I have two DELL 2450 Server's, each with 2 1Ghz Processors, 2GB of RAM, and two pairs of 36GB mirrored drives on a PErc 3/si RAID Controller running RH 7.1 with a SMP Kernel Question: Will I really get any additional performance from the extra processor using SYSLOG-NG? Thanks!! Christopher Leonardos Security Engineer Interliant Inc. 12 Gill Street Woburn, MA 01801 781-756-3761 781-756-3737 FAX christopher_leonardos@interliant.com
On Wed, Sep 05, 2001 at 03:15:22PM -0400, Christopher_Leonardos@triumph.com wrote:
I have two DELL 2450 Server's, each with 2 1Ghz Processors, 2GB of RAM, and two pairs of 36GB mirrored drives on a PErc 3/si RAID Controller running RH 7.1 with a SMP Kernel
Question: Will I really get any additional performance from the extra processor using SYSLOG-NG?
If you think it's about "performance", you're probably looking to save in the wrong areas. syslog-ng is a robust, highly configurable syslog replacement for those who don't get along with stock syslogd's. -- jamie rishaw <jamie@playboy.com> sr. wan/unix engineer/ninja // playboy enterprises inc. [opinions stated are mine, and are not necessarily those of the bunny] "UNIX was not designed to stop people from doing stupid things, because that would also stop them from doing clever things." -- Doug Gwyn
On Wed, Sep 05, 2001 at 03:15:22PM -0400, Christopher_Leonardos@triumph.com wrote:
I have two DELL 2450 Server's, each with 2 1Ghz Processors, 2GB of RAM, and two pairs of 36GB mirrored drives on a PErc 3/si RAID Controller running RH 7.1 with a SMP Kernel
Question: Will I really get any additional performance from the extra processor using SYSLOG-NG?
Logging doesn't involve a whole lot of computing. It's all I/O (network and disk.) SMP only helps when forking or threading. -- -Jeremy
On Wed, Sep 05, 2001 at 03:14:04PM -0500, Jeremy Shaffner wrote:
On Wed, Sep 05, 2001 at 03:15:22PM -0400, Christopher_Leonardos@triumph.com wrote:
I have two DELL 2450 Server's, each with 2 1Ghz Processors, 2GB of RAM, and two pairs of 36GB mirrored drives on a PErc 3/si RAID Controller running RH 7.1 with a SMP Kernel
Question: Will I really get any additional performance from the extra processor using SYSLOG-NG?
Logging doesn't involve a whole lot of computing. It's all I/O (network and disk.)
SMP only helps when forking or threading.
syslog-ng uses a single thread and non-blocking i/o, adding additional processors if the box doesn't do anything else is wasted. -- Bazsi PGP info: KeyID 9AF8D0A9 Fingerprint CD27 CFB0 802C 0944 9CFD 804E C82C 8EB1
--On Wednesday, September 05, 2001 10:34 PM +0200 Balazs Scheidler <bazsi@balabit.hu> wrote:
syslog-ng uses a single thread and non-blocking i/o, adding additional processors if the box doesn't do anything else is wasted.
Maybe. It all depends on your kernel. I can state with some authority that it would _not_ be wasted under Solaris 8, if you had high volumes of data. Having an additional CPU for the kernel to do network and disk I/O frees up a lot of CPU time for syslog-ng to do its thing. Now, adding a 3rd or 4th CPU may or may not improve things, but 2 is a good idea. But Linux SMP isn't very good, so your milage may vary. -- Carson Gaspar - carson@taltos.org Queen Trapped in a Butch Body
participants (5)
-
Balazs Scheidler
-
Carson Gaspar
-
Christopher_Leonardos＠triumph.com
-
jamie rishaw
-
Jeremy Shaffner