: ladvise speed: 0.375038
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.500271
Iter 5/10: OSS cache speed: 0.463171
Iter 5/10: ladvise speed: 0.47233
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.469658
Iter 6/10: OSS cache speed: 0.467453
Iter 6/10: ladvise speed: 0.588919
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.59507
Iter 7/10: OSS cache speed: 0.688435
Iter 7/10: ladvise speed: 0.725529
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.630441
Iter 8/10: OSS cache speed: 0.672585
Iter 8/10: ladvise speed: 0.699095
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.639666
Iter 9/10: OSS cache speed: 0.731324
Iter 9/10: ladvise speed: 0.760495
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.658474
Iter 10/10: OSS cache speed: 0.34819
Iter 10/10: ladvise speed: 0.434996
Average uncached read: .58
Average speedup with OSS cached read:  .59 = +1%
Average speedup with ladvise willread:  .59 = +1%
Speedup with OSS cached read less than 20%,  got 1%. Skipping ladvise willread check.
fail_loc=0