== sanity test 255a: check 'lfs ladvise -a willread' ===== 11:28:03 (1787844483)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 9.08699 s, 11.5 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-ffff8e4c863eb000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.498423
Iter 1/10: OSS cache speed: 0.45539
Iter 1/10: ladvise speed: 0.482864
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.473392
Iter 2/10: OSS cache speed: 0.413154
Iter 2/10: ladvise speed: 0.455147
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.479381
Iter 3/10: OSS cache speed: 0.455432
Iter 3/10: ladvise speed: 0.444456
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.457242
Iter 4/10: OSS cache speed: 0.434703
Iter 4/10: ladvise speed: 0.449728
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.351799
Iter 5/10: OSS cache speed: 0.500359
Iter 5/10: ladvise speed: 0.450517
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.474006
Iter 6/10: OSS cache speed: 0.487949
Iter 6/10: ladvise speed: 0.339985
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.398543
Iter 7/10: OSS cache speed: 0.404565
Iter 7/10: ladvise speed: 0.438841
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.403927
Iter 8/10: OSS cache speed: 0.422166
Iter 8/10: ladvise speed: 0.359051
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.378024
Iter 9/10: OSS cache speed: 0.407364
Iter 9/10: ladvise speed: 0.497047
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.432727
Iter 10/10: OSS cache speed: 0.470969
Iter 10/10: ladvise speed: 0.408845
Average uncached read: .43
Average speedup with OSS cached read:  .44 = +2%
Average speedup with ladvise willread:  .43 = +0%
Speedup with OSS cached read less than 20%,  got 2%. Skipping ladvise willread check.
fail_loc=0