== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:17:45 (1708827465)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.20567 s, 47.5 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: 2.80561
Iter 1/10: OSS cache speed: 2.91627
Iter 1/10: ladvise speed: 1.45403
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.89271
Iter 2/10: OSS cache speed: 2.22999
Iter 2/10: ladvise speed: 1.93956
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.13127
Iter 3/10: OSS cache speed: 2.12784
Iter 3/10: ladvise speed: 2.95769
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.61204
Iter 4/10: OSS cache speed: 2.59623
Iter 4/10: ladvise speed: 2.54329
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.54436
Iter 5/10: OSS cache speed: 2.60449
Iter 5/10: ladvise speed: 2.358
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.68355
Iter 6/10: OSS cache speed: 2.82026
Iter 6/10: ladvise speed: 2.59635
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.55134
Iter 7/10: OSS cache speed: 2.86026
Iter 7/10: ladvise speed: 2.71281
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.62493
Iter 8/10: OSS cache speed: 2.48169
Iter 8/10: ladvise speed: 2.51119
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.71281
Iter 9/10: OSS cache speed: 2.62287
Iter 9/10: ladvise speed: 2.4616
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.27841
Iter 10/10: OSS cache speed: 2.56147
Iter 10/10: ladvise speed: 2.52759
Average uncached read: 2.48
Average speedup with OSS cached read: 2.58 = +4.03%
Average speedup with ladvise willread: 2.40 = +-3.22%
Speedup with OSS cached read less than 20%, got 4.03%. Skipping ladvise willread check.
fail_loc=0