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 no-o
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 写道：
> Hi Mike,
>
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 container_update(
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/ (origina
On Mon, Dec 19, 2011 at 6:21 AM, Rustam Aliyev 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:
> txdf95ad5a10844ee0b74d70d8a76380
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
increasing concurrency （with -c）should boost write performance.
发自我的 iPhone
在 2011-12-16，11:20，Rustam Aliyev 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
> of 4K file
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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