Messages in this thread | | | From | "kcn" <> | Subject | kernel freeze | Date | Tue, 5 Nov 2002 14:18:21 +0800 |
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After I reported a kernel freeze in this mail list("2.4.18 freeze on 4G memory."), I try 2.4.19 & 2.4.19+rmap14a patch, all of those have been frozen. I try to enable kernel profiling to detect what is the problem and found
the function _text_lock_vmscan make the cpu busy. Any comment? The result below: Normal state: # uptime 12:20pm up 2:00, 6 users, load average: 8.18, 10.13, 8.28 # vmstat 2 2 procs memory swap io system cpu r b w swpd free buff cache si so bi bo in cs us sy id 1 0 4 0 182988 408272 1919636 0 0 89 164 853 499 11 9 79 0 1 0 0 184288 408516 1919840 0 0 332 12 4869 2587 20 30 50 # readprofile | sort -g ... 36 _text_lock_vmscan 0.2727 ... 4666 _text_lock_read_write 95.2245 5027 _text_lock_namei 2.8465 5113 ip_packet_match 13.8940 6124 _text_lock_inode 12.6529 6342 prune_icache 11.3250 7549 shrink_cache 8.1347 10010 __constant_memcpy 36.8015 11099 _text_lock_swap 194.7193 1242957 default_idle 15536.9625 1414706 total 1.0008 after freeze: #uptime 12:44pm up 2:25, 6 users, load average: 292.05, 528.62, 117.95 #vmstat 2 2 procs memory swap io system cpu r b w swpd free buff cache si so bi bo in cs us sy id 9 207 4 0 565776 337108 1948476 0 0 77 144 751 433 10 22 68 3 239 1 0 548152 337312 1949624 0 0 718 3666 2256 2789 34 38 27 # readprofile | sort -g ... 21999 _text_lock_swap 385.9474 84239 prune_icache 150.4268 101555 _text_lock_inode 209.8244 122285 shrink_cache 131.7726 173019 _text_lock_vmscan 1310.7500 1311668 default_idle 16395.8500 1992753 total 1.4098
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