== sanity test 255a: check 'lfs ladvise -a willread' ===== 05:53:14 (1726825994)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 3.80397 s, 27.6 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-ffff8800ad40a000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.775519
Iter 1/10: OSS cache speed: 0.71699
Iter 1/10: ladvise speed: 0.854453
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.864899
Iter 2/10: OSS cache speed: 0.920124
Iter 2/10: ladvise speed: 0.825511
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.844685
Iter 3/10: OSS cache speed: 0.994805
Iter 3/10: ladvise speed: 0.94403
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.983402
Iter 4/10: OSS cache speed: 1.00743
Iter 4/10: ladvise speed: 0.828705
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.885881
Iter 5/10: OSS cache speed: 0.895754
Iter 5/10: ladvise speed: 0.863819
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.775886
Iter 6/10: OSS cache speed: 0.736461
Iter 6/10: ladvise speed: 0.842659
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.819875
Iter 7/10: OSS cache speed: 0.723806
Iter 7/10: ladvise speed: 0.871332
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.914071
Iter 8/10: OSS cache speed: 0.900454
Iter 8/10: ladvise speed: 0.710797
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.837784
Iter 9/10: OSS cache speed: 0.846264
Iter 9/10: ladvise speed: 0.877289
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.877804
Iter 10/10: OSS cache speed: 0.787483
Iter 10/10: ladvise speed: 0.773437
Average uncached read: .85
Average speedup with OSS cached read: .85 = +0%
Average speedup with ladvise willread: .83 = +-2.35%
Speedup with OSS cached read less than 20%, got 0%. Skipping ladvise willread check.
fail_loc=0