== sanity test 255a: check 'lfs ladvise -a willread' ===== 11:57:19 (1788883039)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 5.79594 s, 18.1 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-ffff99e2d3392000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.13046
Iter 1/10: OSS cache speed: 1.6177
Iter 1/10: ladvise speed: 1.84307
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.4033
Iter 2/10: OSS cache speed: 2.44655
Iter 2/10: ladvise speed: 1.28743
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.54233
Iter 3/10: OSS cache speed: 1.77914
Iter 3/10: ladvise speed: 1.47004
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.96805
Iter 4/10: OSS cache speed: 2.39628
Iter 4/10: ladvise speed: 2.2677
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.29528
Iter 5/10: OSS cache speed: 2.3971
Iter 5/10: ladvise speed: 2.33142
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.36964
Iter 6/10: OSS cache speed: 2.24301
Iter 6/10: ladvise speed: 2.22335
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.30962
Iter 7/10: OSS cache speed: 2.2434
Iter 7/10: ladvise speed: 2.46363
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.36912
Iter 8/10: OSS cache speed: 2.3748
Iter 8/10: ladvise speed: 2.21586
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.23505
Iter 9/10: OSS cache speed: 2.21555
Iter 9/10: ladvise speed: 2.15347
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.13458
Iter 10/10: OSS cache speed: 2.24467
Iter 10/10: ladvise speed: 2.20534
Average uncached read: 2.17
Average speedup with OSS cached read:  2.19 = +0%
Average speedup with ladvise willread:  2.04 = +-5%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0