== sanity test 255a: check 'lfs ladvise -a willread' ===== 22:48:52 (1763351332)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 10.6504 s, 9.8 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-ffff9fb258a2c800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.419878
Iter 1/10: OSS cache speed: 0.454123
Iter 1/10: ladvise speed: 0.428991
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.431241
Iter 2/10: OSS cache speed: 0.382628
Iter 2/10: ladvise speed: 0.404614
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.426274
Iter 3/10: OSS cache speed: 0.446903
Iter 3/10: ladvise speed: 0.466465
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.505491
Iter 4/10: OSS cache speed: 0.486904
Iter 4/10: ladvise speed: 0.474786
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.510586
Iter 5/10: OSS cache speed: 0.594857
Iter 5/10: ladvise speed: 0.626326
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.599951
Iter 6/10: OSS cache speed: 0.61135
Iter 6/10: ladvise speed: 0.609858
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.607639
Iter 7/10: OSS cache speed: 0.667231
Iter 7/10: ladvise speed: 0.615982
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.663567
Iter 8/10: OSS cache speed: 0.725607
Iter 8/10: ladvise speed: 0.721515
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.795654
Iter 9/10: OSS cache speed: 0.745215
Iter 9/10: ladvise speed: 0.858632
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.912406
Iter 10/10: OSS cache speed: 0.814195
Iter 10/10: ladvise speed: 0.910075
Average uncached read: .58
Average speedup with OSS cached read:  .59 = +1%
Average speedup with ladvise willread:  .61 = +5%
Speedup with OSS cached read less than 20%,  got 1%. Skipping ladvise willread check.
fail_loc=0