== sanity test 255a: check 'lfs ladvise -a willread' ===== 02:47:41 (1789368461)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 5.40618 s, 19.4 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-ffff8d5984ac5000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.27974
Iter 1/10: OSS cache speed: 2.31684
Iter 1/10: ladvise speed: 2.24815
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.30849
Iter 2/10: OSS cache speed: 2.24483
Iter 2/10: ladvise speed: 2.2943
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.28667
Iter 3/10: OSS cache speed: 2.37319
Iter 3/10: ladvise speed: 2.32663
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.36533
Iter 4/10: OSS cache speed: 2.13969
Iter 4/10: ladvise speed: 2.28577
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.3777
Iter 5/10: OSS cache speed: 2.29724
Iter 5/10: ladvise speed: 2.25091
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.30759
Iter 6/10: OSS cache speed: 2.21666
Iter 6/10: ladvise speed: 2.30335
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.35724
Iter 7/10: OSS cache speed: 2.27111
Iter 7/10: ladvise speed: 2.30766
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.26518
Iter 8/10: OSS cache speed: 2.26813
Iter 8/10: ladvise speed: 2.1553
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.18059
Iter 9/10: OSS cache speed: 1.90262
Iter 9/10: ladvise speed: 2.13919
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.04799
Iter 10/10: OSS cache speed: 2.3705
Iter 10/10: ladvise speed: 2.28584
Average uncached read: 2.27
Average speedup with OSS cached read:  2.24 = +-1%
Average speedup with ladvise willread:  2.25 = +0%
Speedup with OSS cached read less than 20%,  got -1%. Skipping ladvise willread check.
fail_loc=0