On Wed, 11 Apr 2012, m.roth at 5-cent.us wrote: > Steve Thompson wrote: >> On Wed, 11 Apr 2012, m.roth at 5-cent.us wrote: >> >>> Been seeing that on 6.2, also, though I've not noticed them locking up >>> (the ones that have were in a cluster, and someone could have hosed >>> memory). It got less with the latest kernel, but I'm still seeing them >>> occasionally. >> >> This is most likely a problem due to data arriving too quickly for the VM >> subsystem to flush dirty pages to disk to keep up; the kernel switches to >> synchronous mode when the dirty_ratio percentage of memory pages is used. >> You might try upping your dirty_ratio, or reducing it drastically. >> > But mine are *not* VMs. VM = Virtual Memory.