Thank you for your reply. Enclosed are more accurate and consistent results:
Primary machine
avg-cpu: %user %nice %system %iowait %steal %idle
0.16 0.00 1.19 15.70 0.00 82.94
Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn
sda 37.33 24.00 985.33 72 2956
sdb 34.67 21.33 954.67 64 2864
sdd 40.33 16.00 950.67 48 2852
md0 729.33 61.33 2890.67 184 8672
Secondary machine
avg-cpu: %user %nice %system %iowait %steal %idle
0.04 0.00 0.28 0.00 0.00 99.68
Device: tps kB_read/s kB_wrtn/s kB_read kB_wrtn
sda 194.00 0.00 978.67 0 2936
sdb 199.67 0.00 990.67 0 2972
sdc 191.33 0.00 948.00 0 2844
md0 734.00 0.00 2916.00 0 8748
Would it be accurate to interpret that DRBD is issuing the same number of
requests to both servers, but for whatever reason the software RAID on
the secondary server is breaking up each request into smaller IO requests?
If so, would anyone have any suggestions on how to debug the software RAID
portion?
Thanks for everyone's time,
Chris Gouveia
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