== sanity test 255a: check 'lfs ladvise -a willread' ===== 08:47:22 (1787316442)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.0054 s, 8.7 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-ffff89dc05554800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.345788
Iter 1/10: OSS cache speed: 0.400964
Iter 1/10: ladvise speed: 0.384308
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.428579
Iter 2/10: OSS cache speed: 0.428676
Iter 2/10: ladvise speed: 0.442838
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.401563
Iter 3/10: OSS cache speed: 0.347794
Iter 3/10: ladvise speed: 0.40486
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.452221
Iter 4/10: OSS cache speed: 0.433772
Iter 4/10: ladvise speed: 0.429262
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.433531
Iter 5/10: OSS cache speed: 0.453791
Iter 5/10: ladvise speed: 0.414543
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.419521
Iter 6/10: OSS cache speed: 0.459419
Iter 6/10: ladvise speed: 0.491768
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.461332
Iter 7/10: OSS cache speed: 0.424596
Iter 7/10: ladvise speed: 0.44814
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.370451
Iter 8/10: OSS cache speed: 0.405634
Iter 8/10: ladvise speed: 0.440384
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.466723
Iter 9/10: OSS cache speed: 0.45515
Iter 9/10: ladvise speed: 0.495179
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.504133
Iter 10/10: OSS cache speed: 0.479227
Iter 10/10: ladvise speed: 0.421091
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