== sanity test 255a: check 'lfs ladvise -a willread' ===== 09:28:47 (1761312527)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 1.62254 s, 64.6 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=4
fail_loc=0x237
Asynchronous ladvise shouldn't wait
fail_loc=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.756031
Iter 1/10: OSS cache speed: 0.918774
Iter 1/10: ladvise speed: 0.851279
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.809018
Iter 2/10: OSS cache speed: 1.03967
Iter 2/10: ladvise speed: 0.996282
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.988127
Iter 3/10: OSS cache speed: 1.03226
Iter 3/10: ladvise speed: 1.04543
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.819803
Iter 4/10: OSS cache speed: 0.79466
Iter 4/10: ladvise speed: 0.917602
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.671189
Iter 5/10: OSS cache speed: 0.91106
Iter 5/10: ladvise speed: 0.912603
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.786757
Iter 6/10: OSS cache speed: 0.852573
Iter 6/10: ladvise speed: 0.843082
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.564382
Iter 7/10: OSS cache speed: 0.939363
Iter 7/10: ladvise speed: 0.696009
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.591969
Iter 8/10: OSS cache speed: 0.747885
Iter 8/10: ladvise speed: 0.851177
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.67336
Iter 9/10: OSS cache speed: 0.715152
Iter 9/10: ladvise speed: 0.686831
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.60198
Iter 10/10: OSS cache speed: 0.584712
Iter 10/10: ladvise speed: 0.780679
Average uncached read: .72
Average speedup with OSS cached read:  .85 = +18.05%
Average speedup with ladvise willread:  .85 = +18.05%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21871: @êõ¶eU: < 20 : syntax error: operand expected (error token is "< 20 ")
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21885:   >  : >  : syntax error: operand expected (error token is ">  ")
running in VM 'kvm', ignore error
 sanity test_255a: @@@@@@ IGNORE (env=kvm): Speedup with willread is less than  .42%, got .85% 
  Trace dump:
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6498:error_ignore()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6513:error_not_in_vm()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21886:ladvise_willread_performance()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21967:test_255a()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6840:run_one()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6887:run_one_logged()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6713:run_test()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21969:main()