== sanity test 255a: check 'lfs ladvise -a willread' ===== 05:51:55 (1726825915)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 3.15988 s, 33.2 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-ffff88013767c800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.16129
Iter 1/10: OSS cache speed: 1.05598
Iter 1/10: ladvise speed: 1.1933
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.0106
Iter 2/10: OSS cache speed: 1.08511
Iter 2/10: ladvise speed: 1.07376
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.994306
Iter 3/10: OSS cache speed: 1.11288
Iter 3/10: ladvise speed: 1.02115
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.08512
Iter 4/10: OSS cache speed: 1.04035
Iter 4/10: ladvise speed: 0.985557
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.905161
Iter 5/10: OSS cache speed: 0.939729
Iter 5/10: ladvise speed: 0.882485
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.965397
Iter 6/10: OSS cache speed: 0.933711
Iter 6/10: ladvise speed: 1.14595
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.875006
Iter 7/10: OSS cache speed: 0.967294
Iter 7/10: ladvise speed: 0.909807
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.869006
Iter 8/10: OSS cache speed: 0.965459
Iter 8/10: ladvise speed: 0.98841
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.982753
Iter 9/10: OSS cache speed: 1.11444
Iter 9/10: ladvise speed: 1.23544
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.01753
Iter 10/10: OSS cache speed: 1.13025
Iter 10/10: ladvise speed: 1.15019
Average uncached read: .98
Average speedup with OSS cached read: 1.03 = +5.10%
Average speedup with ladvise willread: 1.05 = +7.14%
Speedup with OSS cached read less than 20%, got 5.10%. Skipping ladvise willread check.
fail_loc=0