== sanity test 255a: check 'lfs ladvise -a willread' ===== 06:22:22 (1783074142)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 6.26306 s, 16.7 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-ffff8a9fa0f39000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.07988
Iter 1/10: OSS cache speed: 1.32791
Iter 1/10: ladvise speed: 1.32005
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.43363
Iter 2/10: OSS cache speed: 1.58874
Iter 2/10: ladvise speed: 1.49947
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.75365
Iter 3/10: OSS cache speed: 1.47308
Iter 3/10: ladvise speed: 1.57494
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.78171
Iter 4/10: OSS cache speed: 1.43294
Iter 4/10: ladvise speed: 1.71182
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.86404
Iter 5/10: OSS cache speed: 1.98904
Iter 5/10: ladvise speed: 1.9266
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.89707
Iter 6/10: OSS cache speed: 1.98713
Iter 6/10: ladvise speed: 1.90896
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.01298
Iter 7/10: OSS cache speed: 2.15862
Iter 7/10: ladvise speed: 2.04977
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.11694
Iter 8/10: OSS cache speed: 2.02755
Iter 8/10: ladvise speed: 1.9656
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.85506
Iter 9/10: OSS cache speed: 1.92559
Iter 9/10: ladvise speed: 2.0919
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.01787
Iter 10/10: OSS cache speed: 2.06424
Iter 10/10: ladvise speed: 2.01554
Average uncached read: 1.78
Average speedup with OSS cached read:  1.79 = +0%
Average speedup with ladvise willread:  1.80 = +1%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0