== sanity test 255a: check 'lfs ladvise -a willread' ===== 19:07:29 (1746140849)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 7.20535 s, 14.6 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-ffff88012d4aa000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.585093
Iter 1/10: OSS cache speed: 0.587332
Iter 1/10: ladvise speed: 0.618395
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.606521
Iter 2/10: OSS cache speed: 0.587035
Iter 2/10: ladvise speed: 0.627327
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.652962
Iter 3/10: OSS cache speed: 0.627039
Iter 3/10: ladvise speed: 0.629516
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.619787
Iter 4/10: OSS cache speed: 0.698137
Iter 4/10: ladvise speed: 0.629933
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.598096
Iter 5/10: OSS cache speed: 0.602415
Iter 5/10: ladvise speed: 0.616014
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.661056
Iter 6/10: OSS cache speed: 0.644585
Iter 6/10: ladvise speed: 0.594859
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.561584
Iter 7/10: OSS cache speed: 0.623432
Iter 7/10: ladvise speed: 0.561113
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.625657
Iter 8/10: OSS cache speed: 0.578924
Iter 8/10: ladvise speed: 0.601616
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.607498
Iter 9/10: OSS cache speed: 0.603195
Iter 9/10: ladvise speed: 0.59505
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.574051
Iter 10/10: OSS cache speed: 0.544264
Iter 10/10: ladvise speed: 0.555338
Average uncached read: .60
Average speedup with OSS cached read:  .60 = +0%
Average speedup with ladvise willread:  .60 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0