== sanity test 255a: check 'lfs ladvise -a willread' ===== 04:04:12 (1788595452)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.8445 s, 8.9 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-ffff988a903a4800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.53106
Iter 1/10: OSS cache speed: 0.447635
Iter 1/10: ladvise speed: 0.397526
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.397957
Iter 2/10: OSS cache speed: 0.388039
Iter 2/10: ladvise speed: 0.360668
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.413948
Iter 3/10: OSS cache speed: 0.449741
Iter 3/10: ladvise speed: 0.422227
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.454709
Iter 4/10: OSS cache speed: 0.380567
Iter 4/10: ladvise speed: 0.390588
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.472324
Iter 5/10: OSS cache speed: 0.44816
Iter 5/10: ladvise speed: 0.356081
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.397337
Iter 6/10: OSS cache speed: 0.443595
Iter 6/10: ladvise speed: 0.37728
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.340868
Iter 7/10: OSS cache speed: 0.46844
Iter 7/10: ladvise speed: 0.465789
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.377158
Iter 8/10: OSS cache speed: 0.371498
Iter 8/10: ladvise speed: 0.366327
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.346966
Iter 9/10: OSS cache speed: 0.395114
Iter 9/10: ladvise speed: 0.435867
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.473798
Iter 10/10: OSS cache speed: 0.454426
Iter 10/10: ladvise speed: 0.481054
Average uncached read: .42
Average speedup with OSS cached read:  .42 = +0%
Average speedup with ladvise willread:  .40 = +-4%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0