== sanity test 255a: check 'lfs ladvise -a willread' ===== 20:44:14 (1733795054)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.30484 s, 45.5 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-ffff8800b5af7800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.77209
Iter 1/10: OSS cache speed: 2.48809
Iter 1/10: ladvise speed: 2.35214
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.72649
Iter 2/10: OSS cache speed: 2.69338
Iter 2/10: ladvise speed: 2.74542
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.55159
Iter 3/10: OSS cache speed: 2.74554
Iter 3/10: ladvise speed: 2.40188
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.7269
Iter 4/10: OSS cache speed: 2.72156
Iter 4/10: ladvise speed: 2.50774
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.48591
Iter 5/10: OSS cache speed: 2.49332
Iter 5/10: ladvise speed: 2.54012
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.53614
Iter 6/10: OSS cache speed: 2.54691
Iter 6/10: ladvise speed: 2.43294
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.552
Iter 7/10: OSS cache speed: 2.67981
Iter 7/10: ladvise speed: 2.65359
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.48569
Iter 8/10: OSS cache speed: 2.60587
Iter 8/10: ladvise speed: 2.71465
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.52813
Iter 9/10: OSS cache speed: 2.6161
Iter 9/10: ladvise speed: 2.67572
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.66135
Iter 10/10: OSS cache speed: 2.64488
Iter 10/10: ladvise speed: 2.12271
Average uncached read: 2.60
Average speedup with OSS cached read:  2.62 = +0%
Average speedup with ladvise willread:  2.51 = +-3%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0