9.3.x performance issues

Tue Apr 12 18:36:47 UTC 2005

>
> Profiles might be one thing.
>
> rick jones

If this is not what you're requesting, let me know so I can supply the 
desired info.

options {
       directory "/";
       listen-on { 127.0.0.1; 207.5.128.9; 192.168.2.9; };
       pid-file "run/named.pid";
       max-cache-size 900M;
       recursive-clients 10000;
       cleaning-interval 120;
       allow-transfer { bunch of internal local caches and external 
slaves };
       also-notify { 192.168.2.10; };
};

Master for 2500 zones, approx 25,000 individual records
Slave for 250 zones

6500 querries per second average, directly serving /16 of customer access 
space in addition to being master for 2500 zones.

The box is on a dual 2.4ghz Xeon box running FreeBSD 4.11.  1.5gb of ram, 
box is dedicated to running bind.

Typical querry response time is low enough that my scripts can't measure it 
reliably.  (perl hacks).  When the problem set shows up, querries can take 
up to 10 seconds to return a result, while some will come back with no host 
for the entry querried.  The problem usually lasts for approximately 15 
seconds.

Raw CPU utilization:
Tue Apr 12 14:30:47 EDT 2005
293M 8.64% 8.64%
Tue Apr 12 14:30:48 EDT 2005
293M 8.54% 8.54%
Tue Apr 12 14:30:49 EDT 2005
293M 8.64% 8.64%
Tue Apr 12 14:30:51 EDT 2005
293M 8.98% 8.98%
Tue Apr 12 14:30:52 EDT 2005
293M 9.03% 9.03%
Tue Apr 12 14:30:53 EDT 2005
293M 8.98% 8.98%
Tue Apr 12 14:30:55 EDT 2005
293M 8.89% 8.89%
Tue Apr 12 14:30:56 EDT 2005
293M 8.84% 8.84%
Tue Apr 12 14:30:58 EDT 2005
293M 8.74% 8.74%
Tue Apr 12 14:30:59 EDT 2005
293M 8.69% 8.69%
Tue Apr 12 14:31:00 EDT 2005
293M 8.74% 8.74%
Tue Apr 12 14:31:02 EDT 2005
293M 8.59% 8.59%
Tue Apr 12 14:31:03 EDT 2005
293M 8.64% 8.64%
Tue Apr 12 14:31:05 EDT 2005
293M 8.45% 8.45%
Tue Apr 12 14:31:06 EDT 2005
293M 8.40% 8.40%
Tue Apr 12 14:31:07 EDT 2005
293M 8.35% 8.35%
Tue Apr 12 14:31:09 EDT 2005
293M 8.35% 8.35%
Tue Apr 12 14:31:10 EDT 2005
293M 8.11% 8.11%
Tue Apr 12 14:31:11 EDT 2005
293M 8.01% 8.01%
Tue Apr 12 14:31:13 EDT 2005
293M 8.11% 8.11%
Tue Apr 12 14:31:14 EDT 2005
293M 8.06% 8.06%
Tue Apr 12 14:31:15 EDT 2005
293M 7.91% 7.91%
Tue Apr 12 14:31:17 EDT 2005
293M 7.71% 7.71%
Tue Apr 12 14:31:18 EDT 2005
293M 7.67% 7.67%
Tue Apr 12 14:31:20 EDT 2005
293M 11.77% 11.77%
Tue Apr 12 14:31:23 EDT 2005
293M 18.21% 18.21%
Tue Apr 12 14:31:24 EDT 2005
293M 21.92% 21.92%
Tue Apr 12 14:31:26 EDT 2005
293M 27.15% 27.15%
Tue Apr 12 14:31:28 EDT 2005
293M 31.59% 31.59%
Tue Apr 12 14:31:29 EDT 2005
293M 34.72% 34.72%
Tue Apr 12 14:31:31 EDT 2005
293M 38.72% 38.72%
Tue Apr 12 14:31:32 EDT 2005
293M 40.62% 40.62%
Tue Apr 12 14:31:34 EDT 2005
293M 44.38% 44.38%
Tue Apr 12 14:31:35 EDT 2005
293M 45.46% 45.46%
Tue Apr 12 14:31:37 EDT 2005
293M 48.83% 48.83%
Tue Apr 12 14:31:38 EDT 2005
293M 49.76% 49.76%
Tue Apr 12 14:31:40 EDT 2005
293M 52.78% 52.78%
Tue Apr 12 14:31:42 EDT 2005
293M 54.25% 54.25%
Tue Apr 12 14:31:43 EDT 2005
293M 56.10% 56.10%
Tue Apr 12 14:31:44 EDT 2005
293M 55.76% 55.76%
Tue Apr 12 14:31:46 EDT 2005
293M 57.91% 57.91%
Tue Apr 12 14:31:47 EDT 2005
293M 58.74% 58.74%
Tue Apr 12 14:31:49 EDT 2005
293M 60.30% 60.30%
Tue Apr 12 14:31:50 EDT 2005
293M 61.18% 61.18%
Tue Apr 12 14:31:51 EDT 2005
293M 61.62% 61.62%
Tue Apr 12 14:31:53 EDT 2005
293M 63.43% 63.43%
Tue Apr 12 14:31:54 EDT 2005
293M 63.53% 63.53%
Tue Apr 12 14:31:56 EDT 2005
293M 64.45% 64.45%
Tue Apr 12 14:31:57 EDT 2005
293M 65.43% 65.43%
Tue Apr 12 14:31:59 EDT 2005
293M 65.77% 65.77%
Tue Apr 12 14:32:00 EDT 2005
293M 65.14% 65.14%
Tue Apr 12 14:32:02 EDT 2005
293M 59.96% 59.96%
Tue Apr 12 14:32:03 EDT 2005
293M 57.32% 57.32%
Tue Apr 12 14:32:04 EDT 2005
293M 54.64% 54.64%
Tue Apr 12 14:32:06 EDT 2005
293M 49.85% 49.85%
Tue Apr 12 14:32:07 EDT 2005
293M 47.90% 47.90%
Tue Apr 12 14:32:08 EDT 2005
293M 45.90% 45.90%
Tue Apr 12 14:32:10 EDT 2005
293M 42.09% 42.09%
Tue Apr 12 14:32:11 EDT 2005
293M 40.48% 40.48%
Tue Apr 12 14:32:13 EDT 2005
293M 37.55% 37.55%
Tue Apr 12 14:32:14 EDT 2005
293M 35.94% 35.94%
Tue Apr 12 14:32:15 EDT 2005
293M 33.30% 33.30%
Tue Apr 12 14:32:17 EDT 2005
293M 32.13% 32.13%
Tue Apr 12 14:32:18 EDT 2005
293M 31.05% 31.05%
Tue Apr 12 14:32:20 EDT 2005
293M 28.81% 28.81%
Tue Apr 12 14:32:21 EDT 2005
293M 27.73% 27.73%
Tue Apr 12 14:32:22 EDT 2005
293M 26.76% 26.76%
Tue Apr 12 14:32:24 EDT 2005
293M 24.71% 24.71%
Tue Apr 12 14:32:25 EDT 2005
293M 23.93% 23.93%
Tue Apr 12 14:32:26 EDT 2005
293M 22.56% 22.56%
Tue Apr 12 14:32:28 EDT 2005
293M 21.78% 21.78%
Tue Apr 12 14:32:29 EDT 2005
293M 21.00% 21.00%
Tue Apr 12 14:32:31 EDT 2005
293M 19.34% 19.34%
Tue Apr 12 14:32:32 EDT 2005
293M 18.60% 18.60%
Tue Apr 12 14:32:33 EDT 2005
293M 17.92% 17.92%
Tue Apr 12 14:32:35 EDT 2005
293M 17.14% 17.14%
Tue Apr 12 14:32:36 EDT 2005
293M 16.65% 16.65%
Tue Apr 12 14:32:37 EDT 2005
293M 15.87% 15.87%
Tue Apr 12 14:32:39 EDT 2005
293M 15.48% 15.48%
Tue Apr 12 14:32:40 EDT 2005
293M 15.09% 15.09%
Tue Apr 12 14:32:42 EDT 2005
293M 14.50% 14.50%
Tue Apr 12 14:32:43 EDT 2005
293M 14.06% 14.06%
Tue Apr 12 14:32:44 EDT 2005
293M 13.82% 13.82%
Tue Apr 12 14:32:46 EDT 2005
293M 13.48% 13.48%
Tue Apr 12 14:32:47 EDT 2005
293M 12.99% 12.99%
Tue Apr 12 14:32:48 EDT 2005
293M 12.60% 12.60%
Tue Apr 12 14:32:50 EDT 2005
293M 12.11% 12.11%
Tue Apr 12 14:32:51 EDT 2005
293M 11.91% 11.91%
Tue Apr 12 14:32:53 EDT 2005
293M 11.47% 11.47%
Tue Apr 12 14:32:54 EDT 2005
293M 11.28% 11.28%
Tue Apr 12 14:32:55 EDT 2005
293M 11.23% 11.23%
Tue Apr 12 14:32:57 EDT 2005
293M 10.64% 10.64%
Tue Apr 12 14:32:58 EDT 2005
293M 10.60% 10.60%
Tue Apr 12 14:32:59 EDT 2005
293M 10.25% 10.25%
Tue Apr 12 14:33:01 EDT 2005
293M 10.06% 10.06%
Tue Apr 12 14:33:02 EDT 2005
293M 9.81% 9.81%
Tue Apr 12 14:33:04 EDT 2005
293M 9.62% 9.62%
Tue Apr 12 14:33:05 EDT 2005
293M 9.33% 9.33%
Tue Apr 12 14:33:06 EDT 2005
293M 9.13% 9.13%
Tue Apr 12 14:33:08 EDT 2005
293M 8.94% 8.94%
Tue Apr 12 14:33:09 EDT 2005
293M 8.98% 8.98%
Tue Apr 12 14:33:10 EDT 2005
293M 8.69% 8.69%
Tue Apr 12 14:33:12 EDT 2005
293M 8.79% 8.79%
Tue Apr 12 14:33:13 EDT 2005
293M 8.69% 8.69%