On Mon, Oct 8, 2012 at 3:33 PM, Evgeny Shishkin <itparanoia@xxxxxxxxx> wrote:
The old server is in production and is running Apache/Postgres requests.
Craig
On Oct 9, 2012, at 1:45 AM, Craig James <cjames@xxxxxxxxxxxxxx> wrote:One dramatic difference I noted via vmstat. On the old server, the I/O load during the bonnie++ run was steady, like this:
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
r b swpd free buff cache si so bi bo in cs us sy id wa
0 2 71800 2117612 17940 9375660 0 0 82948 81944 1992 1341 1 3 86 10
0 2 71800 2113328 17948 9383896 0 0 76288 75806 1751 1167 0 2 86 11
0 1 71800 2111004 17948 9386540 92 0 93324 94232 2230 1510 0 4 86 10
0 1 71800 2106796 17948 9387436 114 0 67698 67588 1572 1088 0 2 87 11
0 1 71800 2106724 17956 9387968 50 0 81970 85710 1918 1287 0 3 86 10
1 1 71800 2103304 17956 9390700 0 0 92096 92160 1970 1194 0 4 86 10
0 2 71800 2103196 17976 9389204 0 0 70722 69680 1655 1116 1 3 86 10
1 1 71800 2099064 17980 9390824 0 0 57346 57348 1357 949 0 2 87 11
0 1 71800 2095596 17980 9392720 0 0 57344 57348 1379 987 0 2 86 12
But the new server varied wildly during bonnie++:
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
0 1 0 4518352 12004 7167000 0 0 118894 120838 2613 1539 0 2 93 5
0 1 0 4517252 12004 7167824 0 0 52116 53248 1179 793 0 1 94 5
0 1 0 4515864 12004 7169088 0 0 46764 49152 1104 733 0 1 91 7
0 1 0 4515180 12012 7169764 0 0 32924 30724 750 542 0 1 93 6
0 1 0 4514328 12016 7170780 0 0 42188 45056 1019 664 0 1 90 9
0 1 0 4513072 12016 7171856 0 0 67528 65540 1487 993 0 1 96 4
0 1 0 4510852 12016 7173160 0 0 56876 57344 1358 942 0 1 94 5
0 1 0 4500280 12044 7179924 0 0 91564 94220 2505 2504 1 2 91 6
0 1 0 4495564 12052 7183492 0 0 102660 104452 2289 1473 0 2 92 6
0 1 0 4492092 12052 7187720 0 0 98498 96274 2140 1385 0 2 93 5
0 1 0 4488608 12060 7190772 0 0 97628 100358 2176 1398 0 1 94 4
1 0 0 4485880 12052 7192600 0 0 112406 114686 2461 1509 0 3 90 7
1 0 0 4483424 12052 7195612 0 0 64678 65536 1449 948 0 1 91 8
0 1 0 4480252 12052 7199404 0 0 99608 100356 2217 1452 0 1 96 3
Also note the difference in free/cache distribution. Unless you took these numbers in completely different stages of bonnie++.
The old server is in production and is running Apache/Postgres requests.
Craig
