== sanity test 255a: check 'lfs ladvise -a willread' ===== 08:38:45 (1788266325)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.3796 s, 9.2 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-ffff9e1fc30d6800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.343351
Iter 1/10: OSS cache speed: 0.340813
Iter 1/10: ladvise speed: 0.33474
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.343182
Iter 2/10: OSS cache speed: 0.356505
Iter 2/10: ladvise speed: 0.373192
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.335656
Iter 3/10: OSS cache speed: 0.371908
Iter 3/10: ladvise speed: 0.332799
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.354454
Iter 4/10: OSS cache speed: 0.373199
Iter 4/10: ladvise speed: 0.404112
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.372502
Iter 5/10: OSS cache speed: 0.373486
Iter 5/10: ladvise speed: 0.404951
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.387711
Iter 6/10: OSS cache speed: 0.412839
Iter 6/10: ladvise speed: 0.439624
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.51597
Iter 7/10: OSS cache speed: 0.468731
Iter 7/10: ladvise speed: 0.478118
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.4462
Iter 8/10: OSS cache speed: 0.451825
Iter 8/10: ladvise speed: 0.463103
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.452441
Iter 9/10: OSS cache speed: 0.460545
Iter 9/10: ladvise speed: 0.494084
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.554498
Iter 10/10: OSS cache speed: 0.56827
Iter 10/10: ladvise speed: 0.580409
Average uncached read: .41
Average speedup with OSS cached read:  .41 = +0%
Average speedup with ladvise willread:  .43 = +4%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0