== sanity test 255a: check 'lfs ladvise -a willread' ===== 11:43:42 (1787586222)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.3628 s, 7.8 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-ffff92b3d90e6800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.390327
Iter 1/10: OSS cache speed: 0.374859
Iter 1/10: ladvise speed: 0.363021
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.383921
Iter 2/10: OSS cache speed: 0.356792
Iter 2/10: ladvise speed: 0.396833
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.380999
Iter 3/10: OSS cache speed: 0.395092
Iter 3/10: ladvise speed: 0.394285
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.395113
Iter 4/10: OSS cache speed: 0.350689
Iter 4/10: ladvise speed: 0.368859
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.367783
Iter 5/10: OSS cache speed: 0.372206
Iter 5/10: ladvise speed: 0.304455
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.391727
Iter 6/10: OSS cache speed: 0.400161
Iter 6/10: ladvise speed: 0.400581
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.335765
Iter 7/10: OSS cache speed: 0.278751
Iter 7/10: ladvise speed: 0.358404
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.363629
Iter 8/10: OSS cache speed: 0.386243
Iter 8/10: ladvise speed: 0.367552
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.314785
Iter 9/10: OSS cache speed: 0.335034
Iter 9/10: ladvise speed: 0.357369
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.365995
Iter 10/10: OSS cache speed: 0.379597
Iter 10/10: ladvise speed: 0.363626
Average uncached read: .36
Average speedup with OSS cached read:  .36 = +0%
Average speedup with ladvise willread:  .36 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0