== sanity test 255a: check 'lfs ladvise -a willread' ===== 02:18:34 (1788848314)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.311 s, 8.5 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-ffff895a50d0b800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.43519
Iter 1/10: OSS cache speed: 0.396293
Iter 1/10: ladvise speed: 0.290111
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.339645
Iter 2/10: OSS cache speed: 0.360148
Iter 2/10: ladvise speed: 0.358129
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.35567
Iter 3/10: OSS cache speed: 0.368294
Iter 3/10: ladvise speed: 0.397812
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.421478
Iter 4/10: OSS cache speed: 0.420237
Iter 4/10: ladvise speed: 0.351901
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.384918
Iter 5/10: OSS cache speed: 0.417183
Iter 5/10: ladvise speed: 0.502921
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.429805
Iter 6/10: OSS cache speed: 0.439208
Iter 6/10: ladvise speed: 0.486836
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.490535
Iter 7/10: OSS cache speed: 0.424827
Iter 7/10: ladvise speed: 0.469749
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.436513
Iter 8/10: OSS cache speed: 0.452256
Iter 8/10: ladvise speed: 0.44373
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.516014
Iter 9/10: OSS cache speed: 0.492923
Iter 9/10: ladvise speed: 0.498796
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.488876
Iter 10/10: OSS cache speed: 0.485979
Iter 10/10: ladvise speed: 0.556215
Average uncached read: .42
Average speedup with OSS cached read:  .42 = +0%
Average speedup with ladvise willread:  .43 = +2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0