== sanity test 255a: check 'lfs ladvise -a willread' ===== 04:10:16 (1779696616)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.2932 s, 7.9 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-ffff8f70c2bac800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.304253
Iter 1/10: OSS cache speed: 0.320763
Iter 1/10: ladvise speed: 0.317279
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.308807
Iter 2/10: OSS cache speed: 0.31168
Iter 2/10: ladvise speed: 0.314585
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.375899
Iter 3/10: OSS cache speed: 0.340728
Iter 3/10: ladvise speed: 0.313361
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.319816
Iter 4/10: OSS cache speed: 0.327668
Iter 4/10: ladvise speed: 0.262812
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.271257
Iter 5/10: OSS cache speed: 0.302223
Iter 5/10: ladvise speed: 0.276191
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.281452
Iter 6/10: OSS cache speed: 0.281252
Iter 6/10: ladvise speed: 0.258681
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.260494
Iter 7/10: OSS cache speed: 0.25051
Iter 7/10: ladvise speed: 0.267559
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.281159
Iter 8/10: OSS cache speed: 0.270227
Iter 8/10: ladvise speed: 0.301216
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.290605
Iter 9/10: OSS cache speed: 0.329742
Iter 9/10: ladvise speed: 0.343293
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.322271
Iter 10/10: OSS cache speed: 0.315113
Iter 10/10: ladvise speed: 0.295981
Average uncached read: .30
Average speedup with OSS cached read:  .30 = +0%
Average speedup with ladvise willread:  .29 = +-3%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0