== sanity test 255a: check 'lfs ladvise -a willread' ===== 00:40:54 (1735364454)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.53296 s, 41.4 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-ffff88012b72a800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.33581
Iter 1/10: OSS cache speed: 1.38013
Iter 1/10: ladvise speed: 1.39391
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.3632
Iter 2/10: OSS cache speed: 1.38017
Iter 2/10: ladvise speed: 1.37618
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.34565
Iter 3/10: OSS cache speed: 1.35478
Iter 3/10: ladvise speed: 1.38606
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.36067
Iter 4/10: OSS cache speed: 1.38476
Iter 4/10: ladvise speed: 1.36827
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.3932
Iter 5/10: OSS cache speed: 1.36183
Iter 5/10: ladvise speed: 1.38417
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.36851
Iter 6/10: OSS cache speed: 1.34103
Iter 6/10: ladvise speed: 1.38159
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.39444
Iter 7/10: OSS cache speed: 1.4114
Iter 7/10: ladvise speed: 1.41037
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.4037
Iter 8/10: OSS cache speed: 1.3895
Iter 8/10: ladvise speed: 1.37509
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.39169
Iter 9/10: OSS cache speed: 1.36991
Iter 9/10: ladvise speed: 1.40042
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.38044
Iter 10/10: OSS cache speed: 1.4011
Iter 10/10: ladvise speed: 1.411
Average uncached read: 1.37
Average speedup with OSS cached read:  1.37 = +0%
Average speedup with ladvise willread:  1.38 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0