== sanity test 255a: check 'lfs ladvise -a willread' ===== 05:58:24 (1779703104)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 19.1802 s, 5.5 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-ffff8e4ac6226000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.211742
Iter 1/10: OSS cache speed: 0.211299
Iter 1/10: ladvise speed: 0.223368
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.23911
Iter 2/10: OSS cache speed: 0.243551
Iter 2/10: ladvise speed: 0.191307
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.238896
Iter 3/10: OSS cache speed: 0.258066
Iter 3/10: ladvise speed: 0.239391
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.258924
Iter 4/10: OSS cache speed: 0.233166
Iter 4/10: ladvise speed: 0.233397
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.203787
Iter 5/10: OSS cache speed: 0.205034
Iter 5/10: ladvise speed: 0.235709
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.231493
Iter 6/10: OSS cache speed: 0.22552
Iter 6/10: ladvise speed: 0.216943
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.226343
Iter 7/10: OSS cache speed: 0.232209
Iter 7/10: ladvise speed: 0.207336
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.218468
Iter 8/10: OSS cache speed: 0.204481
Iter 8/10: ladvise speed: 0.18529
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.222364
Iter 9/10: OSS cache speed: 0.230489
Iter 9/10: ladvise speed: 0.215434
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.205797
Iter 10/10: OSS cache speed: 0.240001
Iter 10/10: ladvise speed: 0.226027
Average uncached read: .22
Average speedup with OSS cached read:  .22 = +0%
Average speedup with ladvise willread:  .21 = +-4%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0