== sanity test 255a: check 'lfs ladvise -a willread' ===== 02:29:36 (1772177376)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 5.92025 s, 17.7 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-ffff9723854ac000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.05398
Iter 1/10: OSS cache speed: 1.0069
Iter 1/10: ladvise speed: 1.29641
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.07185
Iter 2/10: OSS cache speed: 1.10979
Iter 2/10: ladvise speed: 0.934084
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.927106
Iter 3/10: OSS cache speed: 0.945517
Iter 3/10: ladvise speed: 1.31202
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.71847
Iter 4/10: OSS cache speed: 1.81195
Iter 4/10: ladvise speed: 1.7446
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.86819
Iter 5/10: OSS cache speed: 1.80772
Iter 5/10: ladvise speed: 1.79097
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.79917
Iter 6/10: OSS cache speed: 1.8229
Iter 6/10: ladvise speed: 1.80039
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.80478
Iter 7/10: OSS cache speed: 2.00577
Iter 7/10: ladvise speed: 1.93661
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.87119
Iter 8/10: OSS cache speed: 1.73496
Iter 8/10: ladvise speed: 1.84619
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.71379
Iter 9/10: OSS cache speed: 1.80814
Iter 9/10: ladvise speed: 1.34173
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.48603
Iter 10/10: OSS cache speed: 1.69255
Iter 10/10: ladvise speed: 1.62689
Average uncached read: 1.53
Average speedup with OSS cached read:  1.57 = +2%
Average speedup with ladvise willread:  1.56 = +1%
Speedup with OSS cached read less than 20%,  got 2%. Skipping ladvise willread check.
fail_loc=0