== sanity test 255a: check 'lfs ladvise -a willread' ===== 03:28:45 (1789457325)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.577 s, 8.3 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-ffff9590c55f1800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.487223
Iter 1/10: OSS cache speed: 0.487977
Iter 1/10: ladvise speed: 0.460047
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.506381
Iter 2/10: OSS cache speed: 0.536214
Iter 2/10: ladvise speed: 0.416492
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.395211
Iter 3/10: OSS cache speed: 0.448895
Iter 3/10: ladvise speed: 0.452251
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.385312
Iter 4/10: OSS cache speed: 0.429013
Iter 4/10: ladvise speed: 0.42075
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.460668
Iter 5/10: OSS cache speed: 0.462361
Iter 5/10: ladvise speed: 0.402015
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.407666
Iter 6/10: OSS cache speed: 0.346305
Iter 6/10: ladvise speed: 0.477095
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.439776
Iter 7/10: OSS cache speed: 0.417837
Iter 7/10: ladvise speed: 0.434608
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.394471
Iter 8/10: OSS cache speed: 0.505725
Iter 8/10: ladvise speed: 0.404153
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.463938
Iter 9/10: OSS cache speed: 0.399502
Iter 9/10: ladvise speed: 0.394524
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.419514
Iter 10/10: OSS cache speed: 0.36425
Iter 10/10: ladvise speed: 0.340255
Average uncached read: .43
Average speedup with OSS cached read:  .43 = +0%
Average speedup with ladvise willread:  .42 = +-2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0