== sanity test 255a: check 'lfs ladvise -a willread' ===== 13:30:16 (1763404216)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 10.1953 s, 10.3 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-ffff94aac50ec000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.385145
Iter 1/10: OSS cache speed: 0.373699
Iter 1/10: ladvise speed: 0.375256
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.321048
Iter 2/10: OSS cache speed: 0.40608
Iter 2/10: ladvise speed: 0.371606
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.357159
Iter 3/10: OSS cache speed: 0.381824
Iter 3/10: ladvise speed: 0.391098
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.40832
Iter 4/10: OSS cache speed: 0.402391
Iter 4/10: ladvise speed: 0.43298
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.415454
Iter 5/10: OSS cache speed: 0.420264
Iter 5/10: ladvise speed: 0.470823
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.450868
Iter 6/10: OSS cache speed: 0.34649
Iter 6/10: ladvise speed: 0.445063
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.38132
Iter 7/10: OSS cache speed: 0.418898
Iter 7/10: ladvise speed: 0.401617
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.421995
Iter 8/10: OSS cache speed: 0.442636
Iter 8/10: ladvise speed: 0.440405
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.442127
Iter 9/10: OSS cache speed: 0.409893
Iter 9/10: ladvise speed: 0.443317
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.394554
Iter 10/10: OSS cache speed: 0.346447
Iter 10/10: ladvise speed: 0.370442
Average uncached read: .39
Average speedup with OSS cached read:  .39 = +0%
Average speedup with ladvise willread:  .41 = +5%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0