== sanity test 255a: check 'lfs ladvise -a willread' ===== 14:36:12 (1787855772)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.0401 s, 9.5 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-ffff9d9b87c57000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.451804
Iter 1/10: OSS cache speed: 0.46605
Iter 1/10: ladvise speed: 0.394468
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.44482
Iter 2/10: OSS cache speed: 0.435059
Iter 2/10: ladvise speed: 0.455143
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.348413
Iter 3/10: OSS cache speed: 0.427803
Iter 3/10: ladvise speed: 0.434079
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.414888
Iter 4/10: OSS cache speed: 0.411587
Iter 4/10: ladvise speed: 0.430155
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.44471
Iter 5/10: OSS cache speed: 0.437472
Iter 5/10: ladvise speed: 0.42913
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.433893
Iter 6/10: OSS cache speed: 0.39716
Iter 6/10: ladvise speed: 0.460818
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.446088
Iter 7/10: OSS cache speed: 0.391557
Iter 7/10: ladvise speed: 0.452167
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.44061
Iter 8/10: OSS cache speed: 0.426617
Iter 8/10: ladvise speed: 0.440846
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.414326
Iter 9/10: OSS cache speed: 0.43676
Iter 9/10: ladvise speed: 0.39051
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.396646
Iter 10/10: OSS cache speed: 0.406024
Iter 10/10: ladvise speed: 0.391388
Average uncached read: .42
Average speedup with OSS cached read:  .42 = +0%
Average speedup with ladvise willread:  .42 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0