== sanity test 255a: check 'lfs ladvise -a willread' ===== 22:45:43 (1747795543)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.54893 s, 41.1 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-ffff8800b6315000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.36017
Iter 1/10: OSS cache speed: 1.52932
Iter 1/10: ladvise speed: 1.56766
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.7869
Iter 2/10: OSS cache speed: 1.59591
Iter 2/10: ladvise speed: 1.57394
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.34235
Iter 3/10: OSS cache speed: 1.54668
Iter 3/10: ladvise speed: 1.55883
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.37376
Iter 4/10: OSS cache speed: 1.57649
Iter 4/10: ladvise speed: 1.58891
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.39452
Iter 5/10: OSS cache speed: 1.58909
Iter 5/10: ladvise speed: 1.56118
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.35354
Iter 6/10: OSS cache speed: 1.57437
Iter 6/10: ladvise speed: 1.59846
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.34041
Iter 7/10: OSS cache speed: 1.79457
Iter 7/10: ladvise speed: 1.61956
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.35471
Iter 8/10: OSS cache speed: 1.57681
Iter 8/10: ladvise speed: 1.65412
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.44767
Iter 9/10: OSS cache speed: 1.57785
Iter 9/10: ladvise speed: 1.5865
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.35241
Iter 10/10: OSS cache speed: 1.54493
Iter 10/10: ladvise speed: 1.59242
Average uncached read: 1.41
Average speedup with OSS cached read:  1.59 = +12%
Average speedup with ladvise willread:  1.59 = +12%
Speedup with OSS cached read less than 20%,  got 12%. Skipping ladvise willread check.
fail_loc=0