== sanity test 255a: check 'lfs ladvise -a willread' ===== 23:53:24 (1721879604)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.65158 s, 39.5 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-ffff88012c848000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.43728
Iter 1/10: OSS cache speed: 2.69629
Iter 1/10: ladvise speed: 2.57811
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.46779
Iter 2/10: OSS cache speed: 2.83203
Iter 2/10: ladvise speed: 2.93041
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.41854
Iter 3/10: OSS cache speed: 2.70637
Iter 3/10: ladvise speed: 2.78367
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.63861
Iter 4/10: OSS cache speed: 2.62148
Iter 4/10: ladvise speed: 2.53965
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.6332
Iter 5/10: OSS cache speed: 2.54269
Iter 5/10: ladvise speed: 2.60664
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.33437
Iter 6/10: OSS cache speed: 2.60795
Iter 6/10: ladvise speed: 2.82361
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.92085
Iter 7/10: OSS cache speed: 2.58253
Iter 7/10: ladvise speed: 2.50489
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.52266
Iter 8/10: OSS cache speed: 2.58105
Iter 8/10: ladvise speed: 2.67044
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.55342
Iter 9/10: OSS cache speed: 2.53475
Iter 9/10: ladvise speed: 2.45839
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.35245
Iter 10/10: OSS cache speed: 2.43166
Iter 10/10: ladvise speed: 2.44637
Average uncached read: 2.52
Average speedup with OSS cached read: 2.61 = +3.57%
Average speedup with ladvise willread: 2.63 = +4.36%
Speedup with OSS cached read less than 20%, got 3.57%. Skipping ladvise willread check.
fail_loc=0