Date: Tue, 21 Jan 2003 10:41:00 -0500 (EST) From: Jim Weeks <jim@jwweeks.com> To: freebsd-isp@freebsd.org Subject: tuning suggestions? Message-ID: <20030121094638.Q477-100000@veager.jwweeks.com>
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Hi,
Shortly after making world, striping the kernel, upgrading apache,
and installing WebGUI on a couple of websites (WebGUI requires
mod_perl to preload Apache::Registry), I began to get these two
errors.
pmap_collect: collecting pv entries -- suggest increasing
PMAP_SHPGPERPROC microuptime() went backwards (613878.982533 ->
613874.389277)
This machine sees fairly heavy MySql use and moderate httpd load.
It has been faithfully doing its job for a couple of years now from
3.0 - 4.7-stable and has never given a problem. I have read man
tuning, LINT, and searched the archives on these two errors and
really haven't come up with a lot of information. The following
lines from lint are sketchy at best.
-------------------------
# If you're tweaking this, you might also want to increase the
sysctls # "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
# # The value below is the one more than the default. # options
PMAP_SHPGPERPROC=201
-------------------------
Could upping PMAP_SHPGPERPROC by 1 actually be that beneficial?
And, could removing apm from the kernel have caused the microuptime
problem? I am pasting in dmesg system information for reference.
-------------------------
FreeBSD 4.7-STABLE #0: Sun Jan 12 13:26:14 EST 2003
jim@locahost:/usr/obj/usr/src/sys/AURORA_OP
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium II/Pentium II Xeon/Celeron (400.91-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x652 Stepping = 2
Features=0x183fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CM
OV,PAT,PSE36,MMX,FXSR>
real memory = 536805376 (524224K bytes)
avail memory = 519057408 (506892K bytes)
Programming 24 pins in IOAPIC #0
IOAPIC #0 intpin 2 -> irq 0
FreeBSD/SMP: Multiprocessor motherboard
cpu0 (BSP): apic id: 0, version: 0x00040011, at 0xfee00000
cpu1 (AP): apic id: 1, version: 0x00040011, at 0xfee00000
-------------------------
Regards,
--
Jim
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