high system usage with kmail in 2.5.7X

Sergey S. Kostyliov (rathamahata@php4.ru)
Thu, 3 Jul 2003 16:37:46 +0400

Hello all,

I experienced an abnormally high system usage whith kmail
(KDE mail client). This is usually happened when I click on a
huge mail folder. Then kmail just stops responding for a dozens of seconds.

Seems like problem started around 2.5.70 (2.5.69 doesn't compile on my box,
2.5.68 works fine for me).

I understood that this problem can be related to kmail itself, but a high
system usage during this seems strange for me. Any hints are welcome.

Kernel version is 2.5.74. Filesystem is reiserfs.

rathamahata@arise rathamahata $ vmstat 1
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
1 0 40 3232 3516 52832 0 0 294 29 1111 1091 38 27 22 13
1 0 40 3192 3516 52832 0 0 0 0 1009 185 18 82 0 0
1 0 40 3192 3516 52832 0 0 0 0 1013 171 18 82 0 0
1 0 40 4112 3308 52132 0 0 0 560 1017 171 15 85 0 0
1 0 40 4152 3308 52132 0 0 0 0 1008 128 16 84 0 0
1 0 40 4152 3308 52132 0 0 0 0 1014 175 16 84 0 0
1 0 40 4152 3308 52132 0 0 0 0 1018 168 15 85 0 0
1 0 40 4144 3308 52132 0 0 0 0 1019 162 17 83 0 0
5 0 40 4176 3308 52132 0 0 0 0 1450 1023 26 74 0 0
2 0 40 4104 3316 52264 0 0 0 0 1115 617 21 79 0 0
1 0 40 4088 3324 52264 0 0 0 0 1013 620 29 71 0 0
1 0 40 4088 3324 52264 0 0 0 0 1012 189 17 83 0 0
1 0 40 4088 3324 52264 0 0 0 0 1020 148 14 86 0 0
1 0 40 4008 3392 52264 0 0 0 260 1042 158 15 85 0 0
1 0 40 4008 3392 52264 0 0 0 0 1011 158 16 84 0 0
1 0 40 4008 3392 52264 0 0 0 0 1036 155 14 86 0 0
1 0 40 3904 3392 52392 0 0 0 0 1007 132 15 85 0 0
1 0 40 3904 3392 52392 0 0 0 0 1004 131 15 85 0 0
1 0 40 3904 3420 52392 0 0 0 48 1017 161 17 83 0 0
0 1 40 3984 3440 52516 0 0 92 0 1019 660 71 22 0 7
0 0 40 3744 3468 52792 0 0 300 0 1033 236 30 2 55 13
0 0 40 3744 3468 52792 0 0 0 0 1003 168 5 0 95 0

The part of kmail strace at that time:

read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072
_llseek(22, 2228224, [2228224], SEEK_SET) = 0
read(22, "\0\t\0\0\0\4\0]\23\0\0\7\0\0\0\4\0>\314F\1\n\0\0\0\4\0"..., 131072)
= 99711
_llseek(22, 1703936, [1703936], SEEK_SET) = 0
read(22, "\0\0\0\4\0\216\f\0\0\7\0\0\0\4\0\r\211\350\0\n\0\0\0\4"..., 131072)
= 131072

-- 
                   Best regards,
                   Sergey S. Kostyliov <rathamahata@php4.ru>
                   Public PGP key: http://sysadminday.org.ru/rathamahata.asc
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