== sanity test 255a: check 'lfs ladvise -a willread' ===== 11:36:34 (1782228994)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.6362 s, 8.3 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-ffff9b16c387b800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.356445
Iter 1/10: OSS cache speed: 0.290849
Iter 1/10: ladvise speed: 0.301693
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.276011
Iter 2/10: OSS cache speed: 0.305568
Iter 2/10: ladvise speed: 0.277348
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.294747
Iter 3/10: OSS cache speed: 0.327746
Iter 3/10: ladvise speed: 0.373123
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.329513
Iter 4/10: OSS cache speed: 0.320259
Iter 4/10: ladvise speed: 0.327419
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.326186
Iter 5/10: OSS cache speed: 0.377612
Iter 5/10: ladvise speed: 0.328992
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.357502
Iter 6/10: OSS cache speed: 0.35875
Iter 6/10: ladvise speed: 0.335485
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.338548
Iter 7/10: OSS cache speed: 0.312066
Iter 7/10: ladvise speed: 0.307035
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.301935
Iter 8/10: OSS cache speed: 0.28607
Iter 8/10: ladvise speed: 0.294433
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.288031
Iter 9/10: OSS cache speed: 0.294211
Iter 9/10: ladvise speed: 0.33858
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.335631
Iter 10/10: OSS cache speed: 0.345047
Iter 10/10: ladvise speed: 0.368407
Average uncached read: .32
Average speedup with OSS cached read:  .32 = +0%
Average speedup with ladvise willread:  .32 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0