Increase max data segment size?
Dear Questions: I have a machine with 2G of ram. I would like to be able to malloc about half of it. However I keep running into the max data segment size limitation: $ ulimit -d 524288 Is there any way to increase or amend this ? I am running FreeBSD 4.9 RELEASE i386 with the following non default kernel options : makeoptions COPTFLAGS=-O2 -pipe -funroll-loops options SMP # Symmetric MultiProcessor Kernel options APIC_IO # Symmetric (APIC) I/O regards Mark ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Increase max data segment size?
I should have mentioned that I built the kernel when the machine had either 512M or 1G of ram, and have subsequently added another 1G. Would rebuilding the kernel result in this limit being recalculated? Mark Kirkwood wrote: Dear Questions: I have a machine with 2G of ram. I would like to be able to malloc about half of it. However I keep running into the max data segment size limitation: $ ulimit -d 524288 ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Increase max data segment size?
Bit sad replying to myself again:-) Anyway - no it does not... still 512M A bit of grepping through the 4.9 source finds that the beast controlling all this is: $ grep MAXDSIZ /usr/src/sys/i386/include/vmparam.h #ifndef MAXDSIZ #define MAXDSIZ (512UL*1024*1024) /* max data size */ so is there any reason *not* to amend this and recompile? e.g. #define MAXDSIZ (1024UL*1024*1024) /* max data size now 1G */ any opinions out there? regards Mark Mark Kirkwood replied to himself: I should have mentioned that I built the kernel when the machine had either 512M or 1G of ram, and have subsequently added another 1G. Would rebuilding the kernel result in this limit being recalculated? ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Increase max data segment size?
Yes there is, some more poking around in /usr/src/sys/kern/subr_param.c brought to light : maxdsiz = MAXDSIZ; TUNABLE_QUAD_FETCH(kern.maxdsiz, maxdsiz); which looked suspicously like a kernel tunable for data segment size. So setting kern.maxdsiz in /etc/loader.conf seems to be the thing to do... Of course by this time I have managed to find some postings concerning MAXDSIZ and kern.maxdsiz. Hopefully the next person confused about this will find my postings *before* dredging the code! regards Mark Mark Kirkwood wrote: so is there any reason *not* to amend this and recompile? e.g. #define MAXDSIZ (1024UL*1024*1024) /* max data size now 1G */ ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Increase max data segment size?
I mean in /boot/loader.conf (growl...) Mark Kirkwood wrote: which looked suspicously like a kernel tunable for data segment size. So setting kern.maxdsiz in /etc/loader.conf seems to be the thing to do... ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
