Hi All,
After few more days of checks I couldn't resolve it. I think I tried
pretty much everything.
I tend to think that the problem is CentOS/RHEL 5.x and the following error:
Dec 22 05:03:24 ec01 object-server STDOUT: WARNING:root:Unable to
locate fallocate in libc. Leaving as a
Hi Mike,
Thanks, I didn't know that PUT operation also includes updating replica
containers. That makes sense. I will check that.
In the mean time I've added debug checkpoints into PUT operation to
measure different steps. Modified code is here:
http://paste.openstack.org/show/3899/
Yes, the step to update object list in container should be the source, as it
will wait for http connection timeout. From the error log, all connection to
port 6001are failed, so I'd presume the container servers aren't running.
One straight testing is to comment out the call to
Both Metadata.update() and container_update() should apply on all replicas, and
metadata.update() will write xattrs, and container_update() will write to
sqlite db files. Surprisingly to see so long time to update both.
--ywang
发自我的 iPhone
在 2011-12-20，19:13，Rustam Aliyev rus...@code.az 写道：
Hi All,
Right now I tried everything, but PUT speed remains very slow. In order
to speedup I tried various combination of workers, disabled disk mount
check, enabled DEBUG log level, checked source code to understand logic,
finally added another node. No errors, and I was able only to squeeze
On Mon, Dec 19, 2011 at 6:21 AM, Rustam Aliyev rus...@code.az wrote:
The only thing which looks suspicious to me are these errors:
Dec 18 04:01:28 ec01 object-server ERROR container update failed with
10.0.1.3:6001/d01 (saving for async update later): Timeout (3s) (txn:
increasing concurrency （with -c）should boost write performance.
发自我的 iPhone
在 2011-12-16，11:20，Rustam Aliyev rus...@code.az 写道：
Hi,
I'm testing swift 1.4.4 setup with 4 nodes/zones on RHEL 5.7. I ran into the
problem of slow writes. Using swift-bench we generated load, writing hundreds
Hi,
I'm testing swift 1.4.4 setup with 4 nodes/zones on RHEL 5.7. I ran into
the problem of slow writes. Using swift-bench we generated load, writing
hundreds of 4K files. Results:
- Writes - ~3 PUTs/sec (very slow)
- Reads - ~25 GETs/sec (ok)
It's clear that writes are not limited by I/O.
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