I'm getting constantly high numbers of page reclaims & involuntary context switches for dovecot/auth.
page reclaims = minor faults = cpu switching back to system-mode, But why is the auth process doing that so excessively? Same for the large number of involuntary context switches...
Attached is my "dovecot -n" output.
Date: Sun, 07 Nov 2010 20:40:34 +0100
type real user sys reclaim faults swaps bin bout signals volcs involcs auth 205.93 1.32 2.76 25280 0 0 0 0 0 261 1425 ssl-params 288.71 0.40 0.48 468 0 0 8 0 0 8 1 pop3 0.59 0.80 0.20 651 0 0 48 16 0 12 13 managesieve 0.51 0.00 0.28 576 0 0 416 0 0 13 7 imap 4677.82 0.19 0.89 1480 0 0 488 16 0 23550 136 pop3-login 181.77 0.32 0.28 780 0 0 8 0 0 46 9
Date: Sun, 07 Nov 2010 21:00:02 +0100
type real user sys reclaim faults swaps bin bout signals volcs involcs auth 303.62 1.10 2.20 26208 0 0 0 0 0 235 1362 ssl-params 301.12 0.00 0.12 467 0 0 8 0 0 7 1 pop3 0.26 0.40 0.36 618 0 0 0 8 0 5 18 managesieve 0.53 0.00 0.28 576 0 0 352 0 0 13 7 imap 2856.91 0.12 0.46 655 0 0 0 0 0 13465 105 pop3-login 228.84 0.76 0.24 779 0 0 0 0 0 90 14
Date: Sun, 07 Nov 2010 22:00:02 +0100
type real user sys reclaim faults swaps bin bout signals volcs involcs auth 243.12 0.99 4.56 23762 0 0 0 0 0 222 1419 ssl-params 301.25 0.40 0.80 471 0 0 8 0 0 6 4 pop3 0.43 0.40 0.80 623 0 0 0 8 0 6 4 managesieve 0.43 0.00 0.20 577 0 0 536 0 0 14 7 imap 3.63 0.16 0.36 669 1 0 856 0 0 63 93 pop3-login 181.81 0.60 0.40 782 0 0 0 0 0 52 53
Date: Sun, 07 Nov 2010 23:00:02 +0100
type real user sys reclaim faults swaps bin bout signals volcs involcs auth 232.83 1.72 2.26 25613 0 0 0 0 0 254 1175 ssl-params 149.63 0.00 0.16 469 0 0 40 0 0 10 1 pop3 25.68 0.28 0.12 741 0 0 9696 16 0 109 14 managesieve 0.25 0.40 0.28 576 0 0 8 0 0 11 2 imap 0.32 0.00 0.16 625 0 0 0 0 0 11 11 pop3-login 69.88 0.48 0.24 779 0 0 0 0 0 27 6
Date: Mon, 08 Nov 2010 00:00:02 +0100
type real user sys reclaim faults swaps bin bout signals volcs involcs managesieve 0.29 0.00 0.36 576 0 0 8 0 0 7 16 imap 0.58 0.80 0.36 637 0 0 0 0 0 10 9
Date: Mon, 08 Nov 2010 01:00:01 +0100
type real user sys reclaim faults swaps bin bout signals volcs involcs auth 421.98 1.32 1.66 24216 0 0 0 0 0 267 723 ssl-params 538.47 0.00 0.16 470 0 0 8 0 0 7 1 pop3 0.19 0.80 0.96 671 1 0 760 8 0 22 221 managesieve 0.63 0.40 0.13 578 0 0 192 0 0 9 11 managesieve-lo 18616.9 86.77 32.49 319768 1 0 168 0 0 63448 48838 imap 42.28 0.00 0.52 676 0 0 0 0 0 182 63 pop3-login 361.68 0.76 0.40 780 0 0 0 0 0 52 2
Date: Mon, 08 Nov 2010 02:00:02 +0100
type real user sys reclaim faults swaps bin bout signals volcs involcs auth 592.76 0.97 1.40 23640 8 0 8272 0 0 307 321 ssl-params 676.93 0.00 0.24 468 0 0 136 0 0 18 10 pop3 6.10 0.24 0.44 672 1 0 1688 8 0 35 40 managesieve 0.71 0.12 0.14 572 5 0 1632 0 0 17 38 managesieve-lo 1023.50 1.45 0.46 6066 1 0 184 0 0 1104 317 imap 0.87 0.80 0.44 674 1 0 640 0 0 18 25 pop3-login 361.79 0.72 0.32 780 0 0 112 0 0 56 11
Date: Mon, 08 Nov 2010 03:00:02 +0100
type real user sys reclaim faults swaps bin bout signals volcs involcs auth 600.71 0.96 1.18 22902 0 0 56 0 0 235 212 ssl-params 242.66 0.00 0.16 471 0 0 136 0 0 15 6 pop3 0.20 0.16 0.28 675 1 0 1312 8 0 32 15 managesieve 0.46 0.00 0.36 580 1 0 480 0 0 11 12 managesieve-lo 286.21 0.60 0.44 1048 1 0 184 0 0 50 88 imap 0.34 0.80 0.28 675 0 0 0 0 0 9 20 pop3-login 361.43 0.84 0.32 780 0 0 112 0 0 55 13
Date: Mon, 08 Nov 2010 04:00:01 +0100
type real user sys reclaim faults swaps bin bout signals volcs involcs auth 587.34 0.90 1.52 22075 14 0 14288 0 0 443 375 ssl-params 275.27 0.00 0.12 469 0 0 136 0 0 14 15 pop3 23.90 0.37 0.80 2906 5 0 36856 24 0 3885 136 managesieve 0.45 0.12 0.16 577 1 0 472 0 0 10 20 managesieve-lo 357.38 0.14 0.52 1271 1 0 184 0 0 100 28 imap 0.42 0.00 0.40 671 0 0 0 0 0 9 56 pop3-login 363.16 0.12 0.64 782 0 0 112 0 0 263 23
Date: Mon, 08 Nov 2010 05:00:01 +0100
type real user sys reclaim faults swaps bin bout signals volcs involcs auth 1005.53 0.91 1.60 21583 0 0 0 0 0 238 92 ssl-params 172.31 0.40 0.80 469 0 0 0 0 0 6 3 pop3 0.11 0.16 0.28 667 0 0 0 8 0 11 18 managesieve 0.42 0.80 0.20 577 0 0 520 0 0 13 4 managesieve-lo 84.84 0.80 0.52 1049 0 0 0 0 0 45 11 imap 0.51 0.12 0.76 664 0 0 0 0 0 10 11 pop3-login 361.78 0.64 0.28 773 0 0 0 0 0 13 2
Date: Mon, 08 Nov 2010 06:00:01 +0100
type real user sys reclaim faults swaps bin bout signals volcs involcs auth 467.35 0.16 0.17 797 0 0 0 0 0 8 9 ssl-params 273.33 0.00 0.16 470 0 0 0 0 0 5 3 pop3 0.14 0.12 0.36 667 0 0 0 8 0 14 1 managesieve 0.20 0.00 0.28 576 0 0 0 0 0 10 1 managesieve-lo 640.83 0.13 0.44 1272 0 0 0 0 0 87 17 imap 0.33 0.40 0.32 665 0 0 0 0 0 10 47 pop3-login 362.87 0.60 0.24 774 0 0 0 0 0 13 3
Date: Mon, 08 Nov 2010 07:00:02 +0100
type real user sys reclaim faults swaps bin bout signals volcs involcs auth 468.95 0.96 1.34 21628 0 0 0 0 0 243 218 ssl-params 83.87 0.00 0.12 469 0 0 0 0 0 7 1 pop3 0.11 0.16 0.24 667 0 0 0 8 0 11 6 managesieve 0.83 0.00 0.88 577 0 0 536 0 0 9 12 managesieve-lo 231.47 0.18 0.96 1381 0 0 0 0 0 106 17 imap 0.71 0.12 0.80 665 0 0 0 0 0 10 47 pop3-login 292.13 0.56 0.28 779 0 0 0 0 0 46 7
Date: Mon, 08 Nov 2010 08:00:02 +0100
type real user sys reclaim faults swaps bin bout signals volcs involcs auth 452.63 0.83 1.44 20188 0 0 16 0 0 286 121 ssl-params 289.68 0.00 0.80 470 0 0 136 0 0 14 6 pop3 1.37 0.80 0.17 681 1 0 1936 16 0 55 28 managesieve 0.24 0.40 0.20 580 0 0 256 0 0 14 5 managesieve-lo 1952.41 4.93 1.58 18647 0 0 8 0 0 3673 1339 imap 0.17 0.40 0.19 665 0 0 0 0 0 6 48 pop3-login 96.75 0.60 0.28 777 0 0 112 0 0 41 14
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