== sanity test 255a: check 'lfs ladvise -a willread' ===== 10:28:51 (1749479331)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.51564 s, 41.7 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-ffff8800b6f13000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.75326
Iter 1/10: OSS cache speed: 2.71641
Iter 1/10: ladvise speed: 2.73675
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.71993
Iter 2/10: OSS cache speed: 2.82559
Iter 2/10: ladvise speed: 2.7458
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.74206
Iter 3/10: OSS cache speed: 2.70308
Iter 3/10: ladvise speed: 2.72169
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.72317
Iter 4/10: OSS cache speed: 2.81077
Iter 4/10: ladvise speed: 2.79445
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.41177
Iter 5/10: OSS cache speed: 2.31436
Iter 5/10: ladvise speed: 2.51396
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.43567
Iter 6/10: OSS cache speed: 2.32046
Iter 6/10: ladvise speed: 2.35411
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.21179
Iter 7/10: OSS cache speed: 2.41761
Iter 7/10: ladvise speed: 2.7179
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.48899
Iter 8/10: OSS cache speed: 2.3621
Iter 8/10: ladvise speed: 2.54171
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.17471
Iter 9/10: OSS cache speed: 2.64291
Iter 9/10: ladvise speed: 2.56968
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.25057
Iter 10/10: OSS cache speed: 1.73001
Iter 10/10: ladvise speed: 1.51478
Average uncached read: 2.49
Average speedup with OSS cached read:  2.48 = +0%
Average speedup with ladvise willread:  2.52 = +1%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0