== sanity test 255a: check 'lfs ladvise -a willread' ===== 18:46:51 (1786834011)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 10.7705 s, 9.7 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-ffff95074aee0800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.353116
Iter 1/10: OSS cache speed: 0.339715
Iter 1/10: ladvise speed: 0.31679
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.34663
Iter 2/10: OSS cache speed: 0.336995
Iter 2/10: ladvise speed: 0.326401
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.340244
Iter 3/10: OSS cache speed: 0.372955
Iter 3/10: ladvise speed: 0.368542
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.401944
Iter 4/10: OSS cache speed: 0.375144
Iter 4/10: ladvise speed: 0.401348
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.387054
Iter 5/10: OSS cache speed: 0.399575
Iter 5/10: ladvise speed: 0.380412
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.393026
Iter 6/10: OSS cache speed: 0.410537
Iter 6/10: ladvise speed: 0.391685
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.417022
Iter 7/10: OSS cache speed: 0.432357
Iter 7/10: ladvise speed: 0.437299
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.425348
Iter 8/10: OSS cache speed: 0.424877
Iter 8/10: ladvise speed: 0.468691
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.480532
Iter 9/10: OSS cache speed: 0.519156
Iter 9/10: ladvise speed: 0.456021
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.456691
Iter 10/10: OSS cache speed: 0.457763
Iter 10/10: ladvise speed: 0.480735
Average uncached read: .40
Average speedup with OSS cached read:  .40 = +0%
Average speedup with ladvise willread:  .40 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0