== sanity test 255a: check 'lfs ladvise -a willread' ===== 04:58:48 (1715331528)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 4.53244 s, 23.1 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
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.0490556
Iter 1/10: OSS cache speed: 0.17554
Iter 1/10: ladvise speed: 0.0243
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.106507
Iter 2/10: OSS cache speed: 0.0750143
Iter 2/10: ladvise speed: 0.029794
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.333968
Iter 3/10: OSS cache speed: 0.0443177
Iter 3/10: ladvise speed: 0.310565
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.21364
Iter 4/10: OSS cache speed: 0.171151
Iter 4/10: ladvise speed: 0.126525
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.070231
Iter 5/10: OSS cache speed: 0.268675
Iter 5/10: ladvise speed: 0.0636353
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.0639533
Iter 6/10: OSS cache speed: 0.247805
Iter 6/10: ladvise speed: 0.374108
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.521694
Iter 7/10: OSS cache speed: 0.395929
Iter 7/10: ladvise speed: 0.306421
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.538484
Iter 8/10: OSS cache speed: 0.3712
Iter 8/10: ladvise speed: 0.575491
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.16907
Iter 9/10: OSS cache speed: 1.29344
Iter 9/10: ladvise speed: 1.06179
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.783372
Iter 10/10: OSS cache speed: 0.718733
Iter 10/10: ladvise speed: 1.01295
Average uncached read: .38
Average speedup with OSS cached read: .37 = +-2.63%
Average speedup with ladvise willread: .38 = +0%
Speedup with OSS cached read less than 20%, got -2.63%. Skipping ladvise willread check.
fail_loc=0