== sanity test 255a: check 'lfs ladvise -a willread' ===== 11:05:54 (1787497554)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.8884 s, 7.6 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-ffff9cf886290000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.413701
Iter 1/10: OSS cache speed: 0.385062
Iter 1/10: ladvise speed: 0.385492
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.384414
Iter 2/10: OSS cache speed: 0.413607
Iter 2/10: ladvise speed: 0.399213
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.40737
Iter 3/10: OSS cache speed: 0.420168
Iter 3/10: ladvise speed: 0.439167
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.442949
Iter 4/10: OSS cache speed: 0.408366
Iter 4/10: ladvise speed: 0.379216
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.426077
Iter 5/10: OSS cache speed: 0.370864
Iter 5/10: ladvise speed: 0.411561
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.413327
Iter 6/10: OSS cache speed: 0.408108
Iter 6/10: ladvise speed: 0.334085
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.349786
Iter 7/10: OSS cache speed: 0.395646
Iter 7/10: ladvise speed: 0.373887
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.35386
Iter 8/10: OSS cache speed: 0.390585
Iter 8/10: ladvise speed: 0.440982
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.399539
Iter 9/10: OSS cache speed: 0.418572
Iter 9/10: ladvise speed: 0.421602
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.395625
Iter 10/10: OSS cache speed: 0.387536
Iter 10/10: ladvise speed: 0.395437
Average uncached read: .39
Average speedup with OSS cached read:  .39 = +0%
Average speedup with ladvise willread:  .39 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0