== sanity test 255a: check 'lfs ladvise -a willread' ===== 04:28:32 (1787732912)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.8021 s, 8.2 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-ffffa0af90f2c000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.502816
Iter 1/10: OSS cache speed: 0.445048
Iter 1/10: ladvise speed: 0.397317
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.412977
Iter 2/10: OSS cache speed: 0.360608
Iter 2/10: ladvise speed: 0.356402
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.415765
Iter 3/10: OSS cache speed: 0.355121
Iter 3/10: ladvise speed: 0.32505
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.268593
Iter 4/10: OSS cache speed: 0.31958
Iter 4/10: ladvise speed: 0.35198
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.383045
Iter 5/10: OSS cache speed: 0.335322
Iter 5/10: ladvise speed: 0.39375
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.349709
Iter 6/10: OSS cache speed: 0.410054
Iter 6/10: ladvise speed: 0.431293
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.331972
Iter 7/10: OSS cache speed: 0.420818
Iter 7/10: ladvise speed: 0.425099
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.46369
Iter 8/10: OSS cache speed: 0.349758
Iter 8/10: ladvise speed: 0.397643
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.424232
Iter 9/10: OSS cache speed: 0.426843
Iter 9/10: ladvise speed: 0.401726
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.430001
Iter 10/10: OSS cache speed: 0.418748
Iter 10/10: ladvise speed: 0.411949
Average uncached read: .39
Average speedup with OSS cached read:  .38 = +-2%
Average speedup with ladvise willread:  .38 = +-2%
Speedup with OSS cached read less than 20%,  got -2%. Skipping ladvise willread check.
fail_loc=0