== sanity test 255a: check 'lfs ladvise -a willread' ===== 23:20:44 (1717557644)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 0.235654 s, 445 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-ffff8800b5ca6000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.93575
Iter 1/10: OSS cache speed: 3.09646
Iter 1/10: ladvise speed: 2.66095
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.75308
Iter 2/10: OSS cache speed: 2.6275
Iter 2/10: ladvise speed: 2.72641
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.56789
Iter 3/10: OSS cache speed: 2.65784
Iter 3/10: ladvise speed: 2.53329
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.53976
Iter 4/10: OSS cache speed: 2.83015
Iter 4/10: ladvise speed: 2.64542
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.57027
Iter 5/10: OSS cache speed: 2.61447
Iter 5/10: ladvise speed: 2.65963
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.68932
Iter 6/10: OSS cache speed: 2.6347
Iter 6/10: ladvise speed: 2.55767
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.6043
Iter 7/10: OSS cache speed: 2.69786
Iter 7/10: ladvise speed: 2.78219
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.74392
Iter 8/10: OSS cache speed: 2.68842
Iter 8/10: ladvise speed: 4.63363
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 4.60649
Iter 9/10: OSS cache speed: 5.07268
Iter 9/10: ladvise speed: 5.17171
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 4.28431
Iter 10/10: OSS cache speed: 2.72131
Iter 10/10: ladvise speed: 2.46758
Average uncached read: 3.02
Average speedup with OSS cached read: 2.96 = +-1.98%
Average speedup with ladvise willread: 3.08 = +1.98%
Speedup with OSS cached read less than 20%, got -1.98%. Skipping ladvise willread check.
fail_loc=0