Date: Fri, 8 Jan 1999 18:10:01 -0800 (PST) From: Jin Guojun (FTG staff) <jin@george.lbl.gov> To: freebsd-bugs@FreeBSD.ORG Subject: Re: kern/9399: If all memory fills up (VM and Real), nothing will run even if apps are closed to free up ram. Shutdown will not always work, and kernel reboot is common without a message. Message-ID: <199901090210.SAA12671@freefall.freebsd.org>
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The following reply was made to PR kern/9399; it has been noted by GNATS. From: Jin Guojun (FTG staff) <jin@george.lbl.gov> To: bellcanada@hotmail.com, freebsd-gnats-submit@FreeBSD.ORG Cc: Subject: Re: kern/9399: If all memory fills up (VM and Real), nothing will run even if apps are closed to free up ram. Shutdown will not always work, and kernel reboot is common without a message. Date: Fri, 8 Jan 1999 18:02:51 -0800 (PST) This is not a bug if you had swap smaller than the real memory. look this: last pid: 1170; load averages: 0.28, 0.30, 0.25 17:51:58 39 processes: 3 running, 36 sleeping CPU states: 0.4% user, 0.0% nice, 0.4% system, 0.8% interrupt, 98.4% idle Mem: 37M Active, 6080K Inact, 14M Wired, 10M Cache, 8349K Buf, 26M Free Swap: 219M Total, 128K Used, 218M Free PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND 418 jin 2 0 8284K 8120K select 4:57 1.79% 1.79% netscape 378 jin 2 0 4340K 7908K select 2:20 1.18% 1.18% XF86_S3 If you have 5 MB swap, how can you swap out any of above processes to start a new process :-) Generally, you should have at least 1.5 times the real memory for your swap. 2.5 times of the real memory size swap is recommended. -Jin > I originaly started with 20Megs of Ram, and a 5M swap. The resason for the smal > l swap is because of drive space limitations. Even thought the docs say 8M will > work, that is not the case. If the machine uses up all the ram and swap, it ba > sicly hangs. You can type, and it is responsive, but you cannot run anything, n > ot even ls. All fail with an error message like : Cannot malloc - out of memmor > y .... or somthing like that. > > I did notice thought after increasing my swap from 5 to 15M, the machine still d > idn't do anything after running out of ram, but it did recover EVENTUALLY after > closing everything (down to just a standard outside of X prompt). > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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