|
Problem with memory (unix) allocation to JVM running Java program
I'm attempting to run a very simple Java program on unix box using
command: java -jar HelloWorld.jar and experience the following error Error occurred during initialization of VM Could not reserve enough space for object heap Could not create the Java virtual machine. If I run the "top" and "free" unix commands I can't see why there might be a problem freeing up memory to allocate to the JVM, unless I'm missing something obvious. Any ideas please help. Thanks. See below for "top" and "free" output: top: top - 07:57:22 up 21 days, 14:42, 3 users, load average: 0.16, 0.07, 0.02 Tasks: 46 total, 1 running, 45 sleeping, 0 stopped, 0 zombie Cpu(s): 0.1% us, 0.1% sy, 0.0% ni, 99.8% id, 0.0% wa, 0.0% hi, 0.0% si Mem: 6097220k total, 6081344k used, 15876k free, 12584k buffers Swap: 12586916k total, 6277504k used, 6309412k free, 355436k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1 root 16 0 1628 516 492 S 0 0.0 0:03.66 init 30158 root 15 0 1532 512 444 S 0 0.0 0:08.01 syslogd 30175 root 16 0 4012 796 708 S 0 0.0 0:11.42 sshd 30193 root 18 0 2080 600 596 S 0 0.0 0:00.00 xinetd 30209 root 16 0 3716 296 260 S 0 0.0 0:00.00 vsftpd 30285 root 18 0 2152 896 892 S 0 0.0 0:00.00 mysqld_safe 30331 mysql 16 0 123m 4856 3036 S 0 0.1 1:02.25 mysqld 30508 cyrus 16 0 4424 960 860 S 0 0.0 0:01.50 cyrus- master 30523 cyrus 18 0 29420 1488 1484 S 0 0.0 0:00.00 imapd 30524 cyrus 17 0 29420 1488 1484 S 0 0.0 0:00.00 imapd 30525 cyrus 18 0 29192 1488 1484 S 0 0.0 0:00.00 pop3d 30527 cyrus 18 0 29192 1484 1484 S 0 0.0 0:00.00 pop3d 30533 cyrus 18 0 29420 1488 1484 S 0 0.0 0:00.00 imapd 30535 cyrus 18 0 29192 1488 1484 S 0 0.0 0:00.00 pop3d 30626 root 16 0 5104 1344 1264 S 0 0.0 0:01.01 master 30636 postfix 15 0 5204 1352 1292 S 0 0.0 0:00.11 nqmgr 30645 cyrus 17 0 29420 1488 1484 S 0 0.0 0:00.00 imapd 30646 cyrus 18 0 29420 1488 1484 S 0 0.0 0:00.00 imapd 30647 cyrus 18 0 29420 1488 1484 S 0 0.0 0:00.00 imapd 30648 cyrus 17 0 29192 1488 1484 S 0 0.0 0:00.00 pop3d 30704 root 23 0 296m 39m 4120 S 0 0.7 4:42.30 java 31817 root 16 0 49580 15m 7848 S 0 0.3 0:16.25 httpd 31837 root 16 0 2480 592 544 S 0 0.0 0:00.06 crond 31867 root 18 0 4052 540 536 S 0 0.0 0:00.00 saslauthd 31868 root 18 0 4052 228 224 S 0 0.0 0:00.00 saslauthd 20271 tomcat 17 0 452m 79m 4592 S 0 1.3 11:32.21 java 32765 cyrus 18 0 29328 1652 1648 S 0 0.0 0:00.00 lmtpd 7501 root 16 0 39384 6156 140 S 0 0.1 0:00.00 httpd 7510 apache 15 0 49692 10m 2648 S 0 0.2 0:00.15 httpd 13886 apache 15 0 49724 10m 2676 S 0 0.2 0:00.12 httpd 13908 apache 15 0 49724 10m 2636 S 0 0.2 0:00.15 httpd 11293 root 17 0 6632 1980 1628 S 0 0.0 0:00.01 sshd free: total used free shared buffers cached Mem: 6097220 6081544 15676 0 30924 356504 -/+ buffers/cache: 5694116 403104 Swap: 12586916 6277504 6309412 |
Re: Problem with memory (unix) allocation to JVM running Java program
Dundonald wrote:
> I'm attempting to run a very simple Java program on unix box using > command: > > java -jar HelloWorld.jar > > and experience the following error > > Error occurred during initialization of VM > Could not reserve enough space for object heap > Could not create the Java virtual machine. > > If I run the "top" and "free" unix commands I can't see why there > might be a problem freeing up memory to allocate to the JVM, unless > I'm missing something obvious. Any ideas please help. Thanks. > > See below for "top" and "free" output: > > top: > > top - 07:57:22 up 21 days, 14:42, 3 users, load average: 0.16, 0.07, > 0.02 > Tasks: 46 total, 1 running, 45 sleeping, 0 stopped, 0 zombie > Cpu(s): 0.1% us, 0.1% sy, 0.0% ni, 99.8% id, 0.0% wa, 0.0% hi, > 0.0% si > Mem: 6097220k total, 6081344k used, 15876k free, 12584k > buffers > Swap: 12586916k total, 6277504k used, 6309412k free, 355436k > cached > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ > COMMAND > 1 root 16 0 1628 516 492 S 0 0.0 0:03.66 > init > 30158 root 15 0 1532 512 444 S 0 0.0 0:08.01 > syslogd > 30175 root 16 0 4012 796 708 S 0 0.0 0:11.42 > sshd > 30193 root 18 0 2080 600 596 S 0 0.0 0:00.00 > xinetd > 30209 root 16 0 3716 296 260 S 0 0.0 0:00.00 > vsftpd > 30285 root 18 0 2152 896 892 S 0 0.0 0:00.00 > mysqld_safe > 30331 mysql 16 0 123m 4856 3036 S 0 0.1 1:02.25 > mysqld > 30508 cyrus 16 0 4424 960 860 S 0 0.0 0:01.50 cyrus- > master > 30523 cyrus 18 0 29420 1488 1484 S 0 0.0 0:00.00 > imapd > 30524 cyrus 17 0 29420 1488 1484 S 0 0.0 0:00.00 > imapd > 30525 cyrus 18 0 29192 1488 1484 S 0 0.0 0:00.00 > pop3d > 30527 cyrus 18 0 29192 1484 1484 S 0 0.0 0:00.00 > pop3d > 30533 cyrus 18 0 29420 1488 1484 S 0 0.0 0:00.00 > imapd > 30535 cyrus 18 0 29192 1488 1484 S 0 0.0 0:00.00 > pop3d > 30626 root 16 0 5104 1344 1264 S 0 0.0 0:01.01 > master > 30636 postfix 15 0 5204 1352 1292 S 0 0.0 0:00.11 > nqmgr > 30645 cyrus 17 0 29420 1488 1484 S 0 0.0 0:00.00 > imapd > 30646 cyrus 18 0 29420 1488 1484 S 0 0.0 0:00.00 > imapd > 30647 cyrus 18 0 29420 1488 1484 S 0 0.0 0:00.00 > imapd > 30648 cyrus 17 0 29192 1488 1484 S 0 0.0 0:00.00 > pop3d > 30704 root 23 0 296m 39m 4120 S 0 0.7 4:42.30 > java > 31817 root 16 0 49580 15m 7848 S 0 0.3 0:16.25 > httpd > 31837 root 16 0 2480 592 544 S 0 0.0 0:00.06 > crond > 31867 root 18 0 4052 540 536 S 0 0.0 0:00.00 > saslauthd > 31868 root 18 0 4052 228 224 S 0 0.0 0:00.00 > saslauthd > 20271 tomcat 17 0 452m 79m 4592 S 0 1.3 11:32.21 > java > 32765 cyrus 18 0 29328 1652 1648 S 0 0.0 0:00.00 > lmtpd > 7501 root 16 0 39384 6156 140 S 0 0.1 0:00.00 > httpd > 7510 apache 15 0 49692 10m 2648 S 0 0.2 0:00.15 > httpd > 13886 apache 15 0 49724 10m 2676 S 0 0.2 0:00.12 > httpd > 13908 apache 15 0 49724 10m 2636 S 0 0.2 0:00.15 > httpd > 11293 root 17 0 6632 1980 1628 S 0 0.0 0:00.01 > sshd > > free: > > total used free shared buffers > cached > Mem: 6097220 6081544 15676 0 30924 > 356504 > -/+ buffers/cache: 5694116 403104 > Swap: 12586916 6277504 6309412 > > I've had similar problems in NetBSD when I didn't properly set the memory using ulimit. I don't remember the details, but it basically was set to "unlimited" and that let the JVM think it could allocated infinity :-) Also, try playing with the -X setting (java -X for more help) -- Daniel Pitts' Tech Blog: <http://virtualinfinity.net/wordpress/> |
| All times are GMT. The time now is 05:52 PM. |
Powered by vBulletin®. Copyright ©2000 - 2013, vBulletin Solutions, Inc.
SEO by vBSEO ©2010, Crawlability, Inc.