== sanity test 255a: check 'lfs ladvise -a willread' ===== 05:00:01 (1788512401)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 14.3757 s, 7.3 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-ffff9edad8ddb800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.31112
Iter 1/10: OSS cache speed: 0.26403
Iter 1/10: ladvise speed: 0.304435
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.265059
Iter 2/10: OSS cache speed: 0.219519
Iter 2/10: ladvise speed: 0.226887
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.262771
Iter 3/10: OSS cache speed: 0.257426
Iter 3/10: ladvise speed: 0.234826
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.273176
Iter 4/10: OSS cache speed: 0.281942
Iter 4/10: ladvise speed: 0.267686
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.186148
Iter 5/10: OSS cache speed: 0.257472
Iter 5/10: ladvise speed: 0.311418
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.275011
Iter 6/10: OSS cache speed: 0.249964
Iter 6/10: ladvise speed: 0.277143
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.229004
Iter 7/10: OSS cache speed: 0.292457
Iter 7/10: ladvise speed: 0.30592
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.309941
Iter 8/10: OSS cache speed: 0.308744
Iter 8/10: ladvise speed: 0.288449
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.301738
Iter 9/10: OSS cache speed: 0.307303
Iter 9/10: ladvise speed: 0.295572
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.301819
Iter 10/10: OSS cache speed: 0.300653
Iter 10/10: ladvise speed: 0.279403
Average uncached read: .27
Average speedup with OSS cached read:  .27 = +0%
Average speedup with ladvise willread:  .27 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0