== sanity test 101a: check read-ahead for random reads === 10:06:23 (1786629983) nreads: 10000 file size: 96MB 181.026356s, 3.44141MB/s osc.lustre-OST0000-osc-ffff93b39203c800.rpc_stats= snapshot_time: 1786630192.099547738 secs.nsecs start_time: 1786629985.459563370 secs.nsecs elapsed_time: 206.639984368 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: 1 0 0 | 1 3 3 2: 0 0 0 | 0 0 3 4: 0 0 0 | 0 0 3 8: 8 0 0 | 0 0 3 16: 6204 99 100 | 0 0 3 32: 0 0 100 | 0 0 3 64: 0 0 100 | 0 0 3 128: 0 0 100 | 0 0 3 256: 0 0 100 | 0 0 3 512: 0 0 100 | 0 0 3 1024: 0 0 100 | 25 96 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6213 100 100 | 26 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 2 7 7 1: 0 0 0 | 0 0 7 2: 0 0 0 | 0 0 7 4: 0 0 0 | 0 0 7 8: 0 0 0 | 0 0 7 16: 5 0 0 | 0 0 7 32: 8 0 0 | 0 0 7 64: 19 0 0 | 0 0 7 128: 30 0 1 | 0 0 7 256: 65 1 2 | 0 0 7 512: 128 2 4 | 0 0 7 1024: 238 3 8 | 1 3 11 2048: 524 8 16 | 2 7 19 4096: 1015 16 32 | 4 15 34 8192: 2037 32 65 | 8 30 65 16384: 2138 34 100 | 9 34 100 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: 473 7 7 | 0 0 0 8192: 3553 57 64 | 0 0 0 16384: 1920 30 95 | 0 0 0 32768: 394 6 102 | 3 11 11 65536: 21 0 102 | 15 57 69 131072: 0 0 102 | 7 26 96 262144: 0 0 102 | 1 3 100 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-ffff93b39203c800.rpc_stats= snapshot_time: 1786630192.099680731 secs.nsecs start_time: 1786629985.459597790 secs.nsecs elapsed_time: 206.640082941 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 | 3 75 75 2: 0 0 0 | 0 0 75 4: 0 0 0 | 0 0 75 8: 0 0 0 | 1 25 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 2 50 50 2: 0 0 0 | 1 25 75 3: 0 0 0 | 1 25 100 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 4 100 100 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: 0 0 0 | 0 0 0 8192: 0 0 0 | 1 25 25 16384: 0 0 0 | 0 0 25 32768: 0 0 0 | 3 75 100 llite.lustre-ffff93b39203c800.read_ahead_stats= snapshot_time 1786630192.120599747 secs.nsecs start_time 1786629985.496528610 secs.nsecs elapsed_time 206.624071137 secs.nsecs hits 93054 samples [pages] misses 6213 samples [pages] readpage_not_consecutive 9499 samples [pages] zero_size_window 93055 samples [pages] failed_to_fast_read 6213 samples [pages] readahead_pages 6212 samples [pages] 6 15 93054