Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Tiger Server 10.4.11, AFP and SMB performance grinds to a halt.

Posted on 2008-10-08
3
Medium Priority
?
1,125 Views
Last Modified: 2013-11-11
I'm running:
XServe, 2 x 2.66GHz Dual-Core Intel Xeon with 4GB RAM;
System drive is internal SATA RAID1 68GB, 58GB free;
XServe RAID (12 x 750GB, RAID50, 6.82TB single volume) directly attached, PTP, 2GBps;
Services are AFP, NFS, SMB and Open Directory Replica (Kerberised);
Only one share point is defined;
Connected via one built-in Ethernet port to:
1 x Gigabit switch (3com 2948 SFP Plus);
Clients: 8 Mac Pros, running Leopard 10.5.4 and/or XP 32 or VIsta 64, connected via CAT6 tie-lines, with CAT5e patch cables.

At least once a day, I have to reboot the server. AFP winds up to 100% CPU or more, using 203 threads, and the system memory reaches 3.96GB, although 3.13GB of that is inactive. I have caught one instance of SMB doing the same, at the same time as AFP. When this happens, network performance drops from about 70MBps to a few KBps, and all network ports on the server are affected.

So far, I have replaced our original very expensive switches with the one mentioned above;
I performed a clean install of the system;
I tried increasing the Quantum value for WAN to match LAN:
[defaults write -g com.apple.AppleShareClientCore -dict-add afp_wan_quantum -int 131072];
I tested the performance of the XServe RAID locally from the server during one of these slow-downs, and the RAID is performing normally.

The logs are not reporting anything to suggest a problem that may affect network performance that I can see.

Does anyone have any idea where to go from here?


Thanks,

Alan.
0
Comment
Question by:alanmcseveney
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 53

Accepted Solution

by:
strung earned 2000 total points
ID: 22681583
There are a number of suggestions you might try here:  http://discussions.apple.com/thread.jspa?messageID=8245388
0
 
LVL 53

Expert Comment

by:strung
ID: 22681591
0

Featured Post

Simple, centralized multimedia control

Watch and learn to see how ATEN provided an easy and effective way for three jointly-owned pubs to control the 60 televisions located across their three venues utilizing the ATEN Control System, Modular Matrix Switch and HDBaseT extenders.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

We could spend the next millennium discussing the differences of the Mac and Windows platforms. The next century will continue to have fanatics on both side of the equation and neither side will win the war. However, that’s not why we are here. W…
Backups and Disaster RecoveryIn this post, we’ll look at strategies for backups and disaster recovery.
In this video, Percona Director of Solution Engineering Jon Tobin discusses the function and features of Percona Server for MongoDB. How Percona can help Percona can help you determine if Percona Server for MongoDB is the right solution for …
In this video, Percona Solutions Engineer Barrett Chambers discusses some of the basic syntax differences between MySQL and MongoDB. To learn more check out our webinar on MongoDB administration for MySQL DBA: https://www.percona.com/resources/we…

670 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question