== sanity test 255a: check 'lfs ladvise -a willread' ===== 09:08:51 (1788872931)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 14.1153 s, 7.4 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-ffff96a0ca45b800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.315864
Iter 1/10: OSS cache speed: 0.409872
Iter 1/10: ladvise speed: 0.321814
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.329344
Iter 2/10: OSS cache speed: 0.297759
Iter 2/10: ladvise speed: 0.331341
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.323765
Iter 3/10: OSS cache speed: 0.340245
Iter 3/10: ladvise speed: 0.332976
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.355397
Iter 4/10: OSS cache speed: 0.345531
Iter 4/10: ladvise speed: 0.380666
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.416686
Iter 5/10: OSS cache speed: 0.468541
Iter 5/10: ladvise speed: 0.454827
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.429612
Iter 6/10: OSS cache speed: 0.364419
Iter 6/10: ladvise speed: 0.424675
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.409887
Iter 7/10: OSS cache speed: 0.436875
Iter 7/10: ladvise speed: 0.351221
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.33635
Iter 8/10: OSS cache speed: 0.341304
Iter 8/10: ladvise speed: 0.37098
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.35733
Iter 9/10: OSS cache speed: 0.271436
Iter 9/10: ladvise speed: 0.354232
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.353412
Iter 10/10: OSS cache speed: 0.338514
Iter 10/10: ladvise speed: 0.399264
Average uncached read: .36
Average speedup with OSS cached read:  .36 = +0%
Average speedup with ladvise willread:  .37 = +2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0