== sanity test 255a: check 'lfs ladvise -a willread' ===== 03:09:30 (1787468970)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 13.4412 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-ffff88d18abf3800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.277556
Iter 1/10: OSS cache speed: 0.290503
Iter 1/10: ladvise speed: 0.340113
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.254619
Iter 2/10: OSS cache speed: 0.289063
Iter 2/10: ladvise speed: 0.327423
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.297324
Iter 3/10: OSS cache speed: 0.330144
Iter 3/10: ladvise speed: 0.291776
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.349897
Iter 4/10: OSS cache speed: 0.33556
Iter 4/10: ladvise speed: 0.370244
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.343792
Iter 5/10: OSS cache speed: 0.331517
Iter 5/10: ladvise speed: 0.370686
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.424934
Iter 6/10: OSS cache speed: 0.445859
Iter 6/10: ladvise speed: 0.394676
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.361581
Iter 7/10: OSS cache speed: 0.379486
Iter 7/10: ladvise speed: 0.420788
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.393875
Iter 8/10: OSS cache speed: 0.377876
Iter 8/10: ladvise speed: 0.345865
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.386214
Iter 9/10: OSS cache speed: 0.361949
Iter 9/10: ladvise speed: 0.309954
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.310233
Iter 10/10: OSS cache speed: 0.328958
Iter 10/10: ladvise speed: 0.307235
Average uncached read: .34
Average speedup with OSS cached read:  .34 = +0%
Average speedup with ladvise willread:  .34 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0