== sanity test 101a: check read-ahead for random reads === 01:33:10 (1786339990) nreads: 10000 file size: 96MB 180.490181s, 3.0032MB/s osc.lustre-OST0000-osc-ffff9904429af000.rpc_stats= snapshot_time: 1786340193.142185767 secs.nsecs start_time: 1786339992.412096742 secs.nsecs elapsed_time: 200.730089025 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 2: 2 0 0 | 0 0 0 4: 1 0 0 | 0 0 0 8: 3 0 0 | 0 0 0 16: 5424 99 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 0 0 0 256: 0 0 100 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 25 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 5430 100 100 | 25 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 5 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 5 0 0 | 0 0 4 32: 7 0 0 | 0 0 4 64: 15 0 0 | 0 0 4 128: 23 0 1 | 0 0 4 256: 55 1 2 | 0 0 4 512: 115 2 4 | 0 0 4 1024: 197 3 7 | 1 4 8 2048: 470 8 16 | 2 8 16 4096: 893 16 32 | 4 16 32 8192: 1777 32 65 | 8 32 64 16384: 1868 34 100 | 9 36 100 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 1: 0 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 0 0 0 | 0 0 0 16: 0 0 0 | 0 0 0 32: 0 0 0 | 0 0 0 64: 0 0 0 | 0 0 0 128: 0 0 0 | 0 0 0 256: 0 0 0 | 0 0 0 512: 0 0 0 | 0 0 0 1024: 0 0 0 | 0 0 0 2048: 0 0 0 | 0 0 0 4096: 252 4 4 | 0 0 0 8192: 2851 52 57 | 0 0 0 16384: 1926 35 92 | 0 0 0 32768: 496 9 101 | 4 16 16 65536: 32 0 102 | 15 60 76 131072: 0 0 102 | 6 24 100 262144: 0 0 102 | 0 0 100 524288: 0 0 102 | 0 0 100 1048576: 0 0 102 | 0 0 100 2097152: 0 0 102 | 0 0 100 4194304: 0 0 102 | 0 0 100 8388608: 0 0 102 | 0 0 100 16777216: 0 0 102 | 0 0 100 33554432: 0 0 102 | 0 0 100 67108864: 0 0 102 | 0 0 100 134217728: 0 0 102 | 0 0 100 268435456: 0 0 102 | 0 0 100 536870912: 0 0 102 | 0 0 100 1073741824: 0 0 102 | 0 0 100 osc.lustre-OST0001-osc-ffff9904429af000.rpc_stats= snapshot_time: 1786340193.142367677 secs.nsecs start_time: 1786339992.412149088 secs.nsecs elapsed_time: 200.730218589 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 DIO RPCs in flight: 0 pending write pages: 0 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 0 0 0 read write RPC latency (us) count % cum % | count % cum % 0: 0 0 0 | 0 0 0 llite.lustre-ffff9904429af000.read_ahead_stats= snapshot_time 1786340193.185273863 secs.nsecs start_time 1786339992.441632856 secs.nsecs elapsed_time 200.743641007 secs.nsecs hits 81334 samples [pages] misses 5430 samples [pages] readpage_not_consecutive 8266 samples [pages] zero_size_window 81334 samples [pages] failed_to_fast_read 5430 samples [pages] readahead_pages 5430 samples [pages] 1 15 81334