== sanity test 255a: check 'lfs ladvise -a willread' ===== 10:12:15 (1787062335)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 5.82619 s, 18.0 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-ffff9b8248d89000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.93574
Iter 1/10: OSS cache speed: 1.98082
Iter 1/10: ladvise speed: 2.03497
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.20422
Iter 2/10: OSS cache speed: 2.25425
Iter 2/10: ladvise speed: 2.12317
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.18502
Iter 3/10: OSS cache speed: 2.05472
Iter 3/10: ladvise speed: 1.94556
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.97958
Iter 4/10: OSS cache speed: 2.04272
Iter 4/10: ladvise speed: 1.99547
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.95849
Iter 5/10: OSS cache speed: 2.03496
Iter 5/10: ladvise speed: 2.07265
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.0845
Iter 6/10: OSS cache speed: 2.04383
Iter 6/10: ladvise speed: 2.08639
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.11923
Iter 7/10: OSS cache speed: 2.07012
Iter 7/10: ladvise speed: 2.02185
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.09091
Iter 8/10: OSS cache speed: 2.12781
Iter 8/10: ladvise speed: 2.06363
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.06029
Iter 9/10: OSS cache speed: 2.1214
Iter 9/10: ladvise speed: 2.10337
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.08494
Iter 10/10: OSS cache speed: 2.10762
Iter 10/10: ladvise speed: 2.05928
Average uncached read: 2.07
Average speedup with OSS cached read:  2.08 = +0%
Average speedup with ladvise willread:  2.05 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0