== sanity test 255a: check 'lfs ladvise -a willread' ===== 11:08:07 (1790003287)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 18.1224 s, 5.8 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-ffff8da9c35b3000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.268945
Iter 1/10: OSS cache speed: 0.263926
Iter 1/10: ladvise speed: 0.287911
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.316258
Iter 2/10: OSS cache speed: 0.27218
Iter 2/10: ladvise speed: 0.26441
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.30016
Iter 3/10: OSS cache speed: 0.284617
Iter 3/10: ladvise speed: 0.294827
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.264395
Iter 4/10: OSS cache speed: 0.276768
Iter 4/10: ladvise speed: 0.337508
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.264345
Iter 5/10: OSS cache speed: 0.271655
Iter 5/10: ladvise speed: 0.316701
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.317963
Iter 6/10: OSS cache speed: 0.343281
Iter 6/10: ladvise speed: 0.341382
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.282161
Iter 7/10: OSS cache speed: 0.313328
Iter 7/10: ladvise speed: 0.291342
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.276369
Iter 8/10: OSS cache speed: 0.308678
Iter 8/10: ladvise speed: 0.336459
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.353676
Iter 9/10: OSS cache speed: 0.342261
Iter 9/10: ladvise speed: 0.315919
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.274632
Iter 10/10: OSS cache speed: 0.249596
Iter 10/10: ladvise speed: 0.244675
Average uncached read: .29
Average speedup with OSS cached read:  .29 = +0%
Average speedup with ladvise willread:  .30 = +3%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0