Hi Morgan, Thanks for your quick response, that makes sense. I have observed that the output of free declined as the following smoothly: !201 $ free -m total used free shared buffers cached Mem: 15925 14423 1501 0 150 9227 -/+ buffers/cache: 5045 10880 Swap: 8189 0 8189
Looks like "free" cmd can not display "used memory" consolidated with top at real-time. *^_^* --- 10年9月20日，周一, Langley, Morgan (GE Capital) <[email protected]> 写道： 发件人: Langley, Morgan (GE Capital) <[email protected]> 主题: Re: [rhelv5-list] mismatch between top and free -m 收件人: "Red Hat Enterprise Linux 5 (Tikanga) discussion mailing-list" <[email protected]> 日期: 2010年9月20日,周一,下午3:58 Hello, I think both are showing the correct values… what exactly seems off to you? You have got some cca 85 MB really „free“ memory and the 8352 MB is FREE + BUFFERS + CACHE – because the OS can drop caches/buffers and make more free memory. The rest is really being used by processes. Hope this helps a bit, Morgan From: [email protected] [mailto:[email protected]] On Behalf Of raid fifa Sent: Monday, September 20, 2010 9:35 AM To: [email protected] Subject: [rhelv5-list] mismatch between top and free -m Hi guys, I have a RHEL5(2.6.18-92.1.1.el5 x86_64 ) system, found there is big gap(8352MB vs ~5GB) between the output of top and free , like the following: !179 $ free -m total used free shared buffers cached Mem: 15925 15837 88 0 76 7408 -/+ buffers/cache: 8352 7573 Swap: 8189 0 8189 top - 03:34:23 up 29 days, 6:15, 5 users, load average: 3.92, 3.72, 2.70 Tasks: 172 total, 1 running, 171 sleeping, 0 stopped, 0 zombie Cpu(s): 23.2%us, 3.1%sy, 0.0%ni, 63.4%id, 9.7%wa, 0.0%hi, 0.6%si, 0.0%st Mem: 16307832k total, 16222676k used, 85156k free, 78732k buffers Swap: 8385920k total, 148k used, 8385772k free, 8372932k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 30311 ads 18 0 9801m 4.9g 121m S 207 31.6 30:32.64 ads 3414 root 15 0 158m 10m 3276 S 1 0.1 9:51.47 snmpd 15339 ntp 15 0 23752 5388 4272 S 0 0.0 0:01.56 ntpd 30309 ads 19 0 70064 4636 2228 S 0 0.0 0:00.01 python 4090 root 18 0 141m 3916 2464 S 0 0.0 0:13.39 cmanicd 4678 haldaemo 15 0 29524 3876 1284 S 0 0.0 0:01.11 hald 3129 root RT 0 21976 3564 2732 S 0 0.0 0:00.00 multipathd 7404 root 16 0 89240 3220 2512 S 0 0.0 0:00.01 sshd 5423 root 16 0 88344 3216 2512 S 0 0.0 0:00.01 sshd 26348 root 17 0 88348 3216 2512 S 0 0.0 0:00.01 sshd 1156 root 16 0 88348 3212 2512 S 0 0.0 0:00.02 sshd 1971 root 17 0 88348 3212 2512 S 0 0.0 0:00.00 sshd 1857 eng 15 0 94216 3116 1948 S 0 0.0 0:00.06 vim 29121 ads 15 0 94192 3084 1936 S 0 0.0 0:00.02 vim 3977 root 18 0 4872 2592 1876 S 0 0.0 3:39.29 cmaidad 3987 root 15 0 14956 2568 1960 S 0 0.0 0:00.11 cmafcad 15304 root 15 0 67064 2312 796 S 0 0.0 0:00.15 sendmail 3963 root 18 0 4480 2264 1720 S 0 0.0 0:02.16 cmaeventd 15312 smmsp 15 0 57820 1768 640 S 0 0.0 0:00.01 sendmail 7406 eng 15 0 89240 1752 1028 S 0 0.0 0:00.63 sshd 5425 eng 16 0 88344 1728 1020 S 0 0.0 0:00.01 sshd .... .... any advice ? thanks. *^_^* -----下面为附件内容----- _______________________________________________ rhelv5-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/rhelv5-list
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